manualshive.com logo in svg

Cisco 2950 - Catalyst Switch, Руководство по установке оборудования

Cisco 2950 - Catalyst Switch - продукт сетевого оборудования для управления сетью. На нашем сайте вы можете бесплатно скачать руководство по настройке manualshive.com, чтобы настроить и оптимизировать свою сеть с помощью этого устройства.

Поделиться
Скачать
background image

 

4-5

Catalyst 2950 Desktop Switch Hardware Installation Guide

78-11157-05

Chapter 4      Troubleshooting

Diagnosing Problems

System LED is amber.

•

Internal fan fault detected.

•

Check if the fan has failed 
by using the show env fan 
privileged EXEC command.

If the fan has failed, call 
Cisco Systems.

•

Nonfatal or fatal POST error 
detected.

•

Use the show post 
privileged EXEC command 
to see which POST test 
failed.

Switch placed in 
error-disabled state after 
CWDM

5

 GBIC or SFP 

module is inserted.

Bad or non-Cisco-approved CWDM 
GBIC module or SFP module.

Remove the CWDM GBIC or 
SFP module from the switch, 
and replace it with a 
Cisco-approved module. Use the 
errdisable recovery cause 
gbic-invalid global 
configuration command to 
verify port status, and enter a 
time interval to recover from the 
error-disabled state.

Refer to the switch software 
configuration guide for 
information about the 
errdisable recovery command.

Table 4-1

Common Problems and Solutions (continued)

Symptom

Possible Cause

Resolution

Содержание 2950 - Catalyst Switch

Страница 1: ... West Tasman Drive San Jose CA 95134 1706 USA http www cisco com Tel 408 526 4000 800 553 NETS 6387 Fax 408 526 4100 Catalyst 2950 Desktop Switch Hardware Installation Guide May 2003 Customer Order Number DOC 7811157 Text Part Number 78 11157 05 ...

Страница 2: ...difying the equipment without Cisco s written authorization may result in the equipment no longer complying with FCC requirements for Class A or Class B digital devices In that event your right to use the equipment may be limited by FCC regulations and you may be required to correct any interference to radio or television communications at your own expense You can determine whether your equipment ...

Страница 3: ...mpowering the Internet Generation Enterprise Solver EtherChannel EtherSwitch Fast Step GigaStack Internet Quotient IOS IP TV iQ Expertise the iQ logo iQ Net Readiness Scorecard LightStream MGX MICA the Networkers logo Networking Academy Network Registrar Packet PIX Post Routing Pre Routing RateMUX Registrar ScriptShare SlideCast SMARTnet StrataView Plus Stratm SwitchProbe TeleRouter The Fastest Wa...

Страница 4: ......

Страница 5: ...umentation CD ROM xxvi Ordering Documentation xxvi Documentation Feedback xxvi Obtaining Technical Assistance xxvii Cisco com xxvii Technical Assistance Center xxviii Cisco TAC Website xxviii Cisco TAC Escalation Center xxix Obtaining Additional Publications and Information xxix C H A P T E R 1 Quick Installation 1 1 Taking Out What You Need 1 2 Connecting to the Console Port 1 3 Starting the Term...

Страница 6: ...er Support 1 12 Guidelines for Installing and Enabling the Java Plug In 1 13 Installing the Required Java Plug In 1 14 C H A P T E R 2 Overview 2 1 Features 2 1 Front Panel Description 2 4 10 100 Ports 2 9 10 100 1000 Ports 2 10 100BASE FX and 1000BASE SX Ports 2 11 LRE Port 2 12 GBIC Module Ports 2 13 SFP Module Slots 2 14 SFP Modules 2 15 LEDs 2 17 System LED 2 20 RPS LED 2 21 Port Mode and Port...

Страница 7: ...nstalling the Switch in a Rack 3 10 Attaching the Brackets to the Switch 3 11 Mounting the Switch in a Rack 3 21 Attaching the Optional Cable Guide 3 22 Installing the Switch on a Table Shelf or Desk 3 22 Installing the Switch on a Wall 3 23 Attaching the Brackets to the Switch 3 23 Attaching the RPS Connector Cover 3 24 Mounting the Switch to a Wall 3 25 Installing the GBIC Modules 3 26 Installin...

Страница 8: ... Connecting to 1000BASE T GBIC Module Ports 3 47 Connecting to GigaStack GBIC Module Ports 3 48 Connecting to an SFP Module 3 49 Where to Go Next 3 50 C H A P T E R 4 Troubleshooting 4 1 Understanding POST Results 4 2 Diagnosing Problems 4 2 A P P E N D I X A Technical Specifications A 1 A P P E N D I X B Connectors and Cables B 1 Connector Specifications B 1 10 100 Ports B 2 10 100 1000 Ports B 3...

Страница 9: ... Identifying a Rollover Cable B 14 Adapter Pinouts B 15 A P P E N D I X C Connecting to DC Power C 1 Preparing for Installation C 2 Grounding the Switch C 2 Wiring the DC Input Power Source C 5 A P P E N D I X D Translated Safety Warnings D 1 Attaching the Cisco RPS model PWR300 AC RPS N1 D 1 Attaching the Cisco RPS model PWR675 AC RPS N1 D 2 Lightning Activity Warning D 4 Installation Warning D 5...

Страница 10: ...ply Connection Warning D 25 Installation Warning D 26 Class 1 Laser Product Warning D 27 Laser Beam Exposure Warning D 29 Laser Radiation Warning D 30 Catalyst 2950G 24 EI DC Service Requirement D 31 Catalyst 2950ST 24 LRE 997 Service Requirement D 34 Restricted Area Warning D 36 Ethernet Cable Shielding in Offices D 38 Chassis Power Connection D 39 Exposed DC Power Wire Warning D 42 Service Perso...

Страница 11: ...trans htm The Warranties and License Agreements page appears 2 To read the Cisco Information Packet follow these steps a Click the Information Packet Number field and make sure that the part number 78 5235 02F0 is highlighted b Select the language in which you would like to read the document c Click Go The Cisco Limited Warranty and Software License page from the Information Packet appears d Read ...

Страница 12: ...upported for as long as the original end user continues to own or use the product provided that the fan and power supply warranty is limited to five 5 years In the event of a discontinuance of product manufacture the Cisco warranty support is limited to five 5 years from the announcement of the discontinuance Replacement Repair or Refund Policy for Hardware Cisco or its service center will use com...

Страница 13: ...tion Guide 78 11157 05 Cisco Limited Lifetime Hardware Warranty Terms Complete the information below and keep it for reference Company product purchased from Company telephone number Product model number Product serial number Maintenance contract number ...

Страница 14: ...Cisco Limited Lifetime Hardware Warranty Terms xiv Catalyst 2950 Desktop Switch Hardware Installation Guide 78 11157 05 ...

Страница 15: ...950 switch It describes the physical and performance characteristics of the switch explains how to install a switch and provides troubleshooting information and specifications This guide does not describe how to configure software features on your switch or describe the Catalyst 2950 specific system messages that you might encounter It also does not provide information about command line interface...

Страница 16: ...races group required choices and vertical bars separate the alternative elements Braces and vertical bars within square brackets mean a required choice within an optional element Notes cautions and warnings use these conventions and symbols Note Means reader take note Notes contain helpful suggestions or references to materials not contained in this manual Caution Means reader be careful In this s...

Страница 17: ...uide or other enclosed additional documentation for further details Waarschuwing BELANGRIJKE VEILIGHEIDSINSTRUCTIES Dit waarschuwingssymbool betekent gevaar U verkeert in een situatie die lichamelijk letsel kan veroorzaken Voordat u aan enige apparatuur gaat werken dient u zich bewust te zijn van de bij elektrische schakelingen betrokken risico s en dient u op de hoogte te zijn van de standaard pr...

Страница 18: ...sta mukana toimitetuista asiakirjoista Attention IMPORTANTES INFORMATIONS DE SÉCURITÉ Ce symbole d avertissement indique un danger Vous vous trouvez dans une situation pouvant causer des blessures ou des dommages corporels Avant de travailler sur un équipement soyez conscient des dangers posés par les circuits électriques et familiarisez vous avec les procédures couramment utilisées pour éviter le...

Страница 19: ...h für Ihr Gerät bestimmt das dem Gerät beiliegt Entnehmen Sie bitte alle weiteren Informationen dem Handbuch Installations oder Konfigurationshandbuch o Ä für Ihr spezifisches Gerät Figyelem FONTOS BIZTONSÁGI ELÕÍRÁSOK Ez a figyelmezetõ jel veszélyre utal Sérülésveszélyt rejtõ helyzetben van Mielõtt bármely berendezésen munkát végezte legyen figyelemmel az elektromos áramkörök okozta kockázatokra ...

Страница 20: ...azione specifica spedita con il prodotto Per maggiori informazioni consultare la Guida all installazione la Guida alla configurazione o altra documentazione acclusa Advarsel VIKTIGE SIKKERHETSINSTRUKSJONER Dette varselssymbolet betyr fare Du befinner deg i en situasjon som kan forårsake personskade Før du utfører arbeid med utstyret bør du være oppmerksom på farene som er forbundet med elektriske ...

Страница 21: ...na se a ser utilizada em conjunto com o manual de instalação incluído com o produto específico Consulte o manual de instalação o manual de configuração ou outra documentação adicional inclusa para obter mais informações Advertencia INSTRUCCIONES IMPORTANTES DE SEGURIDAD Este símbolo de aviso indica peligro Existe riesgo para su integridad física Antes de manipular cualquier equipo considere los ri...

Страница 22: ... om farorna med elkretsar och känna till vanliga förfaranden för att förebygga olyckor Se översättningarna av de varningsmeddelanden som finns i denna publikation och se de översatta säkerhetsvarningarna som medföljer denna anordning OBS SPARA DESSA ANVISNINGAR OBS Denna dokumentation ska användas i samband med den specifika produktinstallationshandbok som medföljde produkten Se installationshandb...

Страница 23: ... com univercd cc td doc product lan cat2950 index htm You can order printed copies of documents with a DOC xxxxxx number from the Cisco com sites and from the telephone numbers listed in the Ordering Documentation section on page xxvi Release Notes for the Catalyst 2950 and Catalyst 2955 Switches not orderable but is available on Cisco com Release Notes for the Catalyst 2950 LRE Switches not order...

Страница 24: ...r DOC 7811381 Catalyst 2950 and Catalyst 2955 Switch System Message Guide order number DOC 7814233 For information about the Catalyst 2950 Long Reach Ethernet LRE switches refer to these documents Catalyst 2950 Desktop Switch Software Configuration Guide order number DOC 7814982 Catalyst 2950 Desktop Switch Command Reference order number DOC 7814984 Catalyst 2950 Desktop Switch System Message Guid...

Страница 25: ...ber DOC 7815160 Installation and Warranty Notes for the Cisco LRE 48 POTS Splitter order number DOC 7812250 Installation Notes for Wall Mount Brackets order number DOC 7813035 Obtaining Documentation Cisco provides several ways to obtain documentation technical assistance and other technical resources These sections explain how to obtain technical information from Cisco Systems Cisco com You can a...

Страница 26: ... URL http www cisco com univercd cc td doc es_inpck pdi htm You can order Cisco documentation in these ways Registered Cisco com users Cisco direct customers can order Cisco product documentation from the Networking Products MarketPlace http www cisco com en US partner ordering index shtml Registered Cisco com users can order the Documentation CD ROM Customer Order Number DOC CONDOCCD through the ...

Страница 27: ...onfigurations from the Cisco TAC website Cisco com registered users have complete access to the technical support resources on the Cisco TAC website including TAC tools and utilities Cisco com Cisco com offers a suite of interactive networked services that let you access Cisco information networking solutions services programs and resources at any time from anywhere in the world Cisco com provides...

Страница 28: ...ecting significant aspects of business operations No workaround is available Priority level 1 P1 Your production network is down and a critical impact to business operations will occur if service is not restored quickly No workaround is available Cisco TAC Website You can use the Cisco TAC website to resolve P3 and P4 issues yourself saving both cost and time The site provides around the clock acc...

Страница 29: ...er to determine the level of Cisco support services to which your company is entitled for example SMARTnet SMARTnet Onsite or Network Supported Accounts NSA When you call the center please have available your service agreement number and your product serial number Obtaining Additional Publications and Information Information about Cisco products technologies and network solutions is available from...

