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Nortel 1000BASE-LX Скачать руководство пользователя страница 23

Preface

23

Using the BayStack 420 10/100/1000 Switch

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Содержание 1000BASE-LX

Страница 1: ...Part No 209418 A May 2001 4401 Great America Parkway Santa Clara CA 95054 Using the BayStack 420 10 100 1000 Switch ...

Страница 2: ...use at DFARS 252 227 7013 Notwithstanding any other license agreement that may pertain to or accompany the delivery of this computer software the rights of the United States Government regarding its use reproduction and disclosure are as set forth in the Commercial Computer Software Restricted Rights clause at FAR 52 227 19 Statement of conditions In the interest of improving internal design opera...

Страница 3: ... BSMI Statement Canada Requirements Only Canadian Department of Communications Radio Interference Regulations This digital apparatus Baystack 420 Switch does not exceed the Class A limits for radio noise emissions from digital apparatus as set out in the Radio Interference Regulations of the Canadian Department of Communications Règlement sur le brouillage radioélectrique du ministère des Communic...

Страница 4: ...hird party the Software or any information about the operation design performance or implementation of the Software and user manuals that is confidential to Nortel Networks and its licensors however Licensee may grant permission to its consultants subcontractors and agents to use the Software at Licensee s facility provided they have agreed to use the Software only in accordance with the terms of ...

Страница 5: ...ng effective at the date of expiration of the Nortel Networks copyright those restrictions relating to use and disclosure of Nortel Networks confidential information shall continue in effect Licensee may terminate this license at any time The license will automatically terminate if Licensee fails to comply with any of the terms and conditions of the license Upon termination for any reason Licensee...

Страница 6: ...6 209418 A ...

Страница 7: ...rt connectors 27 LED display panel 28 Back panel 30 Cascade Up and Down connectors 30 Cooling fans 30 AC power receptacle 31 Features 34 Virtual Local Area Networks VLANs 34 Security 35 RADIUS based network security 37 MAC address based security 37 Flash memory storage 38 Switch software image storage 38 Configuration parameters storage 38 MultiLink Trunking 39 Port mirroring conversation steering...

Страница 8: ...0 Initial installation 50 Stack MAC address 50 Removing a unit from the stack 51 Stack configurations 51 Stack up configurations 51 Stack down configurations 52 IEEE 802 1Q VLAN workgroups 54 IEEE 802 1Q tagging 55 VLANs spanning multiple switches 60 VLANs spanning multiple 802 1Q tagged switches 60 VLANS spanning multiple untagged switches 61 Shared servers 63 VLAN workgroup summary 68 VLAN confi...

Страница 9: ...etup screen 94 Choosing a BootP request mode 96 SNMP Configuration screen 99 System Characteristics screen 100 Switch Configuration Menu screen 103 MAC Address Table screen 105 MAC Address Security Configuration Menu screen 107 MAC Address Security Port Configuration screen 111 MAC Address Security Port Lists screens 113 Port list syntax 115 Accelerator keys for repetitive tasks 116 MAC Address Se...

Страница 10: ...reen 158 Spanning Tree Switch Settings screen 161 TELNET Configuration screen 164 Software Download screen 166 LED Indications during the download process 169 Configuration File Download Upload screen 169 Requirements 172 Chapter 4 Troubleshooting 173 Interpreting the LEDs 173 Diagnosing and correcting problems 175 Normal power up sequence 176 Port connection problems 177 Autonegotiation modes 177...

Страница 11: ...185 1000BASE SX 185 1000BASE LX 186 1000BASE XD 188 1000BASE ZX 189 Handling safety and environmental guidelines 190 Appendix C Quick configuration for MultiLink Trunking 193 Appendix D Connectors and pin assignments 195 RJ 45 10BASE T 100BASE TX port connectors 195 MDI and MDI X devices 196 MDI X to MDI cable connections 197 MDI X to MDI X cable connections 197 DB 9 RS 232 D Console Comm Port con...

Страница 12: ...12 Contents 209418 A ...

Страница 13: ... 802 1Q tagging after port based VLAN assignment 58 Figure 15 802 1Q tag assignment 59 Figure 16 802 1Q tagging after 802 1Q tag assignment 59 Figure 17 VLANs spanning multiple 802 1Q tagged switches 60 Figure 18 VLANs spanning multiple untagged switches 61 Figure 19 Possible problems with VLANs and Spanning Tree Protocol 62 Figure 20 Multiple VLANs sharing resources 63 Figure 21 VLAN broadcast do...

Страница 14: ...3 Figure 45 MAC Address Table screen 106 Figure 46 MAC Address Security Configuration Menu screen 107 Figure 47 MAC Address Security Configuration screen 109 Figure 48 MAC Security Port Configuration screen 1 of 2 112 Figure 49 MAC Security Port Configuration screen 2 of 2 112 Figure 50 MAC Address Security Port Lists screens 114 Figure 51 MAC Address Security Port Lists screen 115 Figure 52 MAC A...

Страница 15: ...ng Tree Port Configuration screen 2 of 2 159 Figure 74 Spanning Tree Switch Settings screen 161 Figure 75 TELNET Configuration screen 164 Figure 76 Software Download screen for a BayStack 420 Switch stack 168 Figure 77 Configuration File Download Upload screen 170 Figure 78 LED display panel 174 Figure 79 Types of GBICs 184 Figure 80 Nortel label on a GBIC 184 Figure 81 Installing a GBIC 192 Figur...

Страница 16: ...16 Figures 209418 A ...

Страница 17: ...4 Table 14 MAC Address Table screen fields 106 Table 15 MAC Address Security Configuration Menu options 108 Table 16 MAC Address Security Configuration screen fields 109 Table 17 MAC Security Port Configuration screen fields 113 Table 18 MAC Address Security Port Lists screen fields 115 Table 19 MAC Address Security Table screen fields 119 Table 20 VLAN Configuration Menu options 121 Table 21 VLAN...

Страница 18: ...pload screen fields 171 Table 41 Parameters not saved to the configuration file 172 Table 42 BayStack 420 Switch LED descriptions 174 Table 43 Corrective actions 176 Table 44 Environmental specifications 179 Table 45 Electrical parameters 179 Table 46 Physical dimensions 180 Table 47 Performance specifications 180 Table 48 Nortel Networks GBIC models 185 Table 49 GBIC specifications 185 Table 50 M...

Страница 19: ...alone switch configuration A BayStack 420 Switch only stack configuration Before you begin This guide is intended for network managers and administrators with the following background Basic knowledge of networks Ethernet bridging and IP and IPX routing Familiarity with networking concepts and terminology Specific knowledge about the networking devices protocols topologies and interfaces that compr...

Страница 20: ...criptions where there is more than one option You must choose only one of the options Do not type the braces when entering the command Example If the command syntax is show ip alerts routes you must enter either show ip alerts or show ip routes but not both brackets Indicate optional elements in syntax descriptions Do not type the brackets when entering the command Example If the command syntax is...

Страница 21: ...variable and you substitute one value for it screen text Indicates system output for example prompts and system messages Example Set Trap Monitor Filters separator Shows menu paths Example Protocols IP identifies the IP option on the Protocols menu vertical line Separates choices for command keywords and arguments Enter only one of the choices Do not type the vertical line when entering the comman...

Страница 22: ...ardware that are not covered in other related publications Getting Started with the BayStack 420 Management Software part number 211250 A Describes how to install the Java based device level software management application Reference for the BayStack 420 Management Software part number 211251 A Describes how to use the Java based device level software management application You can print selected t...

Страница 23: ...rchased a Nortel Networks service program contact one of the following Nortel Networks Technical Solutions Centers An Express Routing Code ERC is available for many Nortel Networks products and services When you use an ERC your call is routed to a technical support person who specializes in supporting that product or service To locate an ERC for your product or service go to the www12 nortelnetwor...

Страница 24: ...24 Preface 209418 A ...

Страница 25: ...apter 1 BayStack 420 Switch This chapter introduces the BayStack 420 Switch and covers the following topics Physical description next Features on page 34 Physical description Figure 1 depicts the front and side views of the BayStack 420 Switch Figure 1 BayStack 420 Switch 9995FA ...

Страница 26: ...ens and customize your network using the supplied menus and screens see Chapter 3 Using the console interface on page 87 Table 1 Components on the BayStack 420 Switch front panel Item Description 1 Console port 2 Gigabit Interface Converter GBIC 3 Port connectors 4 LED display panel BayStack 420 24T Switch 1 3 5 7 9 11 2 4 6 8 10 12 13 15 17 19 21 23 14 16 18 20 22 24 3 25 Console Port 1 BayStack ...

Страница 27: ...BayStack 420 Switch uses 10BASE T 100BASE TX RJ 45 8 pin modular port connectors The 10BASE T 100BASE TX port connectors are configured as MDI X media dependent interface crossover These ports connect over straight cables to the network interface card NIC in a node or server similar to a conventional Ethernet repeater hub If you are connecting to an Ethernet hub or Ethernet switch use a crossover ...

Страница 28: ...gnments on page 195 for more information about the RJ 45 port connectors LED display panel Figure 3 shows the BayStack 420 Switch LED display panel See Table 2 for a description of the LEDs Figure 3 BayStack 420 Switch LED display panel Note Use only Category 5 copper unshielded twisted pair UTP cable connections when connecting 10BASE T 100BASE TX ports 9991EA 1 3 5 7 9 11 13 15 17 19 21 23 2 4 6...

