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N

ETWORK

P

LANNING

2-4

Remote Connection with Fiber Cable

Fiber optic technology allows for longer cabling than any other media type.
A 1000BASE-LX SFP transceiver link can connect to a site up to 5 km
away. This allows the Gigabit Ethernet switch to serve as a collapsed
backbone, providing direct connectivity for a widespread LAN. A Gigabit
SFP transceiver can also be used for a high-speed connection between
floors in the same building, or to connect to other buildings in a campus
setting. The figure below illustrates a Gigabit Ethernet switch connecting
multiple segments with fiber cable..

Figure 2-3. Remote Connection with Fiber Cable

Server Farm

10/100 Mbps Segments

...

...

Remote Switch

Remote Switch

1000BASE-LX SMF
(5 kilometers)

Headquarters

1000BASE-SX MMF
(500 m)

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Содержание 8612T - annexe 1

Страница 1: ...g switching architecture Support for a redundant power unit Spanning Tree Protocol Up to six LACP or static 4 port trunks Layer 2 3 4 CoS support through four priority queues Full support for VLANs with GVRP IGMP multicast filtering and snooping Support for jumbo frames up to 9 KB Manageable via console Web SNMP RMON Installation Guide SMC8612T ...

Страница 2: ......

Страница 3: ...38 Tesla Irvine CA 92618 Phone 949 679 8000 TigerSwitch 10 100 1000 Installation Guide From SMC s Tiger line of feature rich workgroup LAN solutions July 2003 Pub 150200034900A ...

Страница 4: ...ed by implication or oth erwise under any patent or patent rights of SMC SMC reserves the right to change specifications at any time without notice Copyright 2003 by SMC Networks Inc 38 Tesla Irvine CA 92618 All rights reserved Printed in Taiwan Trademarks SMC is a registered trademark and EZ Switch TigerStack and TigerSwitch are trademarks of SMC Networks Inc Other product and company names are t...

Страница 5: ...service_warranty All products that are replaced become the property of SMC Replacement products may be either new or reconditioned Any replaced or repaired product carries either a 30 day limited warranty or the remainder of the initial warranty whichever is longer SMC is not responsible for any custom software or firmware configuration information or memory data of Customer contained in stored on...

Страница 6: ...SS OR OTHER FINANCIAL LOSS ARISING OUT OF OR IN CONNECTION WITH THE SALE INSTALLATION MAINTENANCE USE PERFORMANCE FAILURE OR INTERRUPTION OF ITS PRODUCTS EVEN IF SMC OR ITS AUTHORIZED RESELLER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES SOME STATES DO NOT ALLOW THE EXCLUSION OF IMPLIED WARRANTIES OR THE LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR CONSUMER PRODUCTS SO THE ABOVE LI...

Страница 7: ...e for RJ 45 connections Category 3 or greater for 10 Mbps connections Category 5 for 100 Mbps connections and Category 5 5e or 6 for 1000 Mbps Use 50 125 or 62 5 125 micron multimode fiber optic cable or 9 125 micron single mode fiber optic cable for SC or ST type connections Warnings 1 Wear an anti static wrist strap or take other suitable measures to prevent electro static discharge when handlin...

Страница 8: ...ccording to EN 61000 3 2 1995 Limitation of voltage fluctuation and flicker in low voltage supply system according to EN 61000 3 3 1995 Immunity Product family standard according to EN 55024 1998 Electrostatic Discharge according to EN 61000 4 2 1995 Contact Discharge 4 kV Air Discharge 8 kV Radio frequency electromagnetic field according to EN 61000 4 3 1996 80 1000 MHz with 1 kHz AM 80 Modulatio...

Страница 9: ...pan VCCI Class A Taiwan BSMI Class A Australia AS NZS 3548 1995 Class A SMC contact for products in Australia is SMC Communications Pty Ltd Suite 18 12 Tryon Road Lindfield NSW2070 Phone 61 2 94160437 Fax 61 2 94160474 ...

Страница 10: ...ort and fiber cable ends when they are powered on Ne regardez jamais le laser tant qu il est sous tension Ne regardez jamais directement le port TX Transmission à fibres optiques et les embouts de câbles à fibres optiques tant qu ils sont sous tension Niemals ein Übertragungslaser betrachten während dieses eingeschaltet ist Niemals direkt auf den Faser TX Anschluß und auf die Faserkabelenden schau...