Страница 30: ...formation about the networking industry You can access iQ Magazine at this URL http business cisco com prod tree taf 3fasset_id 44699 public_view tru e kbns 1 html Internet Protocol Journal is a quarterly journal published by Cisco Systems for engineering professionals involved in the design development and operation of public and private internets and intranets You can access the Internet Protoco...

Страница 31: ...r GBIC modules or connecting to the small form factor pluggable SFP modules see Chapter 3 Installation For product overview information see Chapter 2 Overview These steps describe how to do a simple installation 1 Taking Out What You Need page 1 2 2 Connecting to the Console Port page 1 3 3 Starting the Terminal Emulation Software page 1 4 4 Connecting to a Power Source page 1 5 5 Entering the Ini...

Страница 32: ...atalyst 2950 Switch Adapter Cable and AC Power Cord Note You need to provide the Category 5 straight through cables to connect the switch ports to other Ethernet devices 1 Catalyst 2950 switch 2 RJ 45 to DB 9 adapter cable 3 AC power cord SYST RPS DUPLX MODE SPEED UTIL STAT 10BASE T 100BASE TX 100BASE FX Catalyst 2950SERIES 1x 2x 3x 4x 5x 6x 7x 8x 9x 10x 11x 12x 13x 14x 15x 16x 17x 18x 19x 20x 21x...

Страница 33: ...connect the PC or terminal to the switch Step 1 Using the supplied RJ 45 to DB 9 adapter cable insert the RJ 45 connector into the console port on the rear of a switch as shown in Figure 1 2 Step 2 Attach the DB 9 female DTE of the adapter cable to a PC serial port or attach an appropriate adapter to the terminal Figure 1 2 Connecting a Switch to a PC 1 Catalyst 2950 switch 2 Power cord 3 RJ 45 to...

Страница 34: ... terminal emulation software frequently a PC application such as Hyperterminal or ProcommPlus makes communication between the switch and your PC or terminal possible Follow these steps to start a terminal emulation session Step 1 Start the terminal emulation program if you are using a PC or terminal Step 2 Start a terminal emulation session Step 3 Configure the baud rate and character format of th...

Страница 35: ...ar panel For an LRE switch connect one end of the supplied AC power cord to the power connector on a switch front panel Figure 1 2 shows how to connect the AC power cord to the connector on a switch rear panel Step 2 Connect the other end of the power cable to a grounded AC outlet Note If you are connecting the switch to a Cisco redundant power system RPS refer to the documentation that shipped wi...

Страница 36: ...u plan to use the Cluster Management Suite CMS to configure and manage the switch IP Settings You will need this information from your network administrator before you complete the setup program Switch IP address Subnet mask IP netmask Default gateway router Enable secret password Enable password Telnet password Completing the Setup Program Follow these steps to complete the setup program and to c...

Страница 37: ...es The secret password is encrypted and the enable password is in plain text Enter enable secret secret_password Step 4 Enter an enable password and press Return Enter enable password enable_password Step 5 Enter a virtual terminal Telnet password and press Return The password can be from 1 to 25 alphanumeric characters is case sensitive allows spaces but ignores leading spaces Enter virtual termi...

Страница 38: ...ter N the switch appears as a candidate switch in the CMS You can configure the switch as a command switch later through the CLI or CMS interface To configure it later type no Would you like to enable as a cluster command switch yes no no You have now completed the initial configuration of the switch and the switch displays that configuration This is an example of the output that appears The follo...

Страница 39: ...latile RAM NVRAM by selecting option 2 Enter your selection 2 2 Make your selection and press Return After you complete the setup program the switch can run the default configuration that you created If you want to change this configuration or want to perform other management tasks use one of these tools CLI CMS from your browser To use the CLI enter commands at the Switch prompt through the conso...

Страница 40: ...of the cable to the Ethernet RJ 45 port of the workstation PC server or router For information about connecting to the GBIC module ports see the Connecting to GBIC Module Ports section on page 3 44 For information about connecting to the SFP ports see the Connecting to an SFP Module section on page 3 49 Figure 1 3 Connecting to a Front Panel Port 1 Catalyst 2950 switch 2 PC 3 Category 5 straight t...

Страница 41: ...ersion of CMS you must clear your browser cache before launching the new CMS version When you clear the cache remove all the jar_cache tmp files from the temporary directory The path to the directory is different for these operating systems Windows NT and Windows 2000 TEMP Windows 95 and 98 Windows Temp The browser prompts for a username and password when you access CMS If no username is configure...

Страница 42: ...e 1 2 CMS checks the browser version when starting a session to ensure that the browser is supported If the browser is not supported CMS displays an error message and the session does not start Table 1 1 Recommended Platform Configuration for Web Based Management OS Processor Speed DRAM Number of Colors Resolution Font Size Windows NT 4 01 1 Service Pack 3 or higher is required Pentium 300 MHz 128...

Страница 43: ...Other functionality is similar to that of Netscape Communicator Guidelines for Installing and Enabling the Java Plug In A Java plug in is required for the browser to access and run the Java based CMS Download and install the plug in before you start CMS If CMS does not launch automatically you might not have a supported Java plug in installed or the Java plug in might not be enabled CMS does not a...

Страница 44: ...stalled select Start Settings Control Panel The Java plug in is listed with the version number in the Control Panel menu Installing the Required Java Plug In Each platform Windows and Solaris supports three plug in versions For information on the supported plug ins see the Windows XP Windows 2000 Windows 95 Windows 98 and Windows NT 4 0 Plug Ins section on page 1 15 and the Solaris Platforms secti...

Страница 45: ...ions by deselecting Internet Filter or Download Scan Windows XP Windows 2000 Windows 95 Windows 98 and Windows NT 4 0 Plug Ins One of the these Java plug ins is required for the browser to access and run the Java based CMS These Java plug ins are supported in Windows environments Java plug in 1 4 Java plug in 1 3 1 Java plug in 1 3 0 You can download these plug ins from this URL http www cisco com...

Страница 46: ...Chapter 1 Quick Installation Accessing the Switch from Your Browser 1 16 Catalyst 2950 Desktop Switch Hardware Installation Guide 78 11157 05 ...

Страница 47: ...s and other network devices such as servers routers and other switches All models of the switch are cluster capable but only some models are stackable You can use switches with Gigabit Interface Converter GBIC module slots to create switch stacks by using Gigastack GBICs Some switch models can be deployed as backbone switches aggregating 10BASE T 100BASE TX Gigabit Ethernet and Long Reach Ethernet...

Страница 48: ...50G 48 EI 48 10 100 Ethernet ports and 2 GBIC module slots Catalyst 2950ST 8 LRE switch 8 LRE ports 2 10 100 1000 Ethernet ports and 2 small form factor pluggable SFP module slots Two of the four uplink ports are active at one time Catalyst 2950ST 24 LRE switch 24 LRE ports 2 10 100 1000 Ethernet ports and 2 SFP module slots Two of the four uplink ports are active at one time Catalyst 2950ST 24 LR...

Страница 49: ...0 1000 ports on the Catalyst 2950 LRE switches autonegotiates the speed and duplex setting when operating at 10 or 100 Mbps When the switch is running at 1000 Mbps it supports only full duplex mode For 100BASE FX ports supports only 100 Mbps and full duplex settings For 1000BASE SX ports supports only 1000 Mbps and full duplex settings Supports 8192 MAC addresses Checks for errors on a received pa...

Страница 50: ...Catalyst 2950 LRE switches also contains the console port and AC power connector On the Catalyst 2950ST 24 LRE 997 switch the front panel contains a DC power connector also referred to as the terminal block header a DC ground lug and an RJ 45 console port For more information about the power connectors on the LRE switches see the Power Connectors section on page 2 29 For more information on the co...

Страница 51: ...PLX MODE SPEED UTIL STAT 10Base T 100Base TX Catalyst 2950SERIES 1x 2x 3x 4x 5x 6x 7x 8x 9x 10x 11x 12x 10 100 ports 45567 SYST RPS DUPLX MODE SPEED UTIL STAT 10Base T 100Base TX Catalyst 2950SERIES 1 2 3 4x 5x 6x 7x 8x 9x 10x 11x 12x 13x 14x 15x 16x 17x 18x 19x 20x 21x 22x 23x 24x 10 100 ports 100BASE FX ports 45570 SYST RPS DUPLX MODE SPEED UTIL STAT 10BASE T 100BASE TX 100BASE FX Catalyst 2950S...

Страница 52: ...lyst 2950SERIES 1X 2X 11X 12X 1 2 3 4 5 6 7 8 9 10 11 12 1 2 10 100 ports GBIC module slots 60978 60977 SYST RPS DUPLX MODE SPEED UTIL STAT Catalyst 2950SERIES 1X 2X 11X 12X 1 2 3 4 5 6 7 8 9 10 11 12 1 13X 14X 23X 24X 13 14 15 16 17 18 19 20 21 22 23 24 2 10 100 ports GBIC module slots 60977 SYST RPS DUPLX MODE SPEED UTIL STAT Catalyst 2950SERIES 1X 2X 11X 12X 1 2 3 4 5 6 7 8 9 10 11 12 1 13X 14X...

Страница 53: ...34X 15X 16X 31X 32X 47X 48X 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 1 48 2 SYST RPS STAT UTIL DUPLX SPEED MODE 10 100 ports GBIC module slots 65507 1 2 3 4 5 6 7 8 2 1 SYST RPS STAT SPEED MODE CONSOLE RATING 100 127 200 240V 1 0A 0 5A 50 60HZ Catalyst 2950SERIES LRE 2 1 LRE port 10 100 1000 ports SFP ports ...

Страница 54: ...21 22 23 24 2 1 SYST RPS STAT SPEED MODE CONSOLE RATING 100 127 200 240V 1 0A 0 5A 50 60HZ Catalyst 2950SERIES LRE 2 1 LRE port Power connector 81184 10 100 1000 ports SFP ports Console port 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 2 1 CONSOLE A B INPUT 36 72 V CURREN T 2 1 A SYST RPS STAT SPEED MODE Catalyst 2950SERIE S LRE 997 2 1 LRE port Power connector 89363 10 100 1000 ...

Страница 55: ...gory 3 4 or 5 cabling 100BASE TX devices such as high speed workstations servers hubs routers and other switches through standard RJ 45 connectors and two or four twisted pair Category 5 cabling 10 100 ports 1000BASE SX ports 74516 SYST RPS DUPLX MODE SPEED UTIL STAT 10BASE T 100BASE TX 1000BASE SX Catalyst 2950SERIES 1x 2x 3x 4x 5x 6x 7x 8x 9x 10x 11x 12x 13x 14x 15x 16x 17x 18x 19x 20x 21x 22x 2...

Страница 56: ...its own capabilities If the attached device supports autonegotiation the port negotiates the best connection that is the fastest line speed that both devices support and full duplex transmission if the attached device supports it and configures itself accordingly 10 100 1000 Ports The 10 100 1000 ports on the Catalyst 2950T 24 and the Catalyst 2950 LRE switches use RJ 45 connectors and twisted pai...

Страница 57: ...feet 100 meters Note On the Catalyst 2950 LRE switches the four input uplink ports are bundled as two logical ports each consisting of a copper 10 100 1000 port and a fiber optic SFP module slot respectively Within each logical port you can use only the copper or the fiber optic port at one time If a Catalyst 2950 LRE switch senses more than two connections for both logical ports the switch choose...

Страница 58: ...LRE 997 switch You can hot swap the CPE devices without powering down the switch or disrupting the other switch ports The default mode for each LRE port is speed autosensing and half duplex operation For information about configuring the LRE ports refer to the switch software configuration guide If telephone services such as voice or an Integrated Services Digital Network ISDN use the same cabling...

Страница 59: ...fiber optic connections that cannot exceed 1804 feet 550 meters 1000BASE LX LH GBIC module for fiber optic connections that cannot exceed 32 810 feet 10 kilometers 1000BASE ZX GBIC module for fiber optic connections that cannot exceed 328 100 feet 100 kilometers 1000BASE T GBIC module for copper connections that cannot exceed 328 feet 100 meters CWDM GBIC module for single mode fiber optic connect...

Страница 60: ...about these GBIC modules refer to your GBIC module documentation SFP Module Slots On the Catalyst 2950 LRE switch the SFP module slots support the SFP modules listed in the Catalyst 2950 LRE switch release notes The Catalyst 2950 LRE switch has four physical input ports that are logically bundled as two ports Each logical port consists of a copper 10 100 1000 port and a fiber optic SFP module slot...