Страница 29: ... configured as the stack base unit Off The switch is not configured as the stack base unit or is in standalone mode Amber Due to a stack error the unit is unable to maintain the stack connection 10 100 Link 10 100 Mb s port speed indicator Green On The corresponding port is set to operate at 100 Mb s and the link is good Amber On The corresponding port is set to operate at 10 Mb s and the link is ...

Страница 30: ...de Down connector see Stack configurations on page 51 Cooling fans Two cooling fans are located on one side of the BayStack 420 Switch to provide cooling for the internal components See Figure 1 on page 25 When you install the switch be sure to allow enough space on both sides of the switch for adequate air flow See Installing the BayStack 420 10 100 1000 Switch for detailed information Table 3 Co...

Страница 31: ... cords Table 4 International power cord specifications Country Plug description Specifications Typical plug Continental Europe CEE7 standard VII male plug Harmonized cord HAR marking on the outside of the cord jacket to comply with the CENELEC Harmonized Document HD 21 220 or 230 VAC 50 Hz Single phase U S Canada Japan NEMA5 15P male plug UL recognized UL stamped on cord jacket CSA certified CSA l...

Страница 32: ...llationsanweisungen die nur von qualifiziertem Kundendienstpersonal ausgeführt werden dürfen Attention Lisez ceci immédiatement Examinez ce cordon d alimentation pour déterminer s il dispose de la fiche appropriée et s il est bien agréé pour utilisation sur votre installation électrique Débarrassez vous en immédiatement s il ne convient pas à l utilisation sur le secteur électrique en usage dans v...

Страница 33: ... off power to this device The power cord must always be connected in a location that can be accessed quickly and safely in case of an emergency Vorsicht Die Stromzufuhr zu diesem Gerät kann nur durch Ziehen des Netzstromkabels unterbrochen werden Die Netzsteckdose an die das Netzstromkabel angeschlossen ist muß sich stets an einem Ort befinden der bei einem Notfall schnell und einfach zugänglich i...

Страница 34: ...h Ethernet switches and bridges divide a network into smaller collision domains they do not affect the broadcast domain In simple terms a virtual local area network provides a mechanism to fine tune broadcast domains Your BayStack 420 Switch allows you to create port based VLANs IEEE 802 1Q port based VLANs A port based VLAN is a VLAN in which the ports are explicitly configured to be in the VLAN ...

Страница 35: ...cess to the switch based on allowed source MAC addresses Figure 5 shows a typical campus configuration using the BayStack 420 Switch security features This example assumes that the switch the teachers offices and classrooms and the library are physically secured The student dormitory may or may not be physically secure Figure 5 BayStack 420 Switch security feature Library Teachers offices and clas...

Страница 36: ...d ports Teachers offices and classrooms The PCs that are located in the teachers offices and in the classrooms are assigned MAC address based security that is specific for each classroom and office location The security feature logically locks each wall jack to the specified station and prevents unauthorized access to the switch should someone attempt to connect a personal laptop PC into the wall ...

Страница 37: ...ns to set up your RADIUS server refer to your RADIUS server documentation For instructions to use the console interface CI to set up the RADIUS based security feature see Chapter 3 Using the console interface on page 87 MAC address based security The MAC address based security feature allows you to set up network access control based on source MAC addresses of authorized stations You can Create a ...

Страница 38: ...mage storage The BayStack 420 Switch uses flash memory to store the switch software image The flash memory allows you to update the software image with a newer version without changing the switch hardware see Software Download screen on page 166 An in band connection between the switch and the TFTP load host is required to download the software image Configuration parameters storage All configurat...

Страница 39: ...to as conversation steering allows you to designate a single switch port as a traffic monitor for a specified port You can specify port based monitoring for ingress to a specific port You can also attach a probe device such as a Nortel Networks StackProbe or equivalent to the designated monitor port For more information about the port mirroring feature see Port Mirroring Configuration screen on pa...

Страница 40: ...Autpolarity detects receive and transmit twisted pairs automatically When autopolarity is active any straight or crossover category 5 cable can be used to provide connection to a port If the port is set to a fixed configuration then autopolarity is not active For more information about autosensing and autonegotiation modes see Chapter 4 Troubleshooting on page 173 RFCs For more information about n...

Страница 41: ...nfigure SNMP traps on individual ports to generate automatically for conditions such as an unauthorized access attempt or changes in a port s operating status Table 5 lists supported SNMP MIBs Table 5 SNMP MIB support Application Standard MIBs Proprietary MIBs S5 Chassis MIB s5cha127 mib S5 Agent MIB s5age140 mib RMON rfc1757 mib MLT rcMLT SNMPv3 MIBs RFCs 2571 2572 2573 2574 2575 2576 MIB2 rfc121...

Страница 42: ...AC address see Stack MAC address on page 50 For more information and an example of a BootP configuration file see Appendix F Sample BootP configuration file on page 207 Table 6 Support SNMP traps Trap name Configurable Sent when RFC 1215 industry standard linkUp Per port A port s link state changes to up linkDown Per port A port s link state changes to down authenticationFailure System wide There ...

Страница 43: ...ace see Chapter 3 Using the console interface on page 87 Web based management You can manage the network from the World Wide Web Access the Web based graphical user interface GUI through the Embedded Web Server EWS the HTML based browser located on your network The GUI allows you to configure monitor and maintain your network through Web browsers You can also download software using the Web For in...

Страница 44: ...ons between the segments rings and nodes of your network The views allow you to analyze network performance and fault conditions on the individual segments and specific areas in your network They can also alert you when a problem has occurred in a specific location For further information about Optivity contact your Nortel Networks sales representative ...

Страница 45: ...EEE 802 1Q VLAN workgroups on page 54 MultiLink Trunks on page 70 Port mirroring on page 85 Network configuration examples This section provides four network configuration examples using BayStack 420 switches In these examples the packet classification feature can be used to prioritize the traffic of the network to ensure uninterrupted traffic of critical applications The examples are Desktop swit...

Страница 46: ...able After segmentation 92 users have 40 Mb s four times the previous bandwidth while adding 22 dedicated 100 Mb s connections This configuration can be extended to add more segments without degrading performance Up to 24 users To Network Center Key 10 Mb s 100 Mb s 1000 Mb s BayStack 420 10BASE T hub Before After Up to 24 users To Network Center 9996EA 23 users share 10 Mb s 10 24 Mb s per user N...

Страница 47: ...To Network Center 9997EA Up to 23 users Up to 23 users 88 users share 10 Mb s 10 88 Mb s per user Server bottleneck 10 Mb s bandwidth Network center bottleneck 10 Mb s bandwidth Total of 88 users Three sets of 23 users each set shares 10 Mb s 10 23 Mb s per user Addition of 21 users each with dedicated 100 Mb s bandwidth Server with dedicated 100 Mb s bandwidth Network center with dedicated 1 Gb s...

Страница 48: ...ure 8 the Passport 1100 switch is used as a backbone switch connecting to the BayStack 420 Switch with an optional 1000BASE SX GBIC for maximum bandwidth The BayStack 303 and BayStack 304 switches have 100 Mb s connections to the BayStack 420 Switch a 100BASE TX hub and a 100 Mb s server as well as 10 Mb s connections to DTE data terminal equipment See the Nortel Networks library Web page www nort...

Страница 49: ...le as a single unit Unit Select switch The Unit Select push button switch in Base determines the base unit for the stack configuration see Base unit on page 50 The Unit Select switch status is displayed on the BayStack 420 Switch LED display panel When the Unit Select switch is in the Base in position all other Unit Select switches in the stack configuration must be set to Off out BayStack 304 swi...

Страница 50: ...he stack according to the position of the base unit within the stack Thereafter the individual units maintain their original unit numbering even if you change the position of one or more units in the stack you can renumber the units using the Renumber Stack Units screen see Renumber Stack Units screen on page 154 For example when you initially power up the stack the base unit becomes unit 1 and th...

Страница 51: ...the unit became a member of the stack IP address Console password Telnet password SNMP community strings Stack configurations As shown in Figure 9 the cable connectors provide the ability to stack up to eight switches Because stack parameters are associated with the base unit see Base unit on page 50 the physical stack order depends on the base unit s position and whether the stack is configured s...

Страница 52: ... is from top to bottom unit 1 to unit 8 Table 7 Stack up configuration description Item Description 1 Last unit 2 Base unit 3 Stacking cable 30 cm order number AL 2018005 4 Stacking cable 1 m order number AL 2018006 Unit 8 Unit 7 Unit 6 Unit 5 Unit 4 Unit 3 Unit 2 Unit 1 1 10001EA 4 100 240 V 50 60Hz 2A Out In Cascade 2 100 240 V 50 60Hz 2A Out In Cascade 100 240 V 50 60Hz 2A Out In Cascade 100 24...

Страница 53: ...ays configure the top unit in the stack as the base unit Table 8 Stack down configuration description Item Description 1 Base unit 2 Last unit 3 Stacking cable 30 cm order number AL 2018005 4 Stacking max return cable 1 m part number AL 2018006 Unit 1 Unit 2 Unit 3 Unit 4 Unit 5 Unit 6 Unit 7 Unit 8 1 10002EA 4 100 240 V 50 60Hz 2A Out In Cascade 2 100 240 V 50 60Hz 2A Out In Cascade 100 240 V 50 ...