Страница 11: ...itraum nicht benutzt sollten Sie es vom Stromnetz trennen Somit wird im Falle einer Überspannung eine Beschädigung vermieden 12 Durch die Lüftungsöffnungen dürfen niemals Gegenstände oder Flüssigkeiten in das Gerät gelangen Dies könnte einen Brand bzw elektrischen Schlag auslösen 13 Öffnen sie niemals das Gerät Das Gerät darf aus Gründen der elektrischen Sicherheit nur von authorisiertem Servicepe...

Страница 12: ...COMPLIANCES viii ...

Страница 13: ...ty 1 6 Performance 1 6 Management 1 7 2 Network Planning 2 1 Introduction to Switching 2 1 Application Examples 2 2 Collapsed Backbone 2 2 Central Wiring Closet 2 3 Remote Connection with Fiber Cable 2 4 Making VLAN Connections 2 5 Connectivity Rules 2 6 1000 Mbps Gigabit Ethernet Collision Domain 2 6 10 100 Mbps Ethernet Collision Domain 2 7 Application Notes 2 8 3 Installing the Switch 3 1 Selec...

Страница 14: ...3 5 Connecting to a Power Source 3 6 4 Making Network Connections 4 1 Connecting Network Devices 4 1 Twisted Pair Devices 4 1 Cabling Guidelines 4 2 Connecting to PCs Servers Hubs and Switches 4 2 Wiring Closet Connections 4 4 Fiber Optic Devices 4 5 ...

Страница 15: ...1000BASE T Cable Requirements B 4 Cable Testing for Existing Category 5 Cable B 4 Adjusting Existing Category 5 Cabling B 4 Console Port Pin Assignments B 5 DB 9 Port Pin Assignments B 5 Console Port to 9 Pin DTE Port on PC B 5 Console Port to 25 Pin DTE Port on PC B 6 C Specifications C 1 Physical Characteristics C 1 Base Unit C 1 Switch Features C 2 Management Features C 3 Standards C 4 Complian...

Страница 16: ...TABLE OF CONTENTS x ...

Страница 17: ... Switch Architecture The switch employs a wire speed non blocking switching fabric This permits simultaneous wire speed transport of multiple packets at low latency on all ports This switch also features full duplex capability on all ports which effectively doubles the bandwidth of each connection Redundant Power Socket Power Socket Port Status Indicators Console Port 1000BASE T SFP Ports 10 100 1...

Страница 18: ...It provides an RS 232 serial port DB 9 connector on the front panel for out of band management A PC may be connected to this port for configuration and monitoring out of band via a null modem cable See Appendix B for wiring options This switch provides a wide range of advanced performance enhancing features Port based and tagged VLANs plus support for automatic GVRP VLAN registration and IGMP mult...

Страница 19: ...timum transmission mode half or full duplex and data rate 10 100 1000 Mbps can be selected automatically If a device connected to one of these ports does not support auto negotiation the communication mode of that port can be configured manually Each port also supports IEEE 802 3x auto negotiation of flow control so the switch can automatically prevent port buffers from becoming saturated SFP Slot...

Страница 20: ... 10 100 Mbps network connection Flashing indicates activity On Flashing Green Port has established a valid 1000 Mbps network connection Flashing indicates activity Off There is no valid link on the port SFP Transceivers Slots Ports 9 12 On Green Port has established a valid 100 Mbps network connection Off An SFP transceiver port has no valid link or there is no transceiver installed in the slot Th...

Страница 21: ...nal Redundant Power Unit RPU Figure 1 3 Power Supply Receptacles System Status LEDs LED Condition Status Power On Green The unit s internal power supply is operating normally On Red The unit s internal power supply has failed Off The unit has no power connected RPU On Green The redundant power supply is operating normally On Red The redundant power supply has failed Off No redundant power supply i...

Страница 22: ...can be configured manually Independent RJ 45 10 100 1000BASE T ports with auto MDI MDI X pinout selection Unshielded UTP cable supported on all RJ 45 ports Category 3 or better for 10 Mbps connections Category 5 or better for 100 Mbps connections and Category 5 5e or 6 for 1000 Mbps connections IEEE 802 3 Ethernet 802 3u Fast Ethernet 802 3z and 802 3ab Gigabit Ethernet compliance ensures compatib...

Страница 23: ...ges switch in band or out of band Supports Telnet SNMP RMON and Web based interface Simple network management protocol SNMP based network management via an SNMP management console application Command line management through four in band Telnet sessions and an out of band RS 232 console port VT100 RADIUS and TACACS access control Software upload via TFTP Supports BOOTP and DHCP for IP address assig...