Страница 61: ...ou can insert them into an SFP module slot Use fiber optic cables with LCs to connect to an SFP module You can use the SFP modules for Gigabit uplink connections to other switches The SFP modules support nominal wavelengths from 850 to 1550 nanometers nm The Catalyst 2950 LRE switches support these Cisco SFP options 1000BASE LX 1000BASE SX 1000BASE ZX Refer to the Catalyst 2950 LRE switch release ...

Страница 62: ...isco approved SFP module remove the module from the switch and replace it with a Cisco approved module For more information about these SFP modules refer to your SFP module documentation Table 2 2 Cabling Stipulations for SFP Modules SFP Module 62 5 125 micron Multimode 850 nm1 Fiber 1 nm nanometer 50 125 micron Multimode 850 nm Fiber 62 5 125 micron Multimode 1310 nm Fiber 50 125 micron Multimode...

Страница 63: ... and 2950G 24 EI DC switches Figure 2 15 for the Catalyst 2950G 48 EI switches Figure 2 16 for the Catalyst 2950ST 8 LRE and 2950ST 24 LRE switches Figure 2 16 for the Catalyst 2950ST 24 LRE 997 switches All of the LEDs described in this section except the utilization meter UTIL are visible in the Cluster Management Suite CMS The switch software configuration guide describes how to use CMS to conf...

Страница 64: ...950G 24 EI DC Switches Figure 2 15 LEDs on Catalyst 2950G 48 EI Switches SYST RPS DUPLX MODE SPEED UTIL STAT 1X 2X 11X 12X 1 2 3 4 5 6 7 8 9 10 11 12 65395 Mode button Port mode LEDs System LED Port status LEDs RPS LED 1X 2X 15X 16X 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 SYST RPS STAT UTIL DUPLX SPEED MODE Mode button Port mode LEDs System LED RPS LED Port status LEDs 65508 ...

Страница 65: ... Overview Front Panel Description Figure 2 16 LEDs on Catalyst 2950ST 8 LRE and 2950ST 24 LRE Switches SYST RPS STAT SPEED MODE CONSOLE RATING 100 127 200 240V 1 0A 0 5A 50 60HZ 1 2 3 4 5 6 7 8 81187 Mode button Speed LED STAT LED System LED Port status LEDs Redundant power system LED ...

Страница 66: ...and meanings For information about the system LED colors during the power on self test POST see the Connecting to a Power Source section on page 1 5 A B INPUT 36 72 V CURRENT 2 1 A SYST RPS STAT SPEED MODE 1 2 3 4 5 6 7 8 9 10 11 12 CONSOLE 89364 Redundant power system LED Mode button Speed LED STAT LED Port status LEDs System LED Table 2 3 System LED Color System Status Off System is not powered ...

Страница 67: ... 2 13 to Figure 2 16 to highlight the mode that you want Release the button to enable the highlighted mode Table 2 4 RPS LED Color RPS Status Off RPS is off or is not installed Solid green RPS is connected and ready to provide back up power Flashing green RPS is connected but is unavailable because it is providing power to another device redundancy has been allocated to a neighboring device Solid ...

Страница 68: ...ve a UTIL LED Switch utilization The bandwidth in use by the switch DUPLX2 2 A Catalyst 2950 LRE switch does not have a DUPLX LED Port duplex mode The port duplex mode half duplex or full duplex SPEED Port speed The port operating speed 10 or 100 Mbps for 10 100 ports and 10 100 or 1000 Mbps for 10 100 1000 ports Table 2 6 Meaning of Port LED Colors in Different Modes for Non LRE Switches Port Mod...

Страница 69: ...n exceeds the maximum utilization the maximum utilization is automatically updated DUPLX half or full duplex Off Port is operating in half duplex Green Port is operating in full duplex SPEED 10 100 ports Off Port is operating at 10 Mbps Green Port is operating at 100 Mbps 10 100 1000 ports Off Port is operating at 10 Mbps Green Port is operating at 100 Mbps Flashing green Port is operating at 1000...

Страница 70: ...ort is not forwarding If a port is not forwarding it was disabled by management an address violation or STP Note After a port is reconfigured the port LED can remain amber for up to 30 seconds while STP checks the switch for possible loops DUPLX half or full duplex Off Port is operating in half duplex Green Port is operating in full duplex SPEED 10 100 1000 ports1 2 1 On an LRE switch the LEDs for...

Страница 71: ... the switch is using more than 25 but less than 50 percent of the total bandwidth and so on If only the far left LED is green the switch is using less than 0 0488 percent of the total bandwidth See Figure 2 18 and Figure 2 19 Figure 2 18 Bandwidth Utilization on Catalyst 2950 12 Switches Figure 2 19 Bandwidth Utilization on Catalyst 2950 24 2950C 24 2950SX 24 and 2950T 24 Switches 1x 2x 3x 4x 5x 6...

Страница 72: ... the switch is using more than 25 but less than 50 percent of the total bandwidth If LEDs for both GBIC module slots are off the switch is using less than 25 percent of the total bandwidth and so on See Figure 2 21 Figure 2 21 Bandwidth Utilization on Catalyst 2950G 24 EI and 2950G 24 EI DC Switches If all LEDs on a Catalyst 2950G 48 EI switch are green no amber showing the switch is using 50 perc...

Страница 73: ...ferred to as the terminal block header a DC ground lug an RPS connector and an RJ 45 console port See Figure 2 25 The rear panel of the Catalyst 2950ST 8 LRE 2950ST 24 LRE and 2950ST 24 LRE 997 switches has only an RPS connector See Figure 2 26 Figure 2 23 Catalyst 2950 Switch Rear Panel 65510 2 Catalyst 2950 1 25 1 1X 2X 15X 16X 2 3 24 5 6 7 8 9 10 11 12 13 14 15 16 17 17X 18X 31X 32X 18 19 20 21...

Страница 74: ...alyst 2950G 24 EI DC Switch Rear Panel RATING 100 127V 1A 200 240V 0 5A 50 60Hz DC INPUT FOR REMOTE POWER SUPPLY SPECIFIED IN MANUAL 12V 4 5A CONSOLE AC power connector RPS connector Fan exhaust RJ 45 console port 65511 DC INPUT FOR REMOTE POWER SUPPLY SPECIFIED IN MANUAL 12V 4 5A 36 72V 1 0 5A A B CONSOLE DC power connector RPS connector Fan RJ 45 console port DC ground lug 65291 ...

Страница 75: ...ctor The internal AC power supply is an autoranging unit that supports input voltages between 100 and 240 VAC Other than for the Catalyst 2950G 24 EI DC and the Catalyst 2950ST 24 LRE 997 switches use the supplied AC power cord to connect the AC power connector to an AC power outlet Note The AC power connector is on the front panel of the Catalyst 2950ST 8 LRE and Catalyst 2950ST 24 LRE switches Y...

Страница 76: ... Catalyst 2950G 24 EI DC and 2950ST 24 LRE 997 switches only to a DC input power source that has an input supply voltage from 36 to 72 VDC If the supply voltage is not in this range the switch might not operate properly or might be damaged Cisco RPS Connector Specific Cisco RPS models support specific Catalyst 2950 switches Cisco RPS 300 model PWR300 AC RPS N1 Cisco RPS 675 model PWR675 AC RPS N1 ...

Страница 77: ...witch Warning Attach only the Cisco RPS 675 model PWR675 AC RPS N1 to the RPS receptacle The RPS is a 675W redundant power system that can support six external network devices and provides DC power to one failed device at a time It automatically senses when the internal power supply of a connected device fails and provides power to that device preventing loss of network traffic For more informatio...

Страница 78: ...is attached to your network you can use a Telnet connection to manage the switch from a remote location For more information refer to the switch command reference CiscoView application You can use the CiscoView device management application to set configuration parameters and to view switch status and performance information This application which you purchase separately can be a standalone applic...

Страница 79: ...t device that works with embedded Cisco Networking Services CNS agents in the switch software You can automate initial configurations and configuration updates by generating switch specific configuration changes sending them to the switch executing the configuration change and logging the results For more information refer to the switch software configuration guide and the documentation that came ...

Страница 80: ...Chapter 2 Overview Management Options 2 34 Catalyst 2950 Desktop Switch Hardware Installation Guide 78 11157 05 ...

Страница 81: ...e 3 2 Verifying Switch Operation page 3 10 Installing the Switch in a Rack page 3 10 Installing the Switch on a Table Shelf or Desk page 3 22 Installing the Switch on a Wall page 3 23 Installing the GBIC Modules page 3 26 Installing and Removing SFP Modules page 3 28 Connecting to 10 100 and 10 100 1000 Ports page 3 32 Connecting to 100BASE FX and 1000BASE SX Ports page 3 36 Connecting to an LRE P...

Страница 82: ...gs Warning This equipment is to be installed and maintained by service personnel only as defined by AS NZS 3260 Clause 1 2 14 3 Service Personnel Warning This unit is intended for installation in restricted access areas A restricted access area can be accessed only through the use of a special tool lock and key or other means of security Warning Only trained and qualified personnel should be allow...

Страница 83: ...serves as the main disconnecting device Warning To prevent the switch from overheating do not operate it in an area that exceeds the maximum recommended ambient temperature of 113 F 45 C To prevent airflow restriction allow at least 3 inches 7 6 cm of clearance around the ventilation openings Warning When installing the unit always make the ground connection first and disconnect it last Warning Th...

Страница 84: ...regulations Warning Attach only the Cisco RPS model PWR300 AC RPS N1 to the RPS receptacle Warning Invisible laser radiation may be emitted from disconnected fibers or connectors Do not stare into beams or view directly with optical instruments Warning Class 1 laser product Warning Avoid direct exposure to the laser beam EMC Regulatory Statements This section includes specific regulatory statement...

Страница 85: ...erference by Information Technology Equipment VCCI If this equipment is used in a domestic environment radio disturbance may arise When such trouble occurs the user may be required to take corrective actions Warning This is a Class A Information Product when used in residential environment it may cause radio frequency interference under such circumstances the user may be requested to take appropri...

Страница 86: ...d properly according to the Hungarian EMC Class A requirements MSZEN55022 Class A equipment is designed for typical commercial establishments for which special conditions of installation and protection distance are used Figyelmeztetés Figyelmeztetés a felhasználói kézikönyv számára Ez a berendezés A osztályú termék felhasználására és üzembe helyezésére a magyar EMC A osztályú követelményeknek MSZ ...

Страница 87: ...hed device cannot exceed 32 810 feet 10 kilometers For 1000BASE ZX GBIC module ports the cable length from a switch to an attached device cannot exceed 328 100 feet 100 kilometers For 1000BASE T GBIC module ports the cable length from a switch to an attached device cannot exceed 328 feet 100 meters For Coarse Wave Division Multiplexing CWDM GBIC module ports the cable length from a switch to an at...

Страница 88: ...t might be greater than normal room temperature Cabling is away from sources of electrical noise such as radios power lines and fluorescent lighting fixtures Verifying Package Contents Note Carefully remove the contents from the shipping container and check each item for damage If any item is missing or damaged contact your Cisco representative or reseller for support Return all packing materials ...

Страница 89: ...ining these items One DC terminal block plug also called a terminal block header One ground lug Two number 10 32 screws for attaching the ground lug to the switch Two 23 inch rack mounting brackets with 1 inch spacing for telco racks Four number 8 Phillips truss head screws for attaching the brackets to the switch Two number 12 Phillips machine screws for attaching the brackets to a rack Note The ...

Страница 90: ...g the Switch in a Rack Warning To prevent bodily injury when mounting or servicing this unit in a rack you must take special precautions to ensure that the system remains stable The following guidelines are provided to ensure your safety This unit should be mounted at the bottom of the rack if it is the only unit in the rack When mounting this unit in a partially filled rack load the rack from the...

Страница 91: ...talyst 2950G 48 EI switch in a 19 inch rack use two Phillips flat head screws to attach the long side of the 19 or 24 inch bracket to the switch See Figure 3 1 Figure 3 2 and Figure 3 3 When mounting a Catalyst 2950G 48 EI switch in a 19 inch rack use three Phillips flat head screws to attach the long side of the 19 or 24 inch bracket to the switch See Figure 3 4 Figure 3 5 and Figure 3 6 When mou...

Страница 92: ...e 3 1 to Figure 3 15 show how to attach a bracket to one side of the switch Follow the same steps to attach the second bracket to the opposite side of the switch Figure 3 1 Attaching Brackets on the Switch in a 19 Inch Rack Front Panel Forward SYST RPS DUPLX MODE SPEED UTIL STAT 1x 2x 3x 4x 5x 45580 Number 8 Phillips flat head screws ...