Страница 54: ...o 32 port based VLANs with IEEE 802 1Q tagging available per port Ports are grouped into broadcast domains by assigning them to the same VLAN Frames received in one VLAN can only be forwarded within that VLAN and multicast frames and unknown unicast frames are flooded only to ports in the same VLAN Setting up virtual LANs VLANs is a way to segment networks to increase network capacity and performa...

Страница 55: ...t for the BayStack 420 10 100 1000 Switch Port VLAN identifier PVID a classification mechanism that associates a port with a specific VLAN For example a port with a PVID of 3 PVID 3 assigns all untagged frames received on this port to VLAN 3 Tagged frame the 32 bit field VLAN tag in the frame header that identifies the frame as belonging to a specific VLAN Untagged frames are marked tagged with th...

Страница 56: ... field is interpreted as a binary number therefore has a value of 0 7 This field allows the tagged frame to carry the user priority across bridged LANs where the individual LAN segments may be unable to signal priority information Port priority the priority level assigned to untagged frames received on a port This value becomes the user priority for the frame Tagged packets get their user priority...

Страница 57: ...Figure 12 untagged incoming packets are assigned directly to VLAN 2 PVID 2 Port 5 is configured as a tagged member of VLAN 2 and port 7 is configured as an untagged member of VLAN 2 Port 1 DA SA Data CRC Incoming untagged packet BS45010A Port 2 Port 3 Port 4 Port 5 VLAN 1 802 1Q Switch By default Key All ports are assigned PVID 1 All ports are untagged members of VLAN 1 PVID 1 Port 6 Port 7 Port 8...

Страница 58: ...1Q tagging after port based VLAN assignment Port 6 DA SA Data CRC BS45011A Port 7 Port 8 Port 1 Port 4 Port 5 Port 2 Port 3 802 1Q Switch PVID 2 Untagged packet Untagged member of VLAN 2 Tagged member of VLAN 2 Before BS45012A Port 6 Port 7 Port 8 Port 1 Port 4 Port 5 Port 2 Port 3 802 1Q Switch Key Priority CFI VID User_priority Canonical format indicator VLAN identifier PVID 2 Tagged member of V...

Страница 59: ...s stripped untagged as it leaves the switch through port 7 which is configured as an untagged member of VLAN 2 Figure 16 802 1Q tagging after 802 1Q tag assignment Port 6 DA SA Tag Data CRC Tagged packet BS45013A Port 7 Port 8 Port 1 Port 4 Port 5 Port 2 Port 3 802 1Q Switch PVID 2 Untagged member of VLAN 2 Tagged member of VLAN 2 Before BS45014A Port 6 Port 7 Port 8 Port 1 Port 4 Port 5 Port 2 Po...

Страница 60: ...g the port for that VLAN are marked as belonging to that specific VLAN You can assign specific switch ports as members of one or more VLANs that span multiple switches without interfering with the Spanning Tree Protocol VLANs spanning multiple 802 1Q tagged switches Figure 17 shows VLANs spanning two BayStack 420 switches The 802 1Q tagging is enabled on S1 port 2 and on S2 port 1 for VLAN 1 and V...

Страница 61: ...agging and you must use a single switch port on each switch for each VLAN For this configuration to work properly you must set spanning tree participation to Disabled the STP is not supported across multiple LANs Figure 18 VLANs spanning multiple untagged switches When the STP is enabled on these switches only one link between each pair of switches will be forwarding traffic Because each port belo...

Страница 62: ... S1 and Switch S2 is forwarding at any time Communications failure occurs between VLAN 2 of S1 and VLAN 2 of S2 blocking communications between Stations A and B The STP selects the link connecting VLAN 1 on Switches S1 and S2 as the forwarding link based on port speed duplex mode and port priority Because the other link connecting VLAN 2 is in Blocking mode stations on VLAN 2 in Switch S1 cannot c...

Страница 63: ...wn in Figure 20 In this example clients on different broadcast domains share resources The broadcasts from ports configured in VLAN 3 can be seen by all VLAN port members of VLAN 3 Figure 20 Multiple VLANs sharing resources In the above configuration all of the switch ports are set to participate as VLAN port members This arrangement allows the switch to establish the appropriate broadcast domains...

Страница 64: ...ociation for ports 6 and 11 is PVID 1 Ports 2 4 10 and 8 are untagged members of VLAN 2 The PVID VLAN association for ports 2 4 and 10 is PVID 2 Ports 2 4 10 8 6 and 11 are untagged members of VLAN 3 The PVID VLAN association for port 8 is PVID 3 The following steps show how to use the VLAN configuration screens to configure the VLAN 3 broadcast domain shown in Figure 21 Port 2 BS45019A Port 4 Por...

Страница 65: ... 3 From the VLAN Configuration Menu select VLAN Configuration or press v The default VLAN Configuration screen opens Figure 22 Figure 22 Default VLAN Configuration screen example The VLAN Configuration screen settings shown in Figure 22 are default settings with all switch ports classified as untagged members of VLAN 1 Figure 23 shows the VLAN Configuration screen after it is configured to support...

Страница 66: ... example To configure the PVID port VLAN identifier for port 8 1 From the VLAN Configuration screen press Ctrl R to return to the VLAN Configuration Menu 2 From the VLAN Configuration Menu select VLAN Port Configuration or press c The default VLAN Port Configuration screen opens Figure 24 The VLAN Port Configuration screen settings shown in Figure 24 are default settings ...

Страница 67: ...Figure 24 Default VLAN Port Configuration screen example Figure 25 shows the VLAN Port Configuration screen after it is configured to support the PVID assignment for port 8 as shown in Figure 21 on page 64 Port Name is optional The PVID VLAN association for VLAN 3 is now PVID 3 ...

Страница 68: ...gured with multiple VLANs Ports 1 6 11 and 12 are in VLAN 1 Ports 2 3 4 7 and 10 are in VLAN 2 Port 8 is in VLAN 3 Because S4 does not support 802 1Q tagging a single switch port on each switch must be used for each VLAN see VLANS spanning multiple untagged switches on page 61 The connection to S2 requires only one link between the switches because S1 and S2 are both BayStack 420 switches that sup...

Страница 69: ... VLAN configuration spanning multiple switches BayStack 420 BayStack 420 Untagged ports STP disabled Both ports are tagged members of VLAN 1 and VLAN 2 Non 802 1Q tagging switch 10008EA Key VLAN 1 PVID 1 VLAN 2 PVID 2 VLAN 3 PVID 3 S1 S2 S4 S3 V1 V2 V2 V1 V2 V3 Non 802 1Q tagging switch ...

Страница 70: ...re information about configuring VLANs see VLAN Configuration Menu screen on page 120 See also Appendix C Quick configuration for MultiLink Trunking on page 193 for configuration flowcharts that can help you use this feature MultiLink Trunks MultiLink Trunks allow you to group from two to four switch ports together to form a link to another switch or server thus increasing aggregate throughput of ...

Страница 71: ...ch to switch connections approaches single port bandwidth limitations creating a MultiLink Trunk can supply the additional bandwidth required to improve the performance Figure 28 shows a typical switch to server trunk configuration In this example file server FS1 uses dual MAC addresses using one MAC address for each network interface card NIC For this reason FS1 does not require a trunk assignmen...

Страница 72: ...ks T2 T3 T4 and T5 Clients accessing data from the servers FS1 and FS2 are provided with maximized bandwidth through trunks T1 T2 T3 T4 and T5 Trunk members the ports making up each trunk do not have to be consecutive switch ports you can select ports randomly as shown by T5 With spanning tree enabled one of the trunks T2 or T3 acts as a redundant backup trunk to Switch S2 With spanning tree disab...

Страница 73: ...uration screen on page 135 Trunk configuration screen examples This section shows examples of the MultiLink Trunk configuration screens for the client server configuration example shown in Figure 29 The screens show how you could set up the trunk configuration screens for switches S1 to S4 See Spanning tree considerations for MultiLink Trunks on page 82 and MultiLink Trunk Configuration screen on ...

Страница 74: ...e trunk configurations T1 T2 T3 T4 and T5 To set up the S1 trunk configuration Figure 30 Choosing the MultiLink Trunk Configuration Menu screen The MultiLink Trunk Configuration Menu screen opens Figure 31 Choose MultiLink Trunk Configuration or press t from the MultiLink Trunk Configuration Menu screen Figure 30 ...

Страница 75: ...hat correspond to the switch ports specified in the Trunk Members fields Trunk Members Unit Port indicates the ports that can be configured in each row to create the corresponding trunk Note The Unit value in the Unit Port field is not configurable when the switch is operating standalone For detailed information about the MultiLink Trunk Configuration screen fields see MultiLink Trunk Configuratio...

Страница 76: ...unk members for flooding and forwarding which allows the switch to stabilize and distribute the data streams of source addresses across the trunk members Trunk Status indicates the Trunk Status for each of the trunks When set to Enabled the configuration settings for that specific trunk are activated Trunk Name indicates optional fields for assigning names to the corresponding configured trunks Th...

Страница 77: ...runk members of trunk 1 Ports 1 and 3 are assigned as trunk members of trunk 2 STP Learning indicates the spanning tree participation setting for each of the trunks Trunks 1 and 2 are enabled for Normal STP Learning Trunk Mode read only indicates the Trunk Mode for each of the trunks The Trunk Mode field values for trunks 1 and 2 are set to Basic Source MAC addresses are statically assigned to spe...