Страница 24: ...ABOUT THE TIGERSWITCH 10 100 1000 1 8 ...

Страница 25: ...r or hub can be attached directly to a switched port And by using full duplex mode the bandwidth of the dedicated segment can be doubled to maximize throughput When networks are based on repeater hub technology the maximum distance between end stations is limited For Ethernet there may be up to four hubs between any pair of stations for Fast Ethernet the maximum is two This is known as the hop cou...

Страница 26: ...rect full duplex connections for up to 12 workstations or servers When the time comes for further network expansion you can easily build on this basic configuration by adding Fast Ethernet or Gigabit Ethernet links directly to one or more workgroup switches In the figure below this switch is operating as a collapsed backbone for a small LAN It is providing dedicated 20 Mbps full duplex connections...

Страница 27: ...node increasing overall bandwidth and throughput In the figure below the 1000BASE T RJ 45 ports on the switch are providing 2 Gbps full duplex connections for up to 12 local segments In addition the switch is also connecting remote servers over fiber optic cable at 2 Gbps Figure 2 2 Central Wiring Closet 10 100 Mbps Segments 10 100 1000 Switch Server Farm 9 11 12 10 1 3 5 7 9 2 4 6 8 10 12 11 ...

Страница 28: ...connecting multiple segments with fiber cable Figure 2 3 Remote Connection with Fiber Cable Server Farm 10 100 Mbps Segments Remote Switch Remote Switch 1000BASE LX SMF 5 kilometers Headquarters 1000BASE SX MMF 500 m 1 13 7 19 2 14 8 20 3 15 9 21 4 16 10 22 5 17 11 23 6 18 12 24 25 26 25 26 1 2 3 4 5 6 13 14 15 16 17 18 7 8 9 10 11 12 19 20 21 22 23 24 Clear Reset Self Test Self Test Fan Status Fa...

Страница 29: ... a separate connection for each VLAN group This approach is however inconsistent with the Spanning Tree Protocol which can easily segregate ports that belong to the same VLAN When VLANs cross separate switches you need to use VLAN tagging This allows you to assign multiple VLAN groups to the trunk ports that is tagged ports connecting different switches Figure 2 4 Making VLAN Connections Note When...

Страница 30: ... Maximum Cable Length 62 5 125 micron 160 MHz km 2 220 m 7 722 ft 200 MHz km 2 275 m 7 902 ft 50 125 micron 400 MHz km 2 500 m 7 1641 ft 500 MHz km 2 550 m 7 1805 ft Maximum Fiber Optic Cable Distance for 1000BASE LX Fiber Size Fiber Bandwidth Maximum Cable Length 9 125 micron N A 2 m 10 km 7 32808 ft Maximum Cable Distance for 1000BASE T Type Connector Maximum Cable Length Cat 5 5e or 6 100 ohm U...

Страница 31: ...ble Type Max Cable Length 10BASE T Twisted Pair Category 3 or better 100 m 328 ft 100BASE TX Category 5 or better 100 ohm UTP or STP 100 m 328 ft 100BASE FX Multimode 50 125 or 62 5 125 micron core multimode fiber MMF 2 km 1 24 miles 100BASE FX Single Mode 9 125 micron core single mode fiber SMF 20 km 12 43 miles ...

Страница 32: ... Otherwise back pressure jamming signals may degrade overall performance for the segment attached to the hub 3 For network applications that require routing between dissimilar network types you can attach this switch directly to a router 4 As a general rule the length of Gigabit fiber optic cable for a single switched link should not exceed 550 m 1805 ft for 1000BASE SX multimode fiber or 5 km 164...

Страница 33: ...nsing provide adequate space approximately two inches on all sides for proper air flow be accessible for installing cabling and maintaining the devices allow the status LEDs to be clearly visible Make sure twisted pair cable is always routed away from power lines fluorescent lighting fixtures and other sources of electrical interference such as radios transmitters etc Make sure that a separate gro...

Страница 34: ...g Kit containing two brackets and eight screws for attaching the brackets to the switch Power Cord either US Continental Europe or UK RS 232 console cable This Installation Guide Management Guide SMC Warranty Registration Card be sure to complete and return to SMC Optional Rack Mounting Equipment If you plan to rack mount the switch be sure to have the following equipment available Four mounting s...

Страница 35: ...e within a rack assembly may be higher than the ambient room temperature check that the rack environment temperature is within the specified operating temperature range See page C 2 Mechanical Loading Do not place any equipment on top of a rack mounted unit Circuit Overloading Be sure that the supply circuit to the rack assembly is not overloaded Grounding Rack mounted equipment should be properly...