Страница 93: ...tallation Installing the Switch in a Rack Figure 3 2 Attaching Brackets on the Switch in a 19 Inch Rack Rear Panel Forward Figure 3 3 Attaching Brackets on the Switch in a 19 Inch Telco Rack CONSOLE Number 8 Phillips flat head screws 52916 CONSOLE 45582 Number 8 Phillips flat head screws ...

Страница 94: ...ets on the Catalyst 2950G 48 EI Switch in a 19 Inch Rack Front Panel Forward Figure 3 5 Attaching Brackets on the Catalyst 2950G 48 EI Switch in a 19 Inch Rack Rear Panel Forward SYST RPS STAT UTIL DUPLX SPEED MODE 1X 2X 15X 16X 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Number 8 Phillips flat head screws 65512 CONSOLE Number 8 Phillips flat head screws 65513 ...

Страница 95: ... on the Catalyst 2950G 48 EI Switch in a 19 Inch Telco Rack Figure 3 7 Attaching Brackets on the Catalyst 2950G 24 EI DC or 2950ST 24 LRE 997 Switch in a 23 Inch Telco Rack Front Panel Forward CONSOLE 65514 Number 8 Phillips flat head screws SYST RPS DUPLX MODE SPEED UTIL STAT 1X 2X 11X 12X 1 2 3 4 5 6 7 8 9 10 11 12 65673 Number 8 Phillips truss head screws ...

Страница 96: ... 3 16 Catalyst 2950 Desktop Switch Hardware Installation Guide 78 11157 05 Figure 3 8 Attaching Brackets on the Catalyst 2950G 24 EI DC or 2950ST 24 LRE 997 Switch in a 23 Inch Telco Rack Rear Panel Forward CONSOLE Number 8 Phillips truss head screws 65674 ...

Страница 97: ...ing Brackets on the Catalyst 2950G 24 EI DC or 2950ST 24 LRE 997 Switch in a 23 Inch Telco Rack Figure 3 10 Attaching Brackets on the Switch in a 24 Inch Rack Front Panel Forward CONSOLE 65675 Number 8 Phillips truss head screws SYST RPS DUPLX MODE SPEED UTIL STAT 1X 2X 11X 12X 1 2 3 4 5 6 7 8 9 10 11 12 65666 Number 8 Phillips truss head screws ...

Страница 98: ...ling the Switch in a Rack 3 18 Catalyst 2950 Desktop Switch Hardware Installation Guide 78 11157 05 Figure 3 11 Attaching Brackets on the Switch in a 24 Inch Rack Rear Panel Forward CONSOLE Number 8 Phillips truss head screws 65665 ...

Страница 99: ... 3 12 Attaching Brackets on the Switch in a 24 Inch Telco Rack Figure 3 13 Attaching Brackets on the Catalyst 2950G 48 EI Switch in a 24 Inch Rack Front Panel Forward CONSOLE 65667 Number 8 Phillips truss head screws SYST RPS STAT UTIL DUPLX SPEED MODE 1X 2X 15X 16X 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 74528 Phillips flat head screws ...

Страница 100: ...aching Brackets on the Catalyst 2950G 48 EI Switch in a 24 Inch Rack Rear Panel Forward Figure 3 15 Attaching Brackets on the Catalyst 2950G 48 EI Switch in a 24 Inch Telco Rack CONSOLE 74529 Phillips flat head screws Catalyst 2950SERIES 47X 48X 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 1 48 2 74530 Phillips flat head screws 24 Configuration ...

Страница 101: ... obscuring the switch and other devices in the rack you can also attach the cable guide to the rack See the Attaching the Optional Cable Guide section for instructions Figure 3 16 Mounting the Switch in a Rack After mounting the switch in the rack start the terminal emulation software and provide power to the switch See Chapter 1 Quick Installation for instructions SYST RPS DUPLX MODE SPEED UTIL S...

Страница 102: ...yst 2950 LRE switches Figure 3 17 Attaching the Cable Guide Installing the Switch on a Table Shelf or Desk Before placing the switch on a table shelf or desk locate the adhesive strip with rubber feet in the mounting kit envelope and attach four rubber feet to the recessed areas on the switch bottom Place the switch on a table shelf or desk near an AC power source or DC input power source Start th...

Страница 103: ...back of the switch You can mount the Catalyst 2950 switch to a wall in a face up configuration To attach the switch to a wall follow the procedures in this section 1 Attaching the Brackets to the Switch page 3 23 2 Attaching the RPS Connector Cover page 3 24 3 Mounting the Switch to a Wall page 3 25 Attaching the Brackets to the Switch Use the supplied Phillips flat head screws to attach a bracket...

Страница 104: ... not using a redundant power system RPS with your switch use two number 4 Phillips pan head screws to install an RPS connector cover to the back of the switch See Figure 3 19 The pan head screws are included in the accessory kit Warning If an RPS is not connected to the switch install an RPS connector cover on the back of the switch Figure 3 19 Attaching the RPS Connector Cover 47303 Phillips trus...

Страница 105: ...r to a firmly attached plywood mounting backboard as shown in Figure 3 20 Figure 3 20 Mounting a Catalyst 2950 Switch to a Wall After the switch is mounted on the wall power the switch as described in Chapter 1 Quick Installation 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 B S Y S T C O N S O L E C a t a l y s t 2 9 5 0 S E R IE S L R E 2 A R P S S TA T S P E E ...

Страница 106: ...er to the documentation that came with that GBIC module For detailed instructions on installing removing and cabling the GBIC module the 1000BASE X module the 1000BASE T module the CWDM GBIC module or the GigaStack module refer to your GBIC documentation Caution To prevent electrostatic discharge ESD damage when installing GBIC modules follow your normal board and component handling procedures Fig...

Страница 107: ...g the GBIC Modules Figure 3 22 Installing a 1000BASE T GBIC Module in a Switch Figure 3 23 Installing a GigaStack GBIC Module in a Switch Catalyst 2950SERIES 1 2 74531 Metal flap door GBIC module slot 1000BASE T GBIC module Catalyst 2950SERIES 1 2 74533 Metal flap door GBIC module slot GigaStack GBIC module ...

Страница 108: ...ernal serial EEPROM that is encoded with security information This encoding provides a way for Cisco to identify and validate that the SFP module meets the requirements for the switch For detailed instructions on installing removing and cabling the SFP module refer to your SFP module documentation Installing SFP Modules into SFP Module Slots SFP modules use different types of latches for their ins...

Страница 109: ...Bale Clasp Latch To insert an SFP module into the SFP module slot follow these steps Step 1 Attach an ESD preventive wrist strap to your wrist and to a bare metal surface on the chassis Step 2 Find the send TX and receive RX markings that identify the top side of the SFP module Note On some SFP modules the send and receive TX and RX markings might be replaced by arrows that show the direction of t...

Страница 110: ...Do not remove the dust plugs from the SFP module port or the rubber caps from the fiber optic cable until you are ready to connect the cable The plugs and caps protect the SFP module ports and cables from contamination and ambient light Step 6 Insert the LC into the SFP module Removing SFP Modules from SFP Module Slots To remove an SFP module from a module receptacle follow these steps Step 1 Atta...

Страница 111: ... 28 Using the Mylar Tab Latch to Remove an SFP Module from a Slot If the module has an actuator button latch use your thumb to push inward on the wedge to free the locking pin and use your index finger to grip the ridge on top of the SFP module Pull straight out to remove the module Figure 3 29 Using the Actuator Button Latch to Remove an SFP Module from an SFP Module Slot If the module has a bale...

Страница 112: ...ate at the speed and duplex settings of attached devices They operate at 10 or 100 Mbps in half or full duplex mode If the attached devices do not support autonegotiation you can explicitly set the speed and duplex parameters The 10 100 1000 ports configure themselves to operate at the speed setting of attached devices These ports on Catalyst 2950T 24 switches operate at 10 100 or 1000 Mbps in ful...

Страница 113: ...ces with manually set speed and duplex parameters can reduce performance or result in link failures between the devices To maximize performance choose one of these methods for configuring the ports Let the 10 100 ports autonegotiate both speed and duplex let the 10 100 1000 ports on the LRE switches autonegotiate both speed and duplex and let the 10 100 1000 ports on the Catalyst 2950G 24 EI DC sw...

Страница 114: ...rkstations and routers insert a twisted pair straight through cable in a front panel RJ 45 connector as shown in Figure 3 31 Figure 3 32 and Figure 3 33 When connecting to switches or repeaters insert a twisted pair crossover cable See the Cable and Adapter Specifications section on page B 8 for cable pinout descriptions Note When connecting to 1000BASE T devices be sure to use a four twisted pair...

Страница 115: ... Figure 3 32 Connecting to a Port on Catalyst 2950G 12 EI 2950G 24 EI and 2950G 24 EI DC Switches Figure 3 33 Connecting to a Port on Catalyst 2950G 48 EI Switches SYST RPS DUPLX MODE SPEED UTIL STAT 65394 1X 2X 11X 12X 1 2 3 4 5 6 7 8 9 10 11 12 1X 2X 15X 16X 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 SYST RPS STAT UTIL DUPLX SPEED MODE 65517 ...

Страница 116: ...utions to cabling problems Step 4 Reconfigure and restart the target device if necessary Step 5 Repeat Steps 1 through 4 to connect each port Connecting to 100BASE FX and 1000BASE SX Ports The 100BASE FX and 1000BASE SX ports operate only in full duplex mode You can connect a 100BASE FX or 1000BASE SX port to an SC or ST port on a target device by using one of the MT RJ fiber optic patch cables li...

Страница 117: ...port See Figure 3 34 Figure 3 34 Connecting to a 100BASE FX or 1000BASE SX Port Step 3 Insert the other cable end in an SC or ST port on the target device Step 4 Observe the port status LED The LED turns green when the switch and the target device have an established link The LED turns amber while STP discovers the network topology and searches for loops This process takes about 30 seconds and the...

Страница 118: ...device to LRE ports on a Catalyst 2950ST 24 LRE 997 switch You can hot swap the CPE devices without powering down the switch or disrupting the other switch ports Connection Guidelines If telephone services such as voice or Integrated Services Digital Network ISDN use the same cabling as the LRE traffic you must connect the LRE to a plain old telephone service POTS splitter The splitter routes LRE ...

Страница 119: ...nature of digital PBX switches some digital PBX switch services use frequencies above 700 kHz You can use a Cisco LRE 48 POTS Splitter with a Catalyst 2950ST 8 LRE switch Catalyst 2950ST 24 LRE switch Cisco 575 LRE CPE and Cisco 585 LRE CPE For installation instructions refer to the Installation and Warranty Notes for the Cisco LRE 48 POTS Splitter The Catalyst 2950ST 24 LRE 997 switch and Cisco 5...

Страница 120: ...e You can order RJ 21 cables from your cable vendor or you can order these cables from your Cisco sales representative CAB 5 M120M120 5 Category 5 cable with 90 degree male to male RJ 21 connectors CAB 5 M180M120 5 Category 5 cable with 120 degree male to male RJ 21 connectors The screws that you need to secure the cable to the switch are shipped with the cable Contact your Cisco sales representat...

Страница 121: ...onnected to the wiring trunk to the RJ 21 connector the LRE port on the switch See Figure 3 36 and Figure 3 37 Step 2 Referring to Figure 3 36 and Figure 3 37 secure the cable to the switch For a 90 degree connector see the top of Figure 3 36 and Figure 3 37 For a 12 degree connector see the bottom of Figure 3 36 and Figure 3 37 Note The cable tie is not included with the connector and cable assem...

Страница 122: ...T 24 LRE Switch 81569 1 2 3 4 5 6 7 8 9 10 11 12 14 15 16 13 SYST RPS STAT SPEED MODE CONSOLE RATING 100 127 200 240V 1 0A 0 5A 50 60HZ 1 2 3 4 5 6 7 8 9 10 11 12 14 15 16 SYST RPS STAT SPEED MODE CONSOLE RATING 100 127 200 240V 1 0A 0 5A 50 60HZ RJ 21 connector Screw 0 20 inch 5 mm Cable tie Cable to wiring trunk Cable to wiring trunk RJ 21 connector RJ 21 connector Screw Screw RJ 21 connector ...