Страница 78: ...S2 connects to Switch 1 Trunk Configuration screen for Switch S3 As shown in Figure 29 on page 73 Switch S3 is set up with one trunk configuration T4 This trunk connects directly to Switch S1 As in the previous screen examples to set up an interswitch trunk configuration choose MultiLink Trunk Configuration from the MultiLink Trunk Configuration Menu screen Figure 33 shows the MultiLink Trunk Conf...

Страница 79: ... to specific trunk members for flooding and forwarding which allows the switch to stabilize and distribute the data streams of source addresses across the trunk members Trunk Status indicates the Trunk Status for each of the trunks When set to Enabled the configuration settings for that specific trunk are activated Trunk Name indicates optional fields for assigning names to the corresponding confi...

Страница 80: ...rning indicates the spanning tree participation setting for each of the trunks Trunk 1 is enabled for Normal STP Learning Trunk Mode read only indicates the Trunk Mode for each of the trunks The Trunk Mode field value for trunk 1 is set to Basic Source MAC addresses are statically assigned to specific trunk members for flooding and forwarding which allows the switch to stabilize and distribute the...

Страница 81: ...hich switch ports up to four are to become trunk members the specific ports making up the trunk A minimum of two ports are required for each trunk Ensure that the chosen switch ports are set to Enabled using either the Port Configuration screen see Port Configuration screen on page 129 or network management Trunk member ports must have the same VLAN configuration 3 All network cabling should be co...

Страница 82: ... Cost 1000 LAN speed in Mb s Another three port trunk T2 is configured with an aggregate bandwidth of 210 Mb s with a comparable Path Cost of 4 When the Path Cost calculations for both trunks are equal the software chooses the trunk with the larger aggregate bandwidth T1 to determine the most efficient path Figure 35 Path Cost arbitration example BayStack 420 24T Switch BayStack 420 24T Switch 100...

Страница 83: ...runk member ports 2 4 and 6 of Switch S1 are configured correctly to trunk member ports 7 9 and 11 of Switch S2 The Spanning Tree Port Configuration screen for each switch shows the port state field for each port in the Forwarding state Figure 36 Example 1 correctly configured trunk T1 S1 Port Configuration screen 10014EA S2 Port Configuration screen S1 S2 BayStack 420 BayStack 420 ...

Страница 84: ...d and then reconnected to port 13 the Spanning Tree Port Configuration screen for Switch S1 changes to show port 6 in the Blocking state Figure 37 Figure 37 Example 2 detecting a misconfigured port S1 S2 BayStack 420 BayStack 420 S1 Port Configuration screen 10017EA S2 Port Configuration screen Blocking T1 ...

Страница 85: ...ree participation setting in the Trunk Configuration screen does not take effect until you set the Trunk Status field to Enabled The trunk is also viewed by management stations as a single spanning tree port The spanning tree port is represented by the trunk member with the lowest port number For example if ports 13 14 15 and 16 are trunk members of trunk T1 the management station views trunk T1 a...

Страница 86: ...een prompts that precede some actions For example when you configure a switch for port mirroring or when you modify an existing port mirroring configuration the new configuration does not take effect until you respond Yes to the following screen prompt Figure 38 Port Mirroring Configuration port based screen example Is your port mirroring configuration complete Yes ...

Страница 87: ...le terminal attached to your BayStack 420 Switch remotely through a dial up modem connection or in band through a Telnet session see Console port on page 26 You can connect your console cable into any unit in a BayStack 420 Switch only stack for a unified stack interface For the mixed stack management functions to become fully operational you must connect your console terminal into a BayStack 420 ...

Страница 88: ...several possible values other options allow you to set or modify a parameter Navigating the CI menus and screens Use the following methods to navigate the CI menus and screens To select a menu option 1 Use the arrow keys to highlight the option name 2 Press Enter The option takes effect immediately after you press Enter Alternatively you can press the key corresponding to the underlined letter in ...

Страница 89: ...umber Stack Units Display Hardware Units Spanning Tree Configuration TELNET Configuration Software Download Configuration File Display Event Log Reset Reset to Default Settings Logout Main Menu MAC Address Table MAC Address Based Security VLAN Configuration Port Configuration High Speed Flow Contro Configuration MultiLink Trunk Configuration Port Mirroring Configuration Display Port Statistics Cle...

Страница 90: ...lable from the CI main menu Figure 40 The CI screens and submenus for these options are described in the following sections Note The field values shown in the CI screens in this section are provided as examples only Note Some menu options shown in this main menu example and in other screen examples in this chapter may not appear on your screen depending on the switch options installed However the ...

Страница 91: ... or modify the SNMP read only community and read write community strings enable or disable the authentication trap and the link Up down trap set the IP address of trap receivers and set the trap community strings System Characteristics Displays the System Characteristics screen see System Characteristics screen on page 100 This screen allows you to view switch characteristics including number of r...

Страница 92: ...o communicate with the BayStack 420 Switch as if the console terminal were directly connected to it You can have up to four active Telnet sessions running at one time in either a standalone switch or a stack configuration Software Download Displays the Software Download screen see Software Download screen on page 166 This screen allows you to revise the BayStack 420 Switch software image that is l...

Страница 93: ...ou press Enter Achtung Bei Auswahl des Befehls zur Rücksetzung auf die Standardeinstellungen werden alle von Ihnen konfigurierten Einstellungen durch die werkseitigen Standardeinstellungen ersetzt wenn Sie die Eingabetaste drücken Attention Si vous restaurez la configuration usine votre configuration courante sera remplacée par la configuration usine dès que vous appuierez sur Entrée Precaución Si...

Страница 94: ...igurable fields takes effect as soon as you press Enter To open the IP Configuration Setup screen Figure 41 IP Configuration Setup screen Table 10 describes the IP Configuration Setup screen fields Choose IP Configuration Setup or press i from the main menu Note The read only fields in this screen are updated based on the BootP mode specified in the BootP Request Mode field See Choosing a BootP re...

Страница 95: ...last BootP reply received In Band Stack IP Address The in band stack IP address field This field is not required for the operation of the standalone switch Default Value 0 0 0 0 no IP address assigned Range Four octet dotted decimal notation where each octet is represented as a decimal value between 0 and 255 separated by a decimal point In Band Switch IP Address The in band IP address of the swit...

Страница 96: ...entifier are set to 0 Default Value 0 0 0 0 no subnet mask assigned Range Four octet dotted decimal notation where each octet is represented as a decimal value between 0 and 255 separated by a decimal point Default Gateway The IP address of the default gateway Default Value 0 0 0 0 no IP address assigned Range Four octet dotted decimal notation where each octet is represented as a decimal value be...

Страница 97: ...If an IP address is not currently in use these actions take effect immediately If an IP address is currently in use these actions take effect only after the switch is reset or power cycled BootP Always Allows the switch to be managed only when configured with the IP address obtained from the BootP server When selected this mode operates as follows The switch continues to broadcast BootP requests r...

Страница 98: ...n selected this mode operates as follows When the IP data is entered from the console terminal the data becomes the in band address of the switch and BootP requests are not broadcast The switch can be managed using this in band IP address When the in band IP address is not set from the console terminal the switch broadcasts BootP requests until it receives a BootP reply containing an in band IP ad...

Страница 99: ...To open the SNMP Configuration screen Figure 42 SNMP Configuration screen Table 11 describes the SNMP Configuration screen fields Choose SNMP Configuration or press m from the main menu Table 11 SNMP Configuration screen fields Field Description Read Only Community String The community string used for in band read only SNMP operations Default Value public Range Any ASCII string of up to 32 printab...

Страница 100: ... String The community string associated with one of the four trap IP addresses see Trap 1 IP Address Default Value Zero length string Range Any ASCII string of up to 32 printable characters Authentication Trap Determines whether a trap will be sent when there is an SNMP authentication failure Default Value Enabled Range Enabled Disabled Autotopology Allows you to enable or disable the switch parti...

Страница 101: ... unit is not part of a stack configuration operating standalone the read only field indicates the unit is operating as a switch When in this operation mode the Size of Stack and Base Unit fields see following description do not appear Size of Stack This read only field only appears when the switch is participating in a stack configuration This field indicates the number of units configured in the ...

Страница 102: ...nique identification of the switch which contains the vendor s private enterprise number sysUpTime A read only field that shows the length of time since the last reset Note that this field is updated when the screen is redisplayed sysServices A read only field that indicates the switch s physical and data link layer functionality sysContact The name and phone number of the person responsible for t...

Страница 103: ...witch Configuration Menu screen The Switch Configuration Menu screen Figure 44 allows you to set or modify your switch configuration Choose Switch Configuration or press w from the main menu to open the Switch Configuration Menu screen Table 13 Figure 44 Switch Configuration Menu screen ...

Страница 104: ...ions VLAN Configuration VLAN Port Configuration VLAN Display by Port MAC SA and Return to Switch Configuration Menu screen This menu allows you to create and modify VLANs Port Configuration Displays the Port Configuration screen see Port Configuration screen on page 129 This screen allows you to configure a specific switch port all switch ports or when in a stack configuration all stack ports High...

Страница 105: ...tch Configuration Menu screen to open the MAC Address Table screen Figure 45 Clear All Port Statistics Allows you to clear all port statistics This option is followed by screen prompts that precede a choice of the actions If the switch is operating standalone choose one of the following Yes to clear all port statistics for all switch ports No to abort the option If the switch is participating in a...