Страница 36: ...e using the screws provided in the Bracket Mounting Kit Figure 3 1 Attaching the Brackets 2 Mount the device in the rack using four rack mounting screws not provided Figure 3 2 Installing the Switch in a Rack 9 11 12 10 1 3 5 7 9 2 4 6 8 10 12 11 9 11 12 10 1 3 5 7 9 2 4 6 8 10 12 11 ...

Страница 37: ...he bottom of the first switch Figure 3 3 Attaching the Adhesive Feet 2 Set the device on a flat surface near an AC power source making sure there are at least two inches of space on all sides for proper air flow 3 If installing a single switch only go to Connecting to a Power Source at the end of this chapter 4 If installing multiple switches attach four adhesive feet to each one Place each device...

Страница 38: ...n socket Note For International use you may need to change the AC line cord You must use a line cord set that has been approved for the receptacle type in your country 3 Check the front panel LEDs as the device is powered on to be sure the Power LED is lit If not check that the power cable is correctly plugged in 4 If you have purchased a Redundant Power Unit connect it to the device and to an AC ...

Страница 39: ...E SX 1000BASE LX or 1000BASE LH SFP transceivers Twisted Pair Devices Each device requires an unshielded twisted pair UTP cable with RJ 45 connectors at both ends For 1000BASE T connections Category 5 5e or 6 recommended cable is required with all four wire pairs connected You should also test the cable installation for IEEE 802 3ab compliance See 1000BASE T Cable Requirements on page B 4 For 100B...

Страница 40: ... is disabled for an RJ 45 port the auto MDI MDI X pin signal configuration is also disabled See Appendix B for further information on cabling Connecting to PCs Servers Hubs and Switches Caution Do not plug a phone jack connector into an RJ 45 port This will damage the switch Use only twisted pair cables with RJ 45 connectors that conform to FCC standards 1 Attach one end of a twisted pair cable se...

Страница 41: ...le does not exceed 100 meters 328 ft in length Note 1 When connected to a shared collision domain such as a hub with multiple workstations switch ports must be set to half duplex mode 2 Avoid using flow control on a port connected to a hub unless it is actually required to solve a problem Otherwise back pressure jamming signals may degrade overall performance for the segment attached to the hub 3 ...

Страница 42: ...of a patch cable to an available port on the switch and the other end to the patch panel 2 If not already in place attach one end of a cable segment to the back of the patch panel where the punch down block is located and the other end to a modular wall outlet 3 Label the cables to simplify future troubleshooting Figure 4 2 Wiring Closet Connections Equipment Rack side view SMC Switch Patch Panel ...

Страница 43: ... optic cable You should never look directly at a transmit port when it is powered on 1 Check that the fiber terminators are clean You can clean the cable plugs by wiping them gently with a clean tissue or cotton ball moistened with a little ethanol Dirty fiber terminators on fiber cables will impair the quality of the light transmitted through the cable and lead to degraded performance on the port...

Страница 44: ...MAKING NETWORK CONNECTIONS 4 6 ...

Страница 45: ...D is Red Internal power supply has failed Contact SMC Technical Support Link LED is Off Verify that the switch and attached device is powered on Be sure the cable is plugged into both the switch and corresponding device Verify that the proper cable type is used and its length does not exceed specified limits Check the adapter on the attached device and cable connections for possible defects Replac...

Страница 46: ... you are sure that all the other components are functioning properly In Band Access You can access the management agent in the switch from anywhere within the attached network using Telnet a Web browser or other network management software such as EliteView However you must first configure the switch with a valid IP address subnet mask and default gateway If you have trouble establishing a link to...

Страница 47: ... 9 125 micron SMF 10 km 6 2 miles LC 1000BASE ZX 9 125 micron SMF 70 100 km 43 5 62 1 miles LC 1000BASE T Cat 5 5e 100 ohm UTP 100 m 328 ft RJ 45 1000BASE SX Fiber Specifications Fiber Diameter Fiber Bandwidth Maximum Cable Length 62 5 125 micron MMF 160 MHz km 2 220 m 7 722 ft 200 MHz km 2 275 m 7 902 ft 50 125 micron MMF 400 MHz km 2 500 m 7 1641 ft 500 MHz km 2 550 m 7 1805 ft 1000BASE LX Fiber...