Страница 123: ...alyst 2950ST 24 LRE 997 Switch 1 2 3 4 5 6 7 8 9 10 11 12 CONSOLE A B INPUT 36 72 V CURRENT 2 1 A SYST RPS STAT SPEED MODE 1 2 3 4 5 6 7 8 9 10 11 12 CONSOLE A B INPUT 36 72 V CURRENT 2 1 A SYST RPS STAT SPEED MODE 89366 RJ 21 connector Screw 0 20 inch 5 mm Cable tie Cable to wiring trunk Cable to wiring trunk RJ 21 connector RJ 21 connector Screw Screw RJ 21 connector ...

Страница 124: ...evices refer to the Cisco LRE CPE Hardware Installation Guide Connecting to GBIC Module Ports These sections describe how to connect to a GBIC module port Connecting to 1000BASE X GBIC Module Ports page 3 45 Connecting to 1000BASE T GBIC Module Ports page 3 47 Connecting to GigaStack GBIC Module Ports page 3 48 For instructions about how to connect to the CWDM GBIC module ports refer to the docume...

Страница 125: ... 2950G 24 EI DC or Catalyst 2950ST 24 LRE 997 switch is suitable only for intrabuilding or nonexposed wiring connections Connecting to 1000BASE X GBIC Module Ports Caution Do not remove the rubber plugs from the GBIC module port or the rubber caps from the fiber optic cable until you are ready to connect the cable The plugs and caps protect the GBIC module ports and cables from contamination and a...

Страница 126: ... and the target device have an established link The LED turns amber while STP discovers the network topology and searches for loops This process takes about 30 seconds and then the port LED turns green If the LED is off the target device might not be turned on there might be a cable problem or there might be problem with the adapter installed in the target device See Chapter 3 Troubleshooting for ...

Страница 127: ...D damage follow your normal board and component handling procedures Step 1 When connecting to servers workstations and routers insert a four twisted pair straight through cable in the RJ 45 connector When connecting to switches or repeaters insert a four twisted pair crossover cable see Figure 3 39 Note When connecting to a 1000BASE T device be sure to use a four twisted pair Category 5 cable Figu...

Страница 128: ...kes about 30 seconds and then the LED turns green If the LED is off the target device might not be turned on there might be a cable problem or there might be a problem with the adapter installed in the target device See Chapter 3 Troubleshooting for solutions to cabling problems Step 4 Reconfigure and restart the switch or target device if necessary Connecting to GigaStack GBIC Module Ports After ...

Страница 129: ... problems Step 4 Reconfigure and restart the switch or target device if necessary Connecting to an SFP Module This section describes how to connect to an SFP module For instructions about how to install or remove an SFP module see the Installing and Removing SFP Modules section on page 3 28 Caution Do not remove the rubber plugs from the SFP module port or the rubber caps from the fiber optic cabl...

Страница 130: ... switch and the target device have an established link The LED turns amber while the STP discovers the network topology and searches for loops This process takes about 30 seconds and then the port LED turns green If the LED is off the target device might not be turned on there might be a cable problem or there might be problem with the adapter installed in the target device See Chapter 3 Troublesh...

Страница 131: ...ction on page 2 17 You can also get statistics from the Cluster Management Suite CMS the command line interface CLI the Cisco Intelligence Engine 2100 IE2100 Series Configuration Registrar or a Simple Network Management Protocol SNMP workstation Refer to the switch software configuration guide the switch command reference or the documentation that came with your IE2100 or SNMP application for deta...

Страница 132: ... series of tests that verifies that the switch functions properly When the switch begins POST the system LED is off If POST completes successfully the LED turns green If POST fails the LED turns amber Note POST failures are usually fatal Call Cisco Systems if your switch does not pass POST Diagnosing Problems Common switch problems fall into these categories Poor performance No connectivity Corrup...

Страница 133: ...ion about displaying port statistics For 10BASE T 100BASE TX and 1000BASE T connections The distance between the port and the attached device exceeds 328 feet 100 meters Reduce cable length to within the recommended distances If the switch is attached to a repeater the total distance between the two end stations exceeds the cabling guidelines Refer to your repeater documentation for cabling guidel...

Страница 134: ...le and Adapter Specifications section on page B 8 The cable is wired incorrectly Replace it with a tested good cable STP checking for possible loops Wait 30 seconds for port status LED to turn green Switch not recognizing a GBIC module Refer to your GBIC module documentation for more information Switch not recognizing an SFP module Refer to your SFP module documentation for more information Unread...

Страница 135: ...failed Switch placed in error disabled state after CWDM5 GBIC or SFP module is inserted Bad or non Cisco approved CWDM GBIC module or SFP module Remove the CWDM GBIC or SFP module from the switch and replace it with a Cisco approved module Use the errdisable recovery cause gbic invalid global configuration command to verify port status and enter a time interval to recover from the error disabled s...

Страница 136: ...ght be attempting to exceed the rate or the reach selected by the switch Reduce cable length to within the recommended distances See the LRE Port section on page 2 12 for LRE cabling guidelines Refer to the switch software configuration guide for information about verifying LRE port link status Catalyst 2950 LRE switch does not support the Cisco LRE CPE See the compatibility matrix Table 2 1 on pa...

Страница 137: ...0 switches Table A 6 lists the technical specifications for fiber optic uplink ports Table A 7 lists the regulatory agency approvals for the switches other than the Catalyst 2950 Long Reach Ethernet LRE switches Table A 8 and Table A 9 list the regulatory agency approvals for the Catalyst 2950 LRE switches Table A 10 lists the regulatory agency approval only for the Catalyst 2950G 24 EI DC switch ...

Страница 138: ...g Operating altitude Up to 10 000 ft 3000 m Storage altitude Up to 15 000 ft 4570 m Shock 84 in per sec 2 13 m per sec 1 1 This switch meets ASTM D3332 Power Requirements AC input voltage 100 to 127 200 to 240 VAC autoranging 50 to 60 Hz DC input voltages for the Cisco RPS2 300 Redundant Power System 2 RPS redundant power system 12V 4 5A DC input voltages for the Cisco RPS 675 12V 4 5A Power consu...

Страница 139: ...m Up to 10 000 ft 3000 m Storage altitude Up to 15 000 ft 4570 m Up to 15 000 ft 4570 m Shock 84 in per sec 2 13 m per sec 1 1 This switch meets ASTM D3332 84 in per sec 2 13 m per sec Power Requirements AC input voltage 100 to 127 200 to 240 VAC autoranging 50 to 60 Hz 100 to 127 200 to 240 VAC autoranging 50 to 60 Hz DC input voltage for the Cisco RPS2 300 2 RPS redundant power system 12V 4 5A 1...

Страница 140: ... to 85 noncondensing Operating altitude Up to 10 000 ft 3000 m Storage altitude Up to 15 000 ft 4570 m Shock 84 in per sec 2 13 m per sec 1 1 This switch meets ASTM D3332 Power Requirements Power consumption 30W 102 Btus per hour Power rating 0 05 kVA DC input voltage 36 to 72 VDC Wire gauge for power connection 18 AWG2 6 AWG for protective earth 2 AWG American Wire Gauge Branch circuit protection...

Страница 141: ...rating altitude Up to 10 000 ft 3000 m Storage altitude Up to 15 000 ft 4570 m Shock 84 in per sec 2 13 m per sec 1 1 This switch meets ASTM D3332 Power Requirements AC input voltage 100 to 127 200 to 240 VAC autoranging 50 to 60 Hz DC input voltage for the Cisco RPS2 300 2 RPS redundant power system 12V 4A DC input voltage for the Cisco RPS 675 12V 4A Power consumption 50W maximum 171 Btus per ho...

Страница 142: ...o 85 noncondensing Operating altitude Up to 10 000 ft 3000 m Storage altitude Up to 15 000 ft 4570 m Shock 84 in per sec 2 13 m per sec 1 1 This switch meets ASTM D3332 Power Requirements Power consumption 50W maximum 171 Btus per hour Power rating 0 083 kVA DC input voltage 36 to 72 VDC Wire gauge for power connection 18 AWG2 6 AWG for protective earth 2 AWG American Wire Gauge Branch circuit pro...

Страница 143: ...ion refer to the technical specifications that came with your SFP module Optical receiver sensitivity for 50 125 micron cabling 33 5 to 11 8 dBm3 13 5 dBm Optical receiver sensitivity for 62 5 125 micron cabling 33 5 to 11 8 dBm 12 5 dBm Optical transmitter power for 50 125 micron cabling 23 5 to 14 dBm 9 5 to 4 dBm Optical transmitter power for 62 5 125 micron cabling 20 to 14 dBm 9 5 to 4 dBm 1 ...

Страница 144: ... TUV GS to EN60950 with Amendments A1 through A4 and A11 EN 55024 ITE Immunity Standard CE Mark 1998 CE EN61000 4 2 IEC1000 4 2 Immunity to ESD EN61000 4 3 IEC1000 4 3 Immunity to Radio Frequency Electromagnetic Fields EN61000 4 4 IEC1000 4 4 Immunity to Electrical Fast Transients EN61000 4 5 IEC1000 4 5 Immunity to Power Line Transients Surges EN61000 4 6 IEC1000 4 6 Immunity to Radio Frequency I...

Страница 145: ... A4 and A11 EN 55024 ITE Immunity Standard CE Mark 1998 CE EN61000 4 2 IEC1000 4 2 Immunity to ESD EN61000 4 3 IEC1000 4 3 Immunity to Radio Frequency Electromagnetic Fields EN61000 4 4 IEC1000 4 4 Immunity to Electrical Fast Transients EN61000 4 5 IEC1000 4 5 Immunity to Power Line Transients Surges EN61000 4 6 IEC1000 4 6 Immunity to Radio Frequency Induced Conducted Disturbances EN61000 4 11 IE...

Страница 146: ...Appendix A Technical Specifications A 10 Catalyst 2950 Desktop Switch Hardware Installation Guide 78 11157 05 ...

Страница 147: ...hat you use to connect the switch to other devices Connector Specifications These sections describe the connectors used with the Catalyst 2950 switches and contains this information 10 100 Ports page B 2 10 100 1000 Ports page B 3 100BASE FX and 1000BASE SX Ports page B 6 LRE Port page B 5 GigaStack GBIC Module Ports page B 7 SFP Module Ports page B 7 Console Port page B 8 ...

Страница 148: ...gh cable wired for 10BASE T and 100BASE TX Figure B 8 shows the two twisted pair straight through cable schematics Figure B 10 shows the four twisted pair straight through cable schematics When connecting the ports to other devices such as switches or repeaters you can use a two or four twisted pair crossover cable Figure B 9 shows the two twisted pair crossover cable schematics Figure B 11 shows ...

Страница 149: ...nk ports are bundled as two logical ports each consisting of a copper 10 100 1000 port and a fiber optic small form factor pluggable SFP module slot respectively Within each logical port you can use only the copper or the fiber optic port at one time If the Catalyst 2950 LRE switch senses more than two connections for both logical ports the switch chooses the fiber optic connections over the coppe...

Страница 150: ...ed pair crossover cable schematics You can use Category 3 4 or 5 cabling when connecting to 10BASE T devices You must use Category 5 cabling when connecting to 100BASE TX devices Connecting to 1000BASE T Devices When connecting the ports to 1000BASE T devices such as servers workstations and routers you must use a four twisted pair Category 5 straight through cable wired for 10BASE T 100BASE TX an...

Страница 151: ... as shown in Figure B 3 Each LRE port uses two pins Because the Catalyst 2950ST 24 LRE and Catalyst 2950ST 24 LRE 997 switches use 48 pins pin 25 on the top row and pin 50 on the bottom row are not used The Catalyst 2950ST 8 LRE switch uses only 16 pins Pins 9 through 25 on the top row and pins 34 through 50 on the bottom row are not used Figure B 3 RJ 21 Connector 1 2 3 4 5 6 7 8 Pin Label 1 2 3 ...

Страница 152: ...mode fiber optic cabling You can connect a 100BASE FX or 1000BASE SX port to an SC or ST port on a target device by using one of the MT RJ fiber optic patch cables listed in Table 3 1 on page 3 36 Use the Cisco part numbers in Table 3 1 to order the patch cables that you need Figure B 4 MT RJ Connector 1000BASE X GBIC Module Ports 1000BASE X Gigabit Interface Converter GBIC module ports use duplex...

Страница 153: ...ables are proprietary high data rate cables with enhanced signal integrity and EMI protection Caution Do not use standard IEEE 1394 cables with the GigaStack GBIC Figure B 6 GigaStack Connector SFP Module Ports The Catalyst 2950 LRE switch uses SFP modules for fiber optic uplink ports Refer to the Catalyst 2950 LRE switch release notes for a list of supported SFP modules Figure B 7 SFP Module Conn...