Страница 106: ...ecifies how long a learned MAC address remains in the switch s forwarding database If an entry is inactive for a period of time that exceeds the specified aging time the address is removed Default Value 300 seconds Range 10 to 1 000 000 seconds Find an Address Allows the user to search for a specific MAC address Default Value 00 00 00 00 00 00 no MAC address assigned Range 00 00 00 00 00 00 to FF ...

Страница 107: ...thorized to access the switch You can also specify the ports that each MAC address is allowed to access The options for allowed port access include NONE ALL and single or multiple ports that are specified in a list for example 1 4 6 9 etc You must also include the MAC address of any router connected to any secure ports When the switch software detects a security violation the response can be to se...

Страница 108: ...en allows you to Enable or Disable the MAC Address Security feature MAC Address Security Port Configuration Displays the MAC Address Security Port Configuration screen see MAC Address Security Port Configuration screen on page 111 This screen allows you to Enable or Disable MAC Security for each port MAC Address Security Port Lists Displays the MAC Address Security Port Lists screen see MAC Addres...

Страница 109: ...ield is set to enabled the software checks source MAC addresses of packets that arrive on secure ports against MAC addresses listed in the MAC Address Security Table for allowed membership If the software detects a source MAC address that is not an allowed member the software registers a MAC intrusion event Default Disabled Range Disabled Enabled MAC Address Security SNMP Locked When this field is...

Страница 110: ...Port Configuration screen see Port Configuration screen on page 129 Default Disabled Range Disabled Enabled Forever Partition Time This field appears only when the Partition Port on Intrusion Detected field is set to enabled This field determines the length of time a partitioned port remains disabled This field is not operational when the Partition Port on Intrusion Detected field is set to Foreve...

Страница 111: ... for that entry is also cleared Default NONE Range NONE ALL a port number list for example 1 1 2 6 etc Learn by Ports All source MAC addresses of any packets received on the specified port or ports are added to the MAC Security Table when the Current Learning Mode field is set to Learning in Progress You cannot include any of the port values you have chosen for the secure ports field Default NONE ...

Страница 112: ...112 Chapter 3 Using the console interface 209418 A Figure 48 MAC Security Port Configuration screen 1 of 2 Figure 49 MAC Security Port Configuration screen 2 of 2 ...

Страница 113: ...ified MAC address in the MAC Address Security Table screen You can create as many as 32 port lists using up to five MAC Address Security Port Lists screens see Figure 50 Table 17 MAC Security Port Configuration screen fields Field Description Port Displays a numbered port list Trunk Displays the trunk number if the port is a member of that trunk Default blank field Security This field value determ...

Страница 114: ... 1 ALL 2 3 4 7 9 press Return or Enter when done Press Ctrl R to return to previous menu Press Ctrl C to return to Main Menu MAC Address Security Port Lists Entry Port List S15 S16 S17 S18 S19 S20 S21 More Press Ctrl N to display next screen Press Ctrl P to display previous screen Enter unit port 1 NONE 1 ALL 2 3 4 7 9 press Return or Enter when done Press Ctrl R to return to previous menu Press C...

Страница 115: ... configuration ALL indicates all of the stack port whereas in a standalone scenario ALL indicates all of the switch ports Table 18 MAC Address Security Port Lists screen fields Field Description Entry This field indicates the port list number S1 to S32 that corresponds to the values you set in the Port List field Port List This field allows you to create a port list that you can use as an Allowed ...

Страница 116: ... can use certain keystrokes as accelerator keys to help speed up repetitive tasks For example suppose you want to modify the Port List field in the MAC Address Security Port List screen Figure 51 on page 115 You can modify the port list in any of the following ways Add a new port to an existing port number list Remove a port from an existing port number list Copy an existing field into an adjacent...

Страница 117: ...a port from an existing port number list To remove a port from the port number list use the minus sign character instead of the plus sign character as described above Copying an existing field into and adjacent field You can use the period character to copy a previously entered field value into the field directly next to it For example to copy the Allowed Source S3 shown in Figure 51 on page 115 i...

Страница 118: ...complete Press Ctrl R to return to previous menu Press Ctrl C to return to Main Menu MAC Address Security Table Find an Address 00 00 00 00 00 00 MAC Address Allowed Source MAC Address Allowed Source Screen 1 More Press Ctrl N to display next screen Enter MAC Address xx xx xx xx xx xx press Return or Enter when complete Press Ctrl R to return to previous menu Press Ctrl C to return to Main Menu MA...

Страница 119: ...e Allowed Source field see next field description The specified MAC address does not take effect until the Allowed Source field is set to some value a single unit port number or a port list value that you previously configured in the MAC Address Security Port Lists screen You can clear an existing MAC address field by entering zero 0 in the field and pressing Enter Default no address assigned Rang...

Страница 120: ... ports to different broadcast domains Creating VLANs increases network flexibility by allowing you to reassign devices to accommodate network moves additions and changes eliminating the need to change physical cabling Default Blank field Range A single unit port or a port list value for example 1 3 1 6 3 4 S1 S5 etc 1 Multicast address Note that the first octet of any Multicast address will always...

Страница 121: ...n VLAN Configuration Displays the VLAN Configuration screen see VLAN Configuration screen on page 122 This screen allows you to set up VLAN workgroups VLAN Port Configuration Displays the VLAN Port Configuration screen see VLAN Port Configuration screen on page 125 This screen allows you to set up a specific switch port VLAN Display by Port Displays the VLAN Display by Port screen see VLAN Display...

Страница 122: ...atically When you configure ports as VLAN port members they become part of a set of ports that form a broadcast domain for a specific VLAN You can assign switch ports whether standalone or stacked unit ports as VLAN port members of one or more VLANs You can add or remove port members from a VLAN in accordance with the IEEE 802 1Q tagging rules See IEEE 802 1Q VLAN workgroups on page 54 for a descr...

Страница 123: ...ed VLAN workgroups You can create up to 32 different VLANs except VLAN 1 Default 1 Range 2 to 4094 Delete VLAN Allows you to delete specified VLANs except the assigned management VLAN See Management VLAN field Enter the number of the VLAN you want to delete then press Return or use the space bar to toggle through the selection until you reach the VLAN you want to delete then press Return The speci...

Страница 124: ... must be configured appropriately before this field can be set to active After you set the VLAN State field value to Active you cannot change the VLAN State VLAN Type Protocol Id or User defined PID field values unless you delete the VLAN If you delete a VLAN all configuration parameters that are associated with that VLAN are also deleted Default Inactive Range Inactive Active Port Membership Allo...

Страница 125: ...gged frames see IEEE 802 1Q VLAN workgroups on page 54 To open the VLAN Port Configuration screen When the Tagging field is set to Tagged Trunk you can set the Port Membership field as a tagged port member T or as a non VLAN port member The Port Membership fields are displayed in six port groups for example 1 6 7 12 13 18 The number of ports displayed depends on the switch model or type of optiona...

Страница 126: ...e switch numbers Port Allows you to select the number of the port you want to view or configure To view another port type its port number and press Enter or press the spacebar to toggle the port numbers Filter Untagged Frames Sets this port to filter discard all received untagged frames Default No Range No Yes Port Name The default port name with associated stack unit number when configured assign...

Страница 127: ...t screen PVID Associates this port with a specific VLAN For example a port with a PVID of 3 assigns all untagged frames received on this port to VLAN 3 Default 1 Range 1 to 4094 Tagging Allows you to assign VLAN Port Membership tagging options to this port as follows Untagged Access Any VLAN that this port is a member of will not be 802 1Q tagged Default Untagged Access Range Untagged Access Tagge...

Страница 128: ...numbers Port Allows you to select the number of the port you want to view To view another port type its port number and press Enter or press the spacebar on your keyboard to toggle the port numbers PVID Read only field that indicates the PVID setting for the specified port Port Name Read only field that indicates the port name assigned to the specified port VLANs Column header for the read only fi...

Страница 129: ...n or set the speed for selected switch ports autonegotiation is not supported on fiber optic ports You can disable switch ports that are trunk members however the screen prompts for verification of the request before completing the action Choosing Yes disables the port and removes it from the trunk To open the Port Configuration screen Figure 58 Port Configuration screen 1 of 2 Note The Autonegoti...

Страница 130: ...ou set in the Stack row will affect all ports in the entire stack except the GBIC ports or fiber optic ports Trunk The read only data displayed in this column indicates the trunks that correspond to the switch ports specified in the Trunk Members fields of the Trunk Configuration screen see MultiLink Trunk Configuration Menu screen on page 133 Status Allows you to disable any of the switch ports Y...

Страница 131: ...on When enabled sets the corresponding port speed to match the best service provided by the connected station up to 100 Mb s in full duplex mode This field is disabled for all fiber optic ports Default Value Enabled Range Enabled Disabled Speed Duplex1 Allows you to manually configure any port to support an Ethernet speed of 10 Mb s or 100 Mb s in half or full duplex mode This field is set by defa...

Страница 132: ...he spacebar to toggle the unit numbers the system only displays a screen for units that are configured with a Gigabit MDA Autonegotiation When enabled the port only advertises support for 1000 Mb s operation in full duplex mode Default Value Enabled Range Enabled Disabled Flow Control Allows you to control traffic and avoid congestion on the Gigabit MDA port Two modes are available see Choosing a ...