Страница 48: ... both ends of the cable Caution Each wire pair must be attached to the RJ 45 connectors in a specific orientation See Cabling Guidelines on page 4 2 for an explanation Figure B 1 illustrates how the pins on the RJ 45 connector are numbered Be sure to hold the connectors in the same orientation when attaching the wires to the pins Figure B 1 RJ 45 Connector Pin Numbers 1000BASE ZX Fiber Specificati...

Страница 49: ...rts require that all four pairs of wires be connected Note that for 1000BASE T operation all four pairs of wires are used for both transmit and receive Use 100 ohm Category 5 or 5e unshielded twisted pair UTP or shielded twisted pair STP cable for 1000BASE T connections Also be sure that the length of any twisted pair connection does not exceed 100 meters 328 feet Pin MDI MDI X 1 Bi directional Da...

Страница 50: ...sts for Attenuation Near End Crosstalk NEXT and Far End Crosstalk FEXT This cable testing information is specified in the ANSI TIA EIA TSB 67 standard Additionally cables must also pass test parameters for Return Loss and Equal Level Far End Crosstalk ELFEXT These tests are specified in the ANSI TIA EIA TSB 95 Bulletin The Additional Transmission Performance Guidelines for 100 Ohm 4 Pair Category ...

Страница 51: ...ssignments used to connect to the serial port are provided in the following tables Figure B 2 DB 9 Console Port Pin Numbers DB 9 Port Pin Assignments Console Port to 9 Pin DTE Port on PC EIA Circuit CCITT Signal Description Switch s DB9 DTE Pin PC DB9 DTE Pin BB 104 RxD Received Data 2 2 BA 103 TxD Transmitted Data 3 3 AB 102 SGND Signal Ground 5 5 No other pins are used Switch s 9 Pin Serial Port...

Страница 52: ...CABLES B 6 Console Port to 25 Pin DTE Port on PC Switch s 9 Pin Serial Port Null Modem PC s 25 Pin DTE Port 2 RXD TXD 2 TXD 3 TXD RXD 3 RXD 5 SGND SGND 7 SGND No other pins are used ...

Страница 53: ...J 45 connector auto MDI X 10BASE T RJ 45 100 ohm UTP cable Categories 3 or better 100BASE TX RJ 45 100 ohm UTP cable Category 5 or better 10 100 1000BASE T RJ 45 100 ohm Category 5 5e or 6 UTP or STP cable Buffer Architecture 32 Mbyte per system Switching Database 32K MAC address entries LEDs System Power Diag RPU Port Link Act FDX Weight 4 36 kg 9 6 lbs Size 44 0 x 35 4 x 4 3 cm 17 37 x 13 9 x 1 ...

Страница 54: ...upports connection for redundant DC power supply Power Consumption 48 Watts maximum Maximum Current 0 39 A 115 VAC 0 21 A 230 VAC Switch Features Spanning Tree Protocol Forwarding Mode Store and forward Flow Control Full Duplex IEEE 802 3x Half Duplex Back pressure Broadcast Storm Suppression Traffic throttled above a critical threshold VLAN Support Up to 255 groups port based or with 802 1Q VLAN ...

Страница 55: ...ware provided free Out of Band Management RS 232 DB 9 console port Software Loading TFTP or Web HTTP in band or XModem out of band MIB Support MIB II RFC 1213 Bridge MIB RFC 1493 Interfaces Evolution MIB RFC 2863 Ethernet MIB RFC 2665 Extended Bridge MIB RFC 2674 RMON MIB RFC 2819 Entity MIB RFC 2737 RADIUS authentication client MIB RFC 2618 SMC s private MIB RMON Support Groups 1 2 3 9 Statistics...

Страница 56: ... 3ac VLAN tagging IEEE 802 ad Link Aggregation Control Protocol IEEE 802 3x full duplex flow control ISO IEC 8802 3 SNMP RFC 1157 RMON RFC 1757 groups 1 2 3 9 RADIUS RFC 2618 Compliances CE Mark Emissions FCC Class A Industry Canada Class A EN55022 CISPR 22 Class A EN 61000 3 2 3 VCCI Class A C Tick AS NZS 3548 1995 Class A Immunity EN 61000 4 2 3 4 5 6 8 11 Safety CSA NRTL CSA 22 2 950 UL 1950 EN...

Страница 57: ...8612T 12 auto MDI MDI X 10 100 1000BASE T ports with 4 ports shared with 4 SFP transceiver slots SMCBGSLCX1 1 Port 1000BASE SX mini GBIC transceiver SMCBGLLCX1 1 Port 1000BASE LX mini GBIC transceiver SMCBGZLCX1 1 Port 1000BASE ZX mini GBIC transceiver SMCRPU600W Redundant power unit with cables supports one device ...