Страница 154: ...r console port and adapter pinout information see Table B 3 and Table B 4 Cable and Adapter Specifications These sections describe the cables and adapters used with Catalyst 2950 switches Two Twisted Pair Cable Pinouts page B 8 Four Twisted Pair Cable Pinouts for 10 100 Ports page B 9 Four Twisted Pair Cable Pinouts for 1000BASE T Ports page B 10 RJ 21 Cable Pinouts page B 11 Rollover Cable and Ad...

Страница 155: ...r 10 100 Ports Four Twisted Pair Cable Pinouts for 10 100 Ports Figure B 10 and Figure B 11 show the schematics of four twisted pair cables for 10 100 ports Figure B 10 Four Twisted Pair Straight Through Cable Schematic for 10 100 Ports Switch 3 TD 6 TD 1 RD 2 RD Switch 3 TD 6 TD 1 RD 2 RD H5579 1 RD 2 RD 3 TD 6 TD 1 TD Switch Switch 2 TD 3 RD 6 RD 4 NC 5 NC 7 NC 8 NC 4 NC 5 NC 7 NC 8 NC 65271 ...

Страница 156: ...show the schematics of four twisted pair cables for 10 100 1000 ports on Catalyst 2950T 24 switches Catalyst 2950 LRE switches and 1000BASE T GBIC module ports Figure B 12 Four Twisted Pair Straight Through Cable Schematic for 10 100 1000 and 1000BASE T GBIC Module Ports 1 RD 2 RD 3 TD 6 TD 1 RD MGMT 10 100 Switch Hub 2 RD 3 TD 6 TD 4 NC 5 NC 7 NC 8 NC 4 NC 5 NC 7 NC 8 NC 65273 1 TPO 2 TPO 3 TP1 6...

Страница 157: ...es Table B 2 lists the RJ 21 cable pinouts on the Catalyst 2950ST 8 LRE switches 1 TPO 2 TPO 3 TP1 6 TP1 1 TP0 Switch Switch 2 TP0 3 TP1 6 TP1 4 TP2 5 TP2 7 TP3 8 TP3 4 TP2 5 TP2 7 TP3 8 TP3 65274 Table B 1 RJ 21 Cable Pinouts on the Catalyst 2950ST 24 LRE and Catalyst 2950ST 24 LRE 997 Switches Function Pin Pin Function Port 1 Tip 1 26 Port 1 Ring Port 2 Tip 2 27 Port 2 Ring Port 3 Tip 3 28 Port ...

Страница 158: ...ort 14 Ring Port 15 Tip 15 40 Port 15 Ring Port 16 Tip 16 41 Port 16 Ring Port 17 Tip 17 42 Port 17 Ring Port 18 Tip 18 43 Port 18 Ring Port 19 Tip 19 44 Port 19 Ring Port 20 Tip 20 45 Port 20 Ring Port 21 Tip 21 46 Port 21 Ring Port 22 Tip 22 47 Port 22 Ring Port 23 Tip 23 48 Port 23 Ring Port 24 Tip 24 49 Port 24 Ring No connect 25 50 No connect Table B 1 RJ 21 Cable Pinouts on the Catalyst 2950...

Страница 159: ...t 5 Ring Port 6 Tip 6 31 Port 6 Ring Port 7 Tip 7 32 Port 7 Ring Port 8 Tip 8 33 Port 8 Ring No connect 9 34 No connect No connect 10 35 No connect No connect 11 36 No connect No connect 12 37 No connect No connect 13 38 No connect No connect 14 39 No connect No connect 15 40 No connect No connect 16 41 No connect No connect 17 42 No connect No connect 18 43 No connect No connect 19 44 No connect ...

Страница 160: ... Identifying a Rollover Cable You can identify a rollover cable by comparing the two modular cable ends Hold the cable ends side by side with the tab at the back The wire connected to the pin on the outside of the left plug should be the same color as the wire connected to the pin on the outside of the right plug See Figure B 14 Figure B 14 Identifying a Rollover Cable Pin 1 H10632 Pin 8 Pin 1 on ...

Страница 161: ...e console port RJ 45 to DB 25 female DTE adapter and the console device Note The RJ 45 to DB 25 female DTE adapter is not supplied with the switch You can order a kit part number ACS DSBUASYN with that adapter from Cisco Table B 3 Console Port Signaling and RJ 45 to DB 9 Adapter Cabling Console Port DTE RJ 45 to DB 9 Adapter Cable Console Device Signal RJ 45 Pin DB 9 Pin Signal RTS 1 8 CTS Not con...

Страница 162: ... 05 Table B 4 Console Port Signaling and Cabling Using a DB 25 Adapter Console Port DTE RJ 45 to DB 9 Adapter Cable RJ 45 to DB 25 Terminal Adapter Console Device Signal RJ 45 Pin DB 9 Pin DB 25 Pin Signal RTS 1 8 5 CTS Not connected 2 6 6 DSR TxD 3 2 3 RxD GND 4 5 7 GND GND 5 5 7 GND RxD 6 3 2 TxD Not connected 7 4 20 DTR CTS 8 7 4 RTS ...

Страница 163: ...field replaceable units FRUs Do not open the chassis or attempt to remove or replace any components For information about obtaining service for this unit contact your reseller or Cisco sales representative Warning The Catalyst 2950ST 24 LRE 997 contains no field replaceable units FRUs Do not open the chassis or attempt to remove or replace any components For information about obtaining service for...

Страница 164: ...cycle mechanism model CT 700 CT 720 CT 920 CT 920CH CT 930 or CT 940CH 6 gauge copper ground wire insulated or noninsulated Four leads of 18 gauge copper wire Wire stripping tools for stripping 6 and 18 gauge wires Grounding the Switch Warning This equipment is intended to be grounded Ensure that the host is connected to earth ground during normal use Warning When installing the unit always make t...

Страница 165: ...t 2950G 24 EI DC switch or on the front panel of the Catalyst 2950ST 24 LRE 997 switch Use a standard Phillips screwdriver or a ratcheting torque screwdriver with a Phillips head Set the screws and the ground lug aside Step 2 If your ground wire is insulated use a wire stripping tool to strip the 6 gauge ground wire to 0 5 inch 12 7 millimeter mm 0 02 inch 0 5 mm as shown in Figure C 1 Figure C 1 ...

Страница 166: ...g the Ground Lug Step 5 Use the two number 10 32 screws to attach the ground lug and wire assembly to the rear panel of the Catalyst 2950G 24 EI DC switch or to the front panel of the Catalyst 2950ST 24 LRE 997 switch Step 6 Using a ratcheting torque screwdriver torque each ground lug screw to 15 lbf in 240 ounce force inches ozf in Figure C 3 shows how to torque the ground screws on a Catalyst 29...

Страница 167: ...install or replace this equipment Warning Before performing any of the following procedures ensure that power is removed from the DC circuit To ensure that all power is OFF locate the circuit breaker on the panel board that services the DC circuit switch the circuit breaker to the OFF position and tape the switch handle of the circuit breaker in the OFF position DC INPUT FOR REMOTE POWER SUPPLY SP...

Страница 168: ...power source that has an input supply voltage from 36 to 72 VDC If the supply voltage is not in this range the switch might not operate properly or might be damaged Caution The switch must be installed with 5A branch circuit protection Note This installation must comply with all applicable codes To wire the switch to a DC input power source follow these steps Step 1 Locate the terminal block plug ...

Страница 169: ...itch identifies the positive and negative positions for both the A and B feed wires Figure C 5 shows the positions on the Catalyst 2950G 24 EI DC switch Figure C 5 Positive and Negative Positions Step 3 Using an 18 gauge wire stripping tool strip each of the four wires coming from the DC input power source to 0 27 inch 6 6 mm 0 02 inch 0 5 mm Do not strip more than 0 29 inch 7 4 mm of insulation f...

Страница 170: ...block Warning An exposed wire lead from a DC input power source can conduct harmful levels of electricity Be sure that no exposed portion of the DC input power source wire extends from the terminal block plug Figure C 7 Inserting Wires in the Terminal Block Plug Step 5 Use a ratcheting torque screwdriver to torque the terminal block captive screw above the installed wire lead to 4 5 lbf in 72 ozf ...

Страница 171: ...950 Desktop Switch Hardware Installation Guide 78 11157 05 Appendix C Connecting to DC Power Wiring the DC Input Power Source Figure C 8 Torquing the Terminal Block Captive Screws 60533 Torque to 4 5 lbf in 72 ozf in ...

Страница 172: ...f Terminal Block Plug Step 7 Insert the terminal block plug in the terminal block header on the rear panel of the Catalyst 2950G 24 EI DC switch or on the front panel of the Catalyst 2950ST 24 LRE 997 switch Figure C 10 shows how to insert the terminal block on a Catalyst 2950G 24 EI DC switch Caution Secure the wires coming in from the terminal block so that they cannot be disturbed by casual con...

Страница 173: ...ring the DC Input Power Source Figure C 10 Inserting the Terminal Block in the Block Header Step 8 Remove the tape from the circuit breaker switch handle and move the circuit breaker handle to the on position DC INPUT FOR REMOTE POWER SUPPLY SPECIFIED IN MANUAL 12V 4 5A 36 72V 1 0 5A CONSOLE A B Tie wrap 65293 ...

Страница 174: ...Appendix C Connecting to DC Power Wiring the DC Input Power Source C 12 Catalyst 2950 Desktop Switch Hardware Installation Guide 78 11157 05 ...

Страница 175: ...isco RPS model PWR300 AC RPS N1 Warning Attach only the Cisco RPS model PWR300 AC RPS N1 to the RPS receptacle Waarschuwing Slechts de Cisco RPS model PWR300 AC RPS N1 aan de RPS contactdoos verbinden Varoitus Kiinnitä RPS vastakappaleeseen vain Cisco RPS malli PWR300 AC RPS N1 Avertissement Raccordez le bloc d alimentation Cisco RPS modèle PWR300 AC RPS N1 uniquement au connecteur RPS Warnung An ...

Страница 176: ... alla presa RPS Advarsel Koble bare Cisco RPS modell PWR300 AC RPS N1 til RPS stikkontakten Aviso Anexe o RPS Cisco modelo PWR300 AC RPS N1 apenas ao receptáculo RPS Advertencia Sólo conecte el Cisco RPS modelo PWR300 AC RPS N1 al receptáculo RPS Varning Koppla endast Ciscos RPS modell PWR300 AC RPS N1 till RPS uttaget Warning Attach only the Cisco RPS model PWR675 AC RPS N1 to the RPS receptacle ...

Страница 177: ...dell PWR675 AC RPS N1 angeschlossen werden Figyelem Az RPS csatlakozóhoz csak Cisco RPS PWR675 AC RPS N1 modell aljzatot csatlakoztasson Avvertenza Collegare soltanto il Cisco RPS modello PWR675 AC RPS N1 alla presa RPS Advarsel Koble bare Cisco RPS modell PWR675 AC RPS N1 til RPS stikkontakten Aviso Anexe o RPS Cisco modelo PWR675 AC RPS N1 apenas ao receptáculo RPS Advertencia Sólo conecte el Ci...

Страница 178: ...âbles pendant un orage Warnung Arbeiten Sie nicht am System und schließen Sie keine Kabel an bzw trennen Sie keine ab wenn es gewittert Figyelem Villámlás közben ne dolgozzon a rendszeren valamint ne csatlakoztasson és ne húzzon ki kábeleket Avvertenza Non lavorare sul sistema o collegare oppure scollegare i cavi durante un temporale con fulmini Advarsel Utfør aldri arbeid på systemet eller koble ...

Страница 179: ...oitus Lue asennusohjeet ennen järjestelmän yhdistämistä virtalähteeseen Attention Avant de brancher le système sur la source d alimentation consulter les directives d installation Warnung Vor dem Anschließen des Systems an die Stromquelle die Installationsanweisungen lesen Figyelem Mielõtt áramforráshoz csatlakoztatná a rendszert olvassa el az üzembe helyezési útmutatót Avvertenza Consultare le is...

Страница 180: ...du kopplar systemet till strömförsörjningsenheten Warning The plug socket combination must be accessible at all times because it serves as the main disconnecting device Waarschuwing De combinatie van de stekker en het elektrisch contactpunt moet te allen tijde toegankelijk zijn omdat deze het hoofdmechanisme vormt voor verbreking van de aansluiting Varoitus Pistoke liitinkohta toimii pääkatkaisume...

Страница 181: ...na presa deve essere sempre accessibile poiché viene utilizzato come dispositivo di scollegamento principale Advarsel Kombinasjonen støpsel uttak må alltid være tilgjengelig ettersom den fungerer som hovedfrakoplingsenhet Aviso A combinação ficha tomada deverá ser sempre acessível porque funciona como interruptor principal Advertencia El conjunto de clavija y toma ha de encontrarse siempre accesib...

Страница 182: ...smaatregelen nemen om ervoor te zorgen dat het toestel stabiel blijft De onderstaande richtlijnen worden verstrekt om uw veiligheid te verzekeren Dit toestel dient onderaan in het rek gemonteerd te worden als het toestel het enige in het rek is Wanneer u dit toestel in een gedeeltelijk gevuld rek monteert dient u het rek van onderen naar boven te laden met het zwaarste onderdeel onderaan in het re...

Страница 183: ...ellen daß das System stabil bleibt Die folgenden Richtlinien sollen zur Gewährleistung Ihrer Sicherheit dienen Wenn diese Einheit die einzige im Gestell ist sollte sie unten im Gestell angebracht werden Bei Anbringung dieser Einheit in einem zum Teil gefüllten Gestell ist das Gestell von unten nach oben zu laden wobei das schwerste Bauteil unten im Gestell anzubringen ist Wird das Gestell mit Stab...

Страница 184: ... den befinner seg i et kabinett Vær nøye med at systemet er stabilt Følgende retningslinjer er gitt for å verne om sikkerheten Denne enheten bør monteres nederst i kabinettet hvis dette er den eneste enheten i kabinettet Ved montering av denne enheten i et kabinett som er delvis fylt skal kabinettet lastes fra bunnen og opp med den tyngste komponenten nederst i kabinettet Hvis kabinettet er utstyr...

Страница 185: ...ior colocando el equipo más pesado en la parte inferior Si el bastidor dispone de dispositivos estabilizadores instalar éstos antes de montar o proceder al mantenimiento del equipo instalado en el bastidor Varning För att undvika kroppsskada när du installerar eller utför underhållsarbete på denna enhet på en ställning måste du vidta särskilda försiktighetsåtgärder för att försäkra dig om att syst...

Страница 186: ...mum recommended ambient temperature of 113 F 45 C To prevent airflow restriction allow at least 3 inches 7 6 cm of clearance around the ventilation openings Waarschuwing Om oververhitting van de schakelaar te voorkomen mag u die niet bedienen in een ruimte die de maximale aanbevolen omgevingstemperatuur van 113 F 45 C overschrijdt Om beperking van de luchtstroom te voorkomen dient u ten minste 3 i...

Страница 187: ...Belüftungsöffnungen herum einzuhalten Figyelem A túlmelegedés megelõzése végett ne üzemeltesse a kapcsolót olyan területen ahol a hõmérséklet meghaladja a 45 C maximális ajánlott környezeti hõmérsékletet A megfelelõ légáramlás biztosítása érdekében a szellõzõnyílások körül hagyjon szabadon legalább 7 6 cm helyet Avvertenza Per evitare il surriscaldamento dell interruttore non usare l apparecchiatu...

Страница 188: ...ulgadas de espacio muerto alrededor de la rejilla de ventilación Varning För att undvika överhettning av strömbrytaren skall den inte användas i utrymme vars temperatur överskrider den maximalt rekommenderade omgivningstemperaturen 45 C Kontrollera att det finns minst 7 6 cm fritt utrymme runt ventilationsöppningarna så att luftflödet inte begränsas Warning Unplug the power cord before you work on...

Страница 189: ...em Húzza ki a tápkábelt mielõtt egy olyan készüléken kezd el dolgozik amelynek nincs ki bekapcsoló gombja Avvertenza Prima di lavorare su un sistema che non è dotato di un interruttore on off scollegare il cavo di alimentazione Advarsel Før det skal utføres arbeid på et system som ikke har en av på bryter skal strømledningen trekkes ut Aviso Antes de começar a trabalhar num sistema que não possua ...

Страница 190: ...g Dieses Gerät muß geerdet werden Stellen Sie sicher daß das Host Gerät während des normalen Betriebs an Erde gelegt ist Figyelem A készüléket védõföldeléssel kell ellátni Gyõzõdjön meg róla hogy a készülék normál használat során csatlakozik a földhöz Avvertenza Questa apparecchiatura deve essere collegata a massa Accertarsi che il dispositivo host sia collegato alla massa di terra durante il norm...

Страница 191: ...ementen Varoitus Tämä tuote on hävitettävä kansallisten lakien ja määräysten mukaisesti Attention La mise au rebut ou le recyclage de ce produit sont généralement soumis à des lois et ou directives de respect de l environnement Renseignez vous auprès de l organisme compétent Warnung Die Entsorgung dieses Produkts sollte gemäß allen Bestimmungen und Gesetzen des Landes erfolgen Figyelem A készülék ...

Страница 192: ...ntos nacionais Advertencia Al deshacerse por completo de este producto debe seguir todas las leyes y reglamentos nacionales Varning Vid deponering hanteras produkten enligt gällande lagar och bestämmelser Warning When installing the unit always make the ground connection first and disconnect it last Waarschuwing Bij de installatie van het toestel moet de aardverbinding altijd het eerste worden gem...

Страница 193: ...se közben mindig a földelõvezetéket kell elsõként csatlakoztatni és azt kell utolsóként leválasztani Avvertenza In fase di installazione dell unità eseguire sempre per primo il collegamento a massa e disconnetterlo per ultimo Advarsel Når enheten installeres må jordledningen alltid tilkobles først og frakobles sist Aviso Ao instalar a unidade a ligação à terra deverá ser sempre a primeira a ser li...

Страница 194: ...talliesineet kuumenevat kun ne ovat yhteydessä sähkövirran ja maan kanssa ja ne voivat aiheuttaa vakavia palovammoja tai hitsata metalliesineet kiinni liitäntänapoihin Attention Avant d accéder à cet équipement connecté aux lignes électriques ôter tout bijou anneaux colliers et montres compris Lorsqu ils sont branchés à l alimentation et reliés à la terre les objets métalliques chauffent ce qui pe...

Страница 195: ...til polene Aviso Antes de trabalhar em equipamento que esteja ligado a linhas de corrente retire todas as jóias que estiver a usar incluindo anéis fios e relógios Os objectos metálicos aquecerão em contacto com a corrente e em contacto com a ligação à terra podendo causar queimaduras graves ou ficarem soldados aos terminais Advertencia Antes de operar sobre equipos conectados a líneas de alimentac...

Страница 196: ...seta asennuspohjaa minkään muun laitteen päälle Asennuspohja voi pudotessaan aiheuttaa vaikean ruumiinvamman tai laitevaurion Avertissement Ne placez pas ce châssis sur un autre appareil En cas de chute il pourrait provoquer de graves blessures corporelles et d importants dommages Achtung Das Gehäuse nicht auf andere Geräte stellen Wenn das Gehäuse herunterfällt besteht Gefahr schwerer Personenver...

Страница 197: ...s no equipamento Atención No apilar los chasis sobre ningún otro equipo Si el chasis se cae al suelo puede causar graves lesiones físicas y daños al equipo Varning Placera inte chassit ovanpå annan utrustning Om chassit faller kan allvarlig kroppsskada såväl som skada på utrustningen uppstå Warning To comply with safety regulations mount switches on a wall with the front panel facing up Waarschuwi...

Страница 198: ...gy szerelje a falra hogy az elõlapjuk felfelé nézzen Avvertenza In conformità ai regolamenti di sicurezza installare i dispositivi switch a muro con il pannello frontale rivolto in su Advarsel For å etterkomme sikkerhetsreglene skal brytere monteres på en vegg med frontpanelet vendt opp Aviso Para cumprir com os regulamentos de segurança faça a montagem de switches em uma parede com o painel front...

Страница 199: ...e connecteur RPS à l arrière du commutateur Warnung Wenn keine redundante Stromversorgung RSV an den Schalter angeschlossen ist eine RSV Steckerabdeckung an der Rückseite des Schalters anbringen Figyelem Ha a kapcsolóhoz nem csatlakozik redundáns tápegység RPS az RPS csatlakozófedelét a kapcsoló hátuljára szerelje fel Avvertenza Se un sistema RPS Redundant Power System di alimentazione ridondante ...

Страница 200: ... should be allowed to install replace or service this equipment Waarschuwing Deze apparatuur mag alleen worden geïnstalleerd vervangen of hersteld door bevoegd geschoold personeel Varoitus Tämän laitteen saa asentaa vaihtaa tai huoltaa ainoastaan koulutettu ja laitteen tunteva henkilökunta Attention Il est vivement recommandé de confier l installation le remplacement et la maintenance de ces équip...

Страница 201: ...nte da un personale competente Advarsel Bare opplært og kvalifisert personell skal foreta installasjoner utskiftninger eller service på dette utstyret Aviso Apenas pessoal treinado e qualificado deve ser autorizado a instalar substituir ou fazer a revisão deste equipamento Advertencia Solamente el personal calificado debe instalar reemplazar o utilizar este equipo Varning Endast utbildad och kvali...

Страница 202: ...ide 78 11157 05 Varoitus Luokan 1 lasertuote Attention Produit laser de classe 1 Warnung Laserprodukt der Klasse 1 Figyelem Class 1 besorolású lézeres termék Avvertenza Prodotto laser di Classe 1 Advarsel Laserprodukt av klasse 1 Aviso Produto laser de classe 1 Advertencia Producto láser Clase I Varning Laserprodukt av klass 1 ...

Страница 203: ...n de laserstraal Varoitus Vältä säteelle altistumista Attention Éviter toute exposition directe au faisceau Warnung Schützen Sie sich vor direkter Laserbestrahlung Figyelem Kerülje a lézersugárral való közvetlen érintkezést Avvertenza Evitare l esposizione diretta al raggio laser Advarsel Unngå direkte eksponering til laserstrålen Aviso Evite exposição a raios laser Advertencia Evite la exposición...

Страница 204: ...s à l œil Ne regardez jamais directement les faisceaux laser à l œil nu ni d ailleurs avec des instruments optiques Warnung Unterbrochene Fasern oder Steckerverbindungenkönnen unsichtbare Laserstrahlung abgeben Blicken Sie weder mit bloßem Auge noch mit optischen Instrumenten direkt in Laserstrahlen Figyelem A nem csatlakoztatott üvegszálak és csatlakozók láthatatlan lézersugárzást bocsáthatnak ki...

Страница 205: ...n i strålar och titta aldrig direkt på dem med hjälp av optiska instrument Warning The Catalyst 2950G 24 EI DC contains no field replaceable units FRUs Do not open the chassis or attempt to remove or replace any components For information about obtaining service for this unit contact your reseller or Cisco sales representative Waarschuwing De Catalyst 2950G 24 EI DC bevat geen FRU s field replacea...

Страница 206: ...yst 2950G 24 EI DC készülék nem tartalmaz helyszínen cserélhetõ részegységeket Ne nyissa fel a házat és ne próbálja meg eltávolítani vagy kicserélni semelyik alkatrészt A készülékhez igénybe vehetõ karbantartási szolgáltatásokról viszonteladójától vagy Cisco értékesítési képviselõjétõl kérhet információt Avvertenza Catalyst 2950G 24 EI DC non ha componenti sostituibili sul posto FRU Non aprite lo ...

Страница 207: ...eplaceable Units FRU No abra el chasis ni intente reemplazar componentes Para más información sobre cómo reparar este aparato póngase en contacto con su distribuidor o representante de Cisco Varning Catalyst 2950G 24 EI DC innehåller inte några enheter som kan bytas ut på fältet Öppna inte chassit och försök inte heller att ta bort eller byta ut några delar Kontakta återförsäljaren eller represent...

Страница 208: ...orjattavia laitteita Runkoa ei saa avata eikä osia saa yrittää poistaa tai korjata Laitteen huoltoa koskevia tietoja saa jälleenmyyjältä tai Ciscon myyntiedustajalta Attention Le Catalyst 2950ST 24 LRE 997 ne dispose pas d unités remplaçables sur site FRU Il est recommandé de ne pas ouvrir le châssis ni de retirer ou remplacer des composants Pour plus de détails sur la maintenance de cette unité c...

Страница 209: ...utføres service på enheten Aviso O interruptor Catalisador 2950ST 24 LRE 997 não contém nenhuma unidade substituível em campo Não abrir o chassis ou tentar remover ou substituir quaisquer componentes Para mais informações sobre a manutenção desta unidade contactar o seu revendedor ou um representante de vendas da Cisco Advertencia El Catalyst 2950ST 24 LRE 997 no contiene componentes reemplazables...

Страница 210: ...iaal instrument een slot en sleutel of een ander veiligheidsmiddel Varoitus Tämä laite on tarkoitettu asennettavaksi paikkaan johon pääsy on rajoitettua Tällaiseen paikkaan pääsee vain erikoistyökalua lukkoon sopivaa avainta tai jotakin muuta turvalaitetta käyttämällä Attention Cet appareil est à installer dans des zones d accès réservé L accès à une zone d accès réservé n est possible qu en utili...

Страница 211: ...begrenset tilgang Et begrenset tilgangsområde kan bare nås ved hjelp av et spesielt verktøy lås og nøkkel eller andre sikkerhetsanordninger Aviso Esta unidade foi concebida para instalação em áreas de acesso restrito Uma área de acesso restrito é uma área à qual apenas tem acesso o pessoal de serviço autorizado que possua uma ferramenta chave e fechadura especial ou qualquer outra forma de seguran...

Страница 212: ...ntral les câbles Ethernet doivent être impérativement blindés Warnung Ethernet Kabel müssen abgeschirmt werden wenn sie in einer Zentrale eingesetzt werden Figyelem Az Ethernet kábeleket árnyékolással kell ellátni ha azokat helyi központban használják Avvertenza I cavi Ethernet devono essere schermati se utilizzati in un ambiente di ufficio centrale Advarsel Ethernet kabler skal være skjermet når ...

Страница 213: ...s geschakeld kiest u op het schakelbord de stroomverbreker die het gelijkstroomcircuit bedient draait de stroomverbreker naar de UIT positie en plakt de schakelaarhendel van de stroomverbreker met plakband in de UIT positie vast Varoitus Varmista että tasavirtapiirissä ei ole virtaa ennen maadoitus tai virtajohtojen kytkemistä asennuspohjaan tai ennen niiden irrottamista Varmistaaksesi että virta ...

Страница 214: ...etben leragasztja Avvertenza Prima di collegare o distaccare i cavi elettrici o di messa a terra dallo chassis assicuratevi che il circuito DC non sia alimentato Per verificare che tutta l alimentazione sia scollegata OFF individuare l interruttore automatico sul quadro strumenti che alimenta il circuito CC mettere l interruttore in posizione OFF e fissarlo con nastro adesivo in tale posizione Adv...

Страница 215: ...alice el interruptor automático en el panel que alimenta el circuito de corriente continua cambie el interruptor automático a la posición de apagado OFF y sujete con cinta la palanca del interruptor automático en posición de apagado OFF Varning Innan du kopplar jord eller elledningar till eller från chassit måste du kontrollera att strömförsörjningen till likströmskretsen är bruten Kontrollera att...

Страница 216: ...on Pour éviter tout risque de choc électrique vérifiez que les câbles d alimentation secteur sont protégés par une gaine Aucun fil dénudé ne doit apparaître hors du bloc d alimentation du terminal Warnung Eine ungeschützte Kabelleitung von einer Gleichstrom Eingangsspannungsquelle kann schädliche Elektrizitätslevel führen Achten Sie darauf daß von dem Klemmleistenstecker aus kein ungeschütztes Ein...

Страница 217: ...entrada de DC se extende a partir da ficha da placa de terminais Advertencia Un cable desnudo de una fuente de entrada de alimentación de corriente directa DC puede conducir niveles de electricidad peligrosos Asegúrese de que ninguna parte del cable de la fuente de alimentación de DC de entrada sale del enchufe del bloque de terminal Varning En blottad trådledning från en likströmsförsörjningsenhe...

Страница 218: ... entretien comme défini par la réglementation AS NZS 3260 Clause 1 2 14 3 Service Personnel Warnung Dieses Gerät darf nur von Wartungspersonal gemäß AS NZS Definition 3260 Paragraph 1 2 14 3 Service Personnel installiert und gewartet werden Figyelem A készüléket az AS NZS 3260 elõírás 1 2 14 3 Service Personnel pontja értelmében csak hozzáértõ szakemberek helyezhetik üzembe és tarthatják karban Av...

Страница 219: ...nnel Warning Advertencia Este equipo se debe instalar y mantener solamente por personal de servicio según definido por AS NZS 3260 Cláusula 1 2 14 3 Service Personnel Varning Installation och underhåll av denna utrustning får endast utföras av servicepersonal enligt definition i AS NZS 3260 klausul 1 2 14 3 Service Personnel ...

Страница 220: ...Appendix D Translated Safety Warnings Service Personnel Warning D 46 Catalyst 2950 Desktop Switch Hardware Installation Guide 78 11157 05 ...

Страница 221: ...00BASE SX ports cable lengths 3 7 connecting to 3 36 to 3 38 connectors and cables B 6 described 2 11 illustrated 2 9 power levels fiber optic A 7 1000BASE T GBIC modules cable lengths 3 7 connecting to 3 47 to 3 48 connectors B 7 described 2 13 illustrated 3 27 installing 3 26 1000BASE X GBIC modules cable lengths 3 7 connecting to 3 45 to 3 46 connectors B 6 described 2 13 illustrated 3 26 insta...

Страница 222: ...10 cables continued crossover connecting to B 2 B 4 four twisted pair pinout 10 100 ports B 10 four twisted pair pinout 1000BASE T ports B 11 two twisted pair pinout B 9 GBIC 1000BASE T module 3 47 1000BASE X module 3 45 CWDM module 3 44 GigaStack module 3 48 problems solving 4 3 to 4 4 RJ 21 pinouts B 11 B 13 rollover B 14 straight through connecting to B 2 B 4 four twisted pair pinout 10 100 por...

Страница 223: ...alling Java plug in 1 13 Java plug in for the Solaris platform 1 15 CMS continued Java plug in for the Windows platform 1 15 operating systems and browsers supported 1 12 recommended platforms for web based management 1 12 Coarse Wave Division Multiplexing GBIC modules See CWDM GBIC modules command line interface See CLI configuration examples network 2 1 configuring ports 3 50 connecting to 10 10...

Страница 224: ...ecting to 1 3 RJ 45 to DB 25 terminal adapter pinouts B 16 RJ 45 to DB 9 adapter cable pinouts B 15 conventions command xvi document xvi crossover cable connecting to 10 100 1000 ports 3 34 10 100 ports 3 34 1000BASE T GBIC module ports 3 47 connectivity problems 4 4 pinout four twisted pair 10 100 ports B 10 four twisted pair 1000BASE T ports B 11 two twisted pair B 9 CWDM GBIC modules cable leng...

Страница 225: ...rnet cable warning C 1 D 38 examples network configuration 2 1 exposed DC power wire warning C 8 D 42 F fan problems solving 4 5 features 2 1 to 2 3 feedback to Cisco Systems web xxvi fiber optic port specifications A 7 front panel 10 100 1000 ports 2 10 to 2 11 10 100 ports 2 9 to 2 10 1000BASE SX ports 2 11 100BASE FX ports 2 11 clearance 3 7 described 2 4 GBIC module ports 2 13 to 2 14 illustra...

Страница 226: ... equipment warning 3 3 C 2 D 16 H HP OpenView 2 32 humidity A 2 to A 6 I installation assigning the IP Address 1 6 cable guide 3 22 connecting to an ethernet port 1 10 connecting to a power source 1 5 connecting to LRE ports 3 38 to 3 44 desk mount 3 22 guidelines 3 7 mounting on a wall 3 25 package contents 3 8 to 3 36 pre installation information and guidelines 3 2 to 3 6 rack mount 3 10 to 3 22...

Страница 227: ... SPEED 2 22 2 23 2 24 status STAT 2 22 2 24 system 2 20 utilization UTIL 2 22 2 23 lightning activity warning 3 4 D 4 Long Reach Ethernet ports See LRE ports LRE ports and POTS splitters 3 39 cables RJ 21 3 40 connecting to 3 38 to 3 44 connection guidelines 3 38 described 2 12 illustrated 2 7 LEDs 2 22 2 24 problems solving 4 6 See also RJ 21 connector LRE uplink ports 2 11 M main disconnecting d...

Страница 228: ...r B 16 RJ 45 to DB 9 adapter cable B 15 pinouts continued crossover cables four twisted pair 10 100 ports B 10 four twisted pair 1000BASE T ports B 11 two twisted pair B 9 DB 25 adapters B 16 RJ 21 connector B 11 B 13 RJ 45 to DB 25 terminal adapter B 16 RJ 45 to DB 9 adapter cable B 15 RJ 45 to DB 9 PC adapter cable B 15 straight through cables four twisted pair 10 100 ports B 9 four twisted pair...

Страница 229: ...ack mounting bracket mounting points 3 12 to 3 20 procedures 3 10 to 3 22 warning 3 10 D 8 to D 12 rear panel clearance 3 7 console port connector 2 31 described 2 27 to 2 29 illustrated 2 28 to 2 29 power connectors 2 29 to 2 31 Redundant Power System See RPS regulatory statements EMC 3 4 to 3 6 related publications xxiii to xxv restricted access area warning C 1 D 36 RJ 21 connector pinouts B 11...

Страница 230: ... to A 9 speed LED 2 22 2 23 2 24 stacking the chassis warning 3 3 D 22 status LED 2 22 2 24 straight through cable connecting to 10 100 1000 ports 3 34 10 100 ports 3 34 1000BASE T GBIC module ports 3 47 straight through cable continued connectivity problems 4 4 pinout four twisted pair 10 100 ports B 9 four twisted pair 1000BASE T ports B 10 two twisted pair B 8 SunNet Manager 2 32 system LED 2 2...

Страница 231: ...lation Guide 78 11157 05 Index U uplink ports LRE 2 11 URLs Cisco xxv utilization bandwidth 2 23 to 2 27 LED 2 22 2 23 V verifying package contents 3 8 to 3 36 W warnings DC power C 1 C 2 C 5 defined xvii installation 3 2 to 3 4 translated D 1 to D 45 ...

Страница 232: ...Index IN 12 Catalyst 2950 Desktop Switch Hardware Installation Guide 78 11157 05 ...

Отзывы:

Нет отзывов

Похожие инструкции для 2950 - Catalyst Switch

Parkside POF 1200 A1 Operation Manual preview
POF 1200 A1
Бренд: Parkside Страницы: 55
Parkside POF 1200 A1 Operation And Safety Notes preview
POF 1200 A1
Бренд: Parkside Страницы: 34
T&D RTR-50 User Manual preview
RTR-50
Бренд: T&D Страницы: 122
Vonets MINI300 Quick Setting Manual preview
MINI300
Бренд: Vonets Страницы: 8
Banner Sure Cross DX70 Instruction Manual preview
Sure Cross DX70
Бренд: Banner Страницы: 35
Lanner NCA-4035 User Manual preview
NCA-4035
Бренд: Lanner Страницы: 109
Kasda LinkSmart KW6515 User Manual preview
LinkSmart KW6515
Бренд: Kasda Страницы: 31
SAB SABVISION NVR32 Quick Start Manual preview
SABVISION NVR32
Бренд: SAB Страницы: 29
B&B Electronics Elinx ESW200 Series Quick Start Manual preview
Elinx ESW200 Series
Бренд: B&B Electronics Страницы: 20
X-Micro IEEE 802.11b User Manual preview
IEEE 802.11b
Бренд: X-Micro Страницы: 49
Airlink101 AR325W Quick Installation Manual preview
AR325W
Бренд: Airlink101 Страницы: 13
IMC Networks iMcV-FiberLinX Operation Manual preview
iMcV-FiberLinX
Бренд: IMC Networks Страницы: 36
AOpen ISDN SOHO Router User Manual preview
ISDN SOHO Router
Бренд: AOpen Страницы: 89
Tripp Lite WEBCARDLX Owner'S Manual preview
WEBCARDLX
Бренд: Tripp Lite Страницы: 34
Extron electronics VERSATOOLS MTP User Manual preview
VERSATOOLS MTP
Бренд: Extron electronics Страницы: 19
Genexis FiberTwist XGS2410 Installation Manual preview
FiberTwist XGS2410
Бренд: Genexis Страницы: 7
LevelOne GSW-0890 Quick Installation Manual preview
GSW-0890
Бренд: LevelOne Страницы: 4
Hameg HM6050-2K Manual preview
HM6050-2K
Бренд: Hameg Страницы: 46

Бренды по названию

Популярные бренды

Загрузить еще бренды