Страница 133: ... in the control frame or until a pause release control frame is received Both devices on the link must support this mode when it is selected Asymmetric mode This mode allows the link partner to send flow control pause frames to the GBIC port When a pause frame is received the receiving port suspends transmission of frames for a number of slot times specified in the control frame or until a pause r...

Страница 134: ...ks see MultiLink Trunks on page 70 To open the MultiLink Trunk Configuration Menu screen Figure 61 MultiLink Trunk Configuration Menu screen Note When a trunk is not active Trunk Status field set to Disabled configuration changes do not take effect until you set the Trunk Status field to Enabled Choose MultiLink Trunk Configuration or press t from the Switch Configuration Menu screen ...

Страница 135: ...enu options Option Description MultiLink Trunk Configuration Displays the MultiLink Trunk Configuration screen Figure 62 This screen allows you to configure up to six MultiLink Trunks within a standalone switch or within a stack configuration You can group up to four switch ports together to form each trunk MultiLink Trunk Utilization Displays the MultiLink Trunk Utilization screen Figure 63 and F...

Страница 136: ... Trunk Members column contains fields in each row that can be configured to create the corresponding trunk The Unit value in the Unit Port field is configurable only when the switch unit is part of a stack configuration It indicates that the trunk members in this row are associated with the specified unit number configured in the Unit field Each switch port can only be a member of a single trunk T...

Страница 137: ...st is the same as Normal except that the state transition timer is shortened to two seconds Default Value Normal Range Normal Fast Disabled Trunk Mode The Trunk Mode column contains a single read only field for each row that indicates the default operating mode for the switch Basic Basic mode is the default mode for the switch When in this mode source MAC addresses are dynamically assigned to spec...

Страница 138: ...138 Chapter 3 Using the console interface 209418 A Figure 63 MultiLink Trunk Utilization screen 1 of 2 Figure 64 MultiLink Trunk Utilization screen 2 of 2 ...

Страница 139: ...f bandwidth utilization see Range Default Value Rx and Tx Range Rx and Tx Rx Tx Unit Port Lists the trunk member ports that correspond to the trunk specified in the Trunk column The Unit extension to the Port column name only appears when the switch unit is part of a stack configuration It indicates that the ports in this row are associated with the specified unit number configured in the Unit fie...

Страница 140: ... screen fields Field Description Monitoring Mode Allows a user to select any one of six port based monitoring modes or any one of five address based monitoring modes see Table 30 on page 141 Selecting any one of the six port based modes activates the port X and port Y screen fields where a user can choose up to two ports to monitor Selecting any one of the five address based modes activates the Ad...

Страница 141: ...Clear All Port Statistics option to clear port counters for all switches or ports see Switch Configuration Menu screen on page 103 Monitor Unit Port Indicates the port number of the specified unit that is designated as the monitor port Default Value Zero length string Range 1 to 8 1 to 28 depending on model type Unit Port X Indicates one of the ports of the specified unit that will be monitored by...

Страница 142: ...screen Table 31 describes the Port Statistics screen fields Choose Display Port Statistics or press d from the Switch Configuration Menu screen Note In a stacked configuration the Port Statistics screen appears in a slightly different format when the port selected in the Unit Port field is configured with a GBIC ...

Страница 143: ...tal number of multicast packets transmitted successfully on this port excluding broadcast packets Broadcasts Received column Indicates the total number of good broadcast packets received on this port Transmitted column Indicates the total number of broadcast packets transmitted successfully on this port Total Octets Received column Indicates the total number of octets of data including data in bad...

Страница 144: ...er CRC and framing also known as short frames or runts Oversized Packets Indicates the total number of packets received on this port with more than 1518 bytes and with proper CRC and framing also known as oversized frames Filtered Packets Indicates the number of packets filtered not forwarded by this port Flooded Packets Indicates the total number of packets flooded forwarded through this port bec...

Страница 145: ...set all messages stored in NVRAM are copied to DRAM DRAM messages are not copied to NVRAM The messages copied to DRAM are time stamped to zero 0 To open the System Log screen The following field values appear only when the port selected in the Unit Port field is configured with a GBIC Pause Frames Port 25 only Transmitted column Indicates the total number of pause frames transmitted on this port P...

Страница 146: ...t the unit number of the BayStack 420 Switch you want to view To view the log messages of another BayStack 420 Switch type its unit number and press Enter or press the spacebar on your keyboard to toggle the unit numbers Display Messages From This field allows you to select the RAM source your messages are obtained from Choose Non Volatile NVRAM or Volatile DRAM Non Volatile Use the spacebar to to...

Страница 147: ...her the configuration information received from NVRAM DRAM depending on what is selected in the Display Messages From field is complete Use the spacebar to toggle between the options Default No Range No Yes Clear Messages From This field allows you to clear the information messages from DRAM NVRAM or both If you clear DRAM messages existing NVRAM messages are copied into DRAM After a system reset ...

Страница 148: ... current console comm port parity setting Comm Port Stop Bits A read only field that indicates the current console comm port stop bit setting Console Port Speed Allows you to set the console comm port baud rate to match the baud rate of the console terminal Default Value 9600 Baud Range 2400 Baud 4800 Baud 9600 Baud 19200 Baud 38400 Baud Caution If you choose a baud rate that does not match your c...

Страница 149: ...la consola al pulsar Intro Si se pierde la comunicación ajuste el terminal de la consola para que coincida con el nuevo valor del puerto de servicio Attenzione Nel caso in cui si scelga una velocità di trasmissione non corrispondente a quella del terminale della console la comunicazione con l interfaccia della console cadrà premendo il tasto Invio Se la comunicazione cade impostare il terminale de...

Страница 150: ...ace CI of any participating switch in a stack configuration through a Telnet session If you set this field to Required you can use the Logout option to restrict access to the CI of any stack unit Thereafter you will need to specify the correct password at the console terminal prompt when accessing the stack See Console Read Only Stack Password and Console Read Write Stack Password for more informa...

Страница 151: ...mots de passe par défaut du système assurez vous de bien noter vos nouveaux mots de passe et de les conserver dans un endroit sûr Si vous perdez vos nouveaux mots de passe vous ne pourrez plus accéder à votre interface Le cas échéant veuillez contacter Nortel Networks Precaución Si modifica las contraseñas predeterminadas asignadas por el sistema asegúrese de anotar las nuevas contraseñas y guárde...

Страница 152: ...the system supplied default passwords be sure to write the new passwords down and keep them in a safe place If you forget the new passwords you cannot access the console interface In that case contact Nortel Networks for help Achtung Wenn Sie die für das System standardmäßig eingestellten Paßwörter ändern notieren Sie sich die neuen Paßwörter und bewahren Sie sie an einem sicheren Ort auf Falls Si...

Страница 153: ...n where each octet is represented as a decimal value separated by a decimal point Secondary RADIUS Server The IP address of the Secondary RADIUS server Default 0 0 0 0 no IP address assigned Range Four octet dotted decimal notation where each octet is represented as a decimal value separated by a decimal point RADIUS UPD Port The user datagram protocol UDP port for the RADIUS server Default 1645 R...

Страница 154: ...e switch is participating in a stack configuration Choose Renumber Stack Units or press n from the main menu Renumber Stack Units Current Unit Number MAC Address New Unit Number 1 00 60 fd 77 a6 0c 1 2 00 60 fd 77 a5 f0 2 3 00 60 fd 77 a4 4c 3 4 00 60 fd 77 ab 84 4 Renumbering stack units will cause an automatic Reset to Current Settings to occur across the entire stack The current configuration w...

Страница 155: ...Address Read only field listing the MAC address of the corresponding unit listed in the Current Unit Number field New Unit Number User settable field showing the current unit number of each unit in the stack You can change any of the fields as required You can also delete entries by typing zero 0 or using the space bar to clear the field Default Value Current stack order Range 1 to 8 Renumber unit...

Страница 156: ...nfiguration Menu screen Figure 71 allows you to view spanning tree parameters and configure individual switch ports to participate in the spanning tree algorithm STA To modify any of the spanning tree parameters see your SNMP documentation To open the Spanning Tree Configuration Menu screen Choose Spanning Tree Configuration or press p from the main menu ...

Страница 157: ... Tree Configuration Menu options Option Description Spanning Tree Port Configuration Displays the Spanning Tree Port Configuration screen see Spanning Tree Port Configuration screen on page 158 Spanning Tree Switch Settings Displays the Spanning Tree Switch Settings screen see Spanning Tree Switch Settings screen on page 161 Return to Main Menu Exits the Spanning Tree Configuration Menu and displa...

Страница 158: ...re 73 show sample port configurations for the two Spanning Tree Port Configuration screens Choose Spanning Tree Port Configuration or press c from the Spanning Tree Configuration Menu to open the Spanning Tree Port Configuration screen Figure 72 Spanning Tree Port Configuration screen 1 of 2 Note If spanning tree participation of any trunk member is changed enabled or disabled the spanning tree pa...

Страница 159: ...pe its unit number and press Enter or press the spacebar on your keyboard to toggle the unit numbers Port Indicates the switch port numbers that correspond to the field values in that row of the screen for example the field values in row 2 apply to switch port 2 Note that the values in the Switch row affect all switch ports and when the switch is part of a stack the values in the Stack row affect ...

Страница 160: ...numerical value See also Path Cost Default Value 128 Range 0 to 255 Path Cost This read only field is a bridge spanning tree parameter that determines the lowest path cost to the root Default Value 10 or 100 1 for Gigabit port Path Cost 1000 LAN speed in Mb s The higher the LAN speed the lower the path cost See also Priority Range 1 to 65535 State This read only field indicates the current port st...

Страница 161: ... Spanning Tree Switch Settings screen Figure 74 allows you to view spanning tree parameter values for the BayStack 420 Switch To open the Spanning Tree Switch Settings screen Figure 74 Spanning Tree Switch Settings screen Choose Display Spanning Tree Switch Settings or press d from the Spanning Tree Configuration Menu screen ...

Страница 162: ...est path cost to the root bridge Default Value 0 Range Unit 0 Port 28 Root Path Cost Indicates the path cost from this switch port to the root bridge Default Value 0 Range Not applicable Hello Time Indicates the Actual Hello Interval the amount of time between transmissions of configuration Bridge Protocol Data Units BPDUs that the root bridge is currently using Note that all bridges participating...

Страница 163: ...ameter value becomes the Actual Hello Interval parameter value for all bridges participating in the spanning tree network See also Hello Time Default Value 2 seconds Range 1 to 10 seconds Bridge Maximum Age Time Specifies the maximum age in seconds that a Hello message can attain before it is discarded This parameter specified by management for this bridge takes effect only when the bridge becomes...

Страница 164: ... user at a remote console terminal to communicate with the BayStack 420 Switch as if the console terminal were directly connected to it You can have up to four active Telnet sessions at one time To open the TELNET Configuration screen Figure 75 TELNET Configuration screen Choose TELNET Configuration or press t from the main menu ...

Страница 165: ...rminated Default Value 15 minutes Range 0 to 60 minutes 0 indicates no timeout Event Logging Specifies the types of events that will be displayed in the Event Log screen see System Log screen on page 145 Default Value All Range All None Accesses Failures Description All Logs the following Telnet events to the Event Log screen TELNET connect Indicates the IP address and access mode of a Telnet sess...

Страница 166: ...IP address the connection is allowed For example a connection would be allowed with the following settings Remote IP address 192 0 1 5 Allowed Source IP Address 192 0 1 0 Allowed Source Mask 255 255 255 0 Default Value 0 0 0 0 no IP mask assigned Range Four octet dotted decimal notation where each octet is represented as a decimal value separated by a decimal point Caution Do not interrupt power t...

Страница 167: ... To open the Software Download screen You can monitor the software download process by observing the LEDs see LED Indications during the download process on page 169 Precaución No interrumpa la alimentación del dispositivo durante el proceso de descarga del software Si lo hace puede alterar la imagen de la programación firmware Attenzione Non interrompere l alimentazione elettrica al dispositivo d...

Страница 168: ...ge load file name NOTE Certain software releases may require you to download two images the boot code image and the agent image For proper operation of the switch the new boot code image must be downloaded before the agent image is downloaded Default Value Zero length string Range An ASCII string of up to 30 printable characters BayStack 420 Diagnostics Filename The BayStack 420 Switch diagnostics...

Страница 169: ...ss assigned Range Four octet dotted decimal notation where each octet is represented as a decimal value separated by a decimal point Start TFTP Load of New Image Specifies whether to start the download of the switch software image default is No Use the spacebar to toggle the selection to Yes Press Enter to initiate the software download process NOTE The software download process can take up to 60 ...

Страница 170: ...r stack using this feature see Requirements on page 172 You must set up the file on your TFTP server and set the filename read write permission to enabled before you can save the configuration parameters Although most configuration parameters are saved to the configuration file certain parameters are not saved see Table 41 on page 172 To open the Configuration File Download Upload screen Figure 77...

Страница 171: ...t Value 0 0 0 0 no IP address assigned Range Four octet dotted decimal notation where each octet is represented as a decimal value separated by a decimal point Copy Configuration Image to Server Specifies whether to copy the presently configured switch stack parameters to the specified TFTP server default is No Use the spacebar to toggle the selection to Yes Press Enter to initiate the process Def...

Страница 172: ...d to configure other stacks that have the same number of switches firmware version model types and physical IDs as the stack the donor stack unit resides in Reconfigured stacks are configured according to the unit order number of the donor unit For example the configuration file parameters from a donor unit with physical ID x are used to reconfigure the unit with physical ID x Table 41 describes c...

Страница 173: ...e BayStack 420 Switch For example because LEDs provide visual indications of certain problems see Interpreting the LEDs on page 173 to understand the various states Table 42 that your switch LEDs can exhibit during normal operation For more help in determining the problem Diagnosing and correcting problems on page 175 describes symptoms and corrective actions Table 43 you can perform to resolve sp...

Страница 174: ...stream unit Base Base mode Green On The switch is configured as the stack base unit Off The switch is not configured as the stack base unit or is in standalone mode Amber Due to a stacking error the unit is unable to maintain the stack connection 10 100 Link Activity 10 100 Mb s port speed indicator Green On The corresponding port is set to operate at 100 Mb s and the link is good Amber On The cor...

Страница 175: ... To avoid bodily injury from hazardous electrical current never remove the top cover of the device There are no user serviceable components inside Vorsicht Um Verletzungsgefahr durch einen elektrischen Stromschlag auszuschließen nehmen Sie niemals die obere Abdeckung vom Gerät ab Im Geräteinnern befinden sich keine Komponenten die vom Benutzer gewartet werden können Avertissement Pour éviter tout ...

Страница 176: ...rente non rimuovere mai il coperchio superiore del dispositivo I componenti interni non possono essere manipolati dall utente Table 43 Corrective actions Symptom Probable cause Corrective action All LEDs are off The switch is not receiving AC power Verify that the AC power cord is fastened securely at both ends and that power is available at the AC power outlet The fans are not operating or the ai...

Страница 177: ...k 420 Switch negotiates port speeds according to the IEEE 802 3u autonegotiating standard The switch adjusts autonegotiates its port speed and duplex mode to match the best service provided by the connected station up to 100 Mb s in full duplex mode as follows If the connected station uses a form of autonegotiation that is not compatible with the IEEE 802 3u autonegotiating standard the BayStack 4...

Страница 178: ...d Duplex field to match the speed duplex mode of the connected station see Table 24 on page 130 You may have to try several settings before you find the correct speed duplex mode of the connected station If the problem persists 1 Disable the autonegotiation feature at the connected station 2 Manually set the speed duplex mode of the connected station to the same speed duplex mode you have manually...

Страница 179: ...eters for the BayStack 420 Switch Table 44 Environmental specifications Parameter Operating specification Storage specification Temperature 0 to 40 C 32 to 104 F 25 to 70 C 13 to 158 F Humidity 85 maximum relative humidity noncondensing 95 maximum relative humidity noncondensing Altitude 3024 m 10 000 ft 3024 m 10 000 ft Table 45 Electrical parameters Parameter Electrical specification Input Volta...

Страница 180: ...0 32 cm Weight 6 2 lb 2 82 kg Table 47 Performance specifications Parameter Specifications Frame Forward Rate 64 byte packets Up to 3 2 million packets per second pps maximum learned unicast traffic 5 1 million packets per second pps in a stack configuration Port Forwarding Filtering Performance 64 byte packets For 10 Mb s 14 880 pps maximum For 100 Mb s 148 810 pps maximum Address Database Size 8...

Страница 181: ...e protocol Safety agency certification The safety certifications follow for the BayStack 420 Switch UL Listed UL 1950 IEC 950 EN60950 CB report with all national deviations C22 2 No 950 CUL UL 94 V1 flammability requirements for PC board NOM NOM 019 Electromagnetic emissions The electromagnetic emission standards for the BayStack 420 Switch US CFR47 Part 15 Subpart B Class A Canada ICES 003 Issue ...

Страница 182: ...182 Appendix A Technical specifications 209418 A Electromagnetic immunity The BayStack 420 Switch meets the EN50082 1 1997 standard ...

Страница 183: ... to allow Gigabit Ethernet ports to link with fiber optic networks The following GBIC versions are available for the BayStack 420 Switch 1000BASE SX uses multimode fiber over distances up to 550 meters 1000BASE LX uses multimode fiber over distances up to 550 meters or single mode fiber over distances up to 10 kilometers 1000BASE XD uses single mode fiber over distances up to 50 km 1000BASE ZX use...

Страница 184: ...ortel Networks serial number a bar code a manufacturer s code an interface type and a part number Figure 80 Nortel label on a GBIC Note You must have the Nortel Networks serial number the manufacturer s code the interface type and the part number of your GBIC available when you contact a Nortel Networks service representative for troubleshooting purposes 9702FA GBIC model with extractor tabs GBIC ...

Страница 185: ...multimode fiber and single mode fiber listed is 6 5 feet 2 m 1000BASE SX The Model 1000BASE SX GBIC provides 1000BASE SX 850 nm short wavelength Gigabit Ethernet connectivity using SC duplex multimode fiber connectors The Model 1000BASE SX GBIC supports full duplex operation only Table 48 Nortel Networks GBIC models Model number Product number Description 1000BASE SX AA1419001 Short wavelength 550...

Страница 186: ...le mode fiber optic cabling The Model 1000BASE LX GBIC supports full duplex operation only Table 50 Model 1000BASE SX GBIC specifications Type Specifications Standards Conformity to the following standards 802 3z 1000BASE SX Connectors Duplex SC fiber optic connector Cabling 62 5 µm MMF optic cable 50 µm MMF optic cable Distance 902 ft 275 m using 62 5 µm MMF optic cable 1804 ft 550 m using 50 µm ...

Страница 187: ... MMF optic cable 1804 ft 550 m using 50 µm MMF optic cable 16405 ft 5 km using 10 µm SMF optic cable Wavelength 1300 nm Optical budget 10 5 dB Laser Transmitter Characteristics Minimum launch power 9 5 dBm Maximum launch power 3 dBm Receiver Characteristics Minimum receiver sensitivity 20 dBm Maximum input power 3 dBm Note When multimode fiber is used in long distance applications external removab...

Страница 188: ... Ethernet full duplex Connectors SC duplex single mode fiber optic connector Cabling Single mode fiber optic cable Distance Up to 50 km using single mode fiber cable depending on the quality of the fiber Optical budget 17 dB Laser Transmitter Characteristics Wavelength 1550 10 nm Maximum spectral width 0 2 nm Maximum launch power 0 dBm or 1 0 mW Minimum launch power into fiber 5 dBm or 0 3 mW Dist...

Страница 189: ...el 1000BASE ZX GBIC Table 53 Model 1000BASE ZX GBIC specifications Type Specifications Standards Conformity to the following standards 802 3z Ethernet full duplex Connectors SC duplex single mode fiber optic connector Cabling Single mode fiber optic cable Distance Up to 70 km using single mode fiber optic cable depending on the quality of the fiber Optical budget 22 dB Laser Transmitter Characteri...

Страница 190: ...Dispose of this product according to all national laws and regulations Note When shorter lengths of single mode fiber cable are used there is a risk of overloading the receiver It may be necessary to insert an in line optical attenuator in the link to prevent overloading as follows Insert a 10dB in line optical attenuator between the fiber optic cable plant and the receiving port on the 1000BASE Z...

Страница 191: ...n aus daß das Glasfaserkabel an eine Lichtquelle angeschlossen ist Avertissement L équipement à fibre optique peut émettre des rayons laser ou infrarouges qui risquent d entraîner des lésions oculaires Ne jamais regarder dans le port d un connecteur ou d un câble à fibre optique Toujours supposer que les câbles à fibre optique sont raccordés à une source lumineuse Advertencia Los equipos de fibra ...

Страница 192: ...do not force it Remove it turn it over and reinsert it Figure 81 Installing a GBIC 3 Press on the front of the GBIC until it snaps into place 4 Remove the rubber plug to connect cables To remove an installed GBIC 1 If the GBIC has spring tabs press in on the tabs on each side of the GBIC as you pull the GBIC out of the bay Figure 82 Figure 82 Removing a GBIC 2 If the GBIC has an extractor handle g...

Страница 193: ...onfiguring BayStack 420 Switch MultiLink Trunking use the flowchart in Figure 83 on page 194 as a quick configuration guide The flowchart refers you to the configuration rules appropriate for this feature To open the MultiLink Trunk Configuration screen Choose MultiLink Trunk Configuration or press t from the MultiLink Trunk Configuration Menu screen ...

Страница 194: ...ure STP field Enable Trunk Status field see MultiLink Trunking Configuration Rules Configure trunk members see MultiLink Trunking Configuration Rules BS45050A Are all trunk members configured Is trunk STP Enabled Yes Is trunk Enabled Yes No Done MultiLink Trunk Configuration screen Off page reference On page reference Key ...

Страница 195: ... 100BASE TX port connectors The RJ 45 port connectors Figure 84 are wired as MDI X ports to connect end stations without using crossover cables See MDI and MDI X devices on page 196 for information about MDI X ports For 10BASE T connections use Category 3 or higher UTP cable For 100BASE TX connections use only Category 5 UTP cable Figure 84 RJ 45 8 pin modular port connector 1 8 616EA ...

Страница 196: ... crossover function internally Ports that implement the crossover function internally are known as MDI X ports where X refers to the crossover function The following sections describe the use of straight through and crossover cables for connecting MDI and MDI X devices Table 54 RJ 45 port connector pin assignments Pin Signal Description 1 RX Receive Data 2 RX Receive Data 3 TX Transmit Data 4 Not ...

Страница 197: ...over cables Figure 85 Figure 85 MDI X to MDI cable connections MDI X to MDI X cable connections If you are connecting the BayStack 420 Switch to a device that also implements MDI X ports use a crossover cable Figure 86 1 8 1 8 8 1 8 1 RX RX TX TX TX TX RX RX MDI X port Business Policy Switch 2000 End station Straight through cable MDI port T R T R 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 ...

Страница 198: ... signal outputs are always asserted the CD DTR RTS and RI signal inputs are not used This configuration enables a management station a PC or console terminal to connect directly to the switch using a straight through cable Figure 87 DB 9 Console port connector 1 8 1 8 8 1 8 1 RX RX TX TX RX RX TX TX MDI X port BayStack 420 Switch Switch or hub Crossover cable MDI X port T R T R 1 2 3 4 5 6 7 8 1 2...

Страница 199: ...in assignments Table 55 DB 9 Console port connector pin assignments Pin Signal Description 1 CD Carrier detect not used 2 TXD Transmit data output 3 RXD Receive data input 4 DTR Data terminal ready not used 5 GND Signal ground 6 DSR Not used 7 RTS Request to send not used 8 CTS Not used 9 RI Ring indicator not used Shell Chassis ground ...

Страница 200: ...200 Appendix D Connectors and pin assignments 209418 A ...

Страница 201: ...Band Stack IP Address 0 0 0 0 no IP address assigned In Band Switch IP Address 0 0 0 0 no IP address assigned In Band Subnet Mask 0 0 0 0 no subnet mask assigned Default Gateway 0 0 0 0 no IP address assigned Read Only Community String public SNMP Configuration screen on page 99 Read Write Community String private Trap IP Address 0 0 0 0 no IP address assigned Community String Zero length string A...

Страница 202: ...r by Ports NONE Learn by Ports NONE Current Learning Mode Not Learning Trunk blank field MAC Address Security Port Configuration screen on page 111 Security Disabled Port List blank field MAC Address Security Port Lists screens on page 113 Find an Address blank field MAC Address Security Table screens on page 118 MAC Address no address assigned Allowed Source blank field Display Create MAC Address...

Страница 203: ... Disabled Port Name Unit 1 Port 1 read only Unit 1 Port Configuration screen on page 129 Status Enabled for all ports Autonegotiation Enabled for all ports Speed Duplex 100Mbs Half when Autonegotiation is Disabled Trunk 1 to 6 depending on configuration status MultiLink Trunk Configuration Menu screen on page 133 Trunk Members Unit Port Blank field STP Learning Normal Trunk Mode Basic Trunk Status...

Страница 204: ...Console Read Write Stack Password secure Note The following two fields only appear when the switch is a participant in a stack configuration New Unit Number Current stack order Renumber Stack Units screen on page 154 Renumber units with new setting No Unit 1 Spanning Tree Port Configuration screen on page 158 Participation Normal Learning Priority 128 Path Cost 10 or 100 Bridge Priority 8000 read ...

Страница 205: ... nine fields 255 255 255 255 any address is allowed Allowed Source Mask 10 user configurable fields First field 0 0 0 0 no IP address assigned Remaining nine fields 255 255 255 255 any address is allowed Image Filename Zero length string Software Download screen on page 166 TFTP Server IP Address 0 0 0 0 no IP address assigned Start TFTP Load of New Image No Configuration Image Filename Zero lengt...

Страница 206: ...206 Appendix E Default settings 209418 A ...

Страница 207: ...le of a BootP configuration file that was extracted from a Nortel Networks EZ LAN network management application Note that other BootP daemons can use a configuration file with a different format Before using your switch BootP facility you must customize your BootP configuration file with the appropriate data Blank lines and lines beginning with are ignored Legend first field hostname ht hardware ...

Страница 208: ...OTPTAB TXT file the Bootp protocol assigns 037 to the client Global entries are defined that specify the parameters used by every device Note that hardware type ht is specified first in the global entry The following global entry is defined for an Ethernet device Note that this is where a client s subnet mask sm and default gateway gw are defined global1 ht ethernet hd c opt images sm 255 255 255 ...

Страница 209: ...field 168 Bridge Forward Delay field 163 Bridge Hello Time field 163 Bridge Maximum Age Time field 163 Bridge Priority field 162 Broadcasts field 143 Business Policy Switch front panel 26 C Clear All Port Statistics option 105 Collisions field 144 Comm Port Data Bits field 148 Comm Port Parity field 148 Comm Port Stop Bits field 148 Community String field 100 Configurable field 95 configuration ru...

Страница 210: ...s 38 Flooded Packets field 144 Forward Delay field 163 Frame Errors field 144 G GBIC cleaning 190 connectors 185 description 185 dimensions 185 disposal 190 handling 190 labels 184 Model 1000BASE LX 185 186 1000BASE SX 185 186 1000BASE XD 185 188 1000BASE ZX 185 189 specifications 185 storing 190 Gigabit Ethernet ports linking with fiber optic networks 27 183 H Hello Interval 162 163 Hello Time fi...

Страница 211: ... and a shared media hub 49 network protocol standards compatibility 181 O optical attenuators when