Страница 58: ...ORDERING INFORMATION D 2 ...

Страница 59: ...tion for Gigabit Ethernet over two strands of 9 125 micron core fiber cable 1000BASE T IEEE 802 3ab specification for Gigabit Ethernet over two pairs of Category 5 5e or 6 100 ohm UTP cable Auto Negotiation Signalling method allowing each node to select its optimum operational mode e g 10 100 or 1000 Mbps and half or full duplex based on the capabilities of the node to which it is connected Bandwi...

Страница 60: ...ction Ethernet A network communication system developed and standardized by DEC Intel and Xerox using baseband transmission CSMA CD access logical bus topology and coaxial cable The successor IEEE 802 3 standard provides for integration into the OSI model and extends the physical layer and media with repeaters and implementations that operate on fiber thin coax and twisted pair cable Fast Ethernet...

Страница 61: ...yer specifications IEEE 802 3ab Defines CSMA CD access method and physical layer specifications for 1000BASE T Gigabit Ethernet IEEE 802 3u Defines CSMA CD access method and physical layer specifications for 100BASE TX and 100BASE FX Fast Ethernet IEEE 802 3x Defines Ethernet frame start stop requests and timers used for flow control on full duplex links IEEE 802 3z Defines CSMA CD access method a...

Страница 62: ...ta between network nodes MIB An acronym for Management Information Base It is a set of database objects that contains information about the device MII Media Independent Interface the standard interface for Fast Ethernet similar to the AUI interface for traditional Ethernet Network Diameter Wire distance between two end stations in the same collision domain Redundant Power Unit RPU A backup power s...

Страница 63: ...ernet Protocol TCP IP Protocol suite that includes TCP as the primary transport protocol and IP as the network layer protocol UTP Unshielded twisted pair cable Virtual LAN VLAN A Virtual LAN is a collection of network nodes that share the same collision domain regardless of their physical location or connection point in the network A VLAN serves as a logical workgroup with no physical barriers all...

Страница 64: ...Glossary 6 ...

Страница 65: ... 2 2 collapsed backbone 2 2 remote connections with fiber 2 4 VLAN connections 2 3 B brackets attaching 3 4 Broadcast storm control 1 2 buffers saturation of 1 3 C cable lengths 2 6 2 7 specifications B 1 compliances EMC C 4 Immunity C 4 safety C 4 connectivity rules 10 Mbps 2 8 10 100 Mbps 2 7 1000 Mbps 2 6 console port 1 2 B 5 contents of package 3 2 cooling problems A 2 cord sets international ...

Страница 66: ... Diag 1 5 Power 1 5 problems A 1 RPU 1 5 limited warranty C 4 location requirements 3 1 M management agent 1 2 features 1 7 C 3 out of band 1 2 SNMP 1 2 Web based 1 2 MIB support C 3 mounting the switch in a rack 3 3 on a desktop or shelf 3 5 multimode fiber optic cables 4 5 N network connections 4 1 4 5 examples 2 2 null modem cable 1 2 O optional equipment D 1 optional redundant power unit 1 5 o...

Страница 67: ... port 1 2 site selelction 3 1 SNMP agent 1 2 Spanning Tree Protocol 2 5 specifications compliances C 4 environmental C 2 physical C 1 power C 2 standards compliance C 4 IEEE C 4 status LEDs 1 4 store and forward 1 2 surge suppressor using 3 1 switch architecture 1 1 switching introduction to 2 1 method 1 2 T tags VLAN 2 5 temperature within a rack 3 3 troubleshooting in band access A 2 power and c...

Страница 68: ...INDEX Index 4 ...

Страница 69: ......

Страница 70: ... 38 32 32 Fax 33 0 41 38 01 58 Italy 39 0 335 5708602 Fax 39 02 739 14 17 Benelux 31 33 455 72 88 Fax 31 33 455 73 30 Central Europe 49 0 89 92861 0 Fax 49 0 89 92861 230 Nordic 46 0 868 70700 Fax 46 0 887 62 62 Eastern Europe 34 93 477 4920 Fax 34 93 477 3774 Sub Saharian Africa 27 0126610232 Fax 27 11 314 9133 North West Africa 216 71236616 Fax 216 71751415 CIS 7 095 789 35 73 Fax 7 095 789 35 7...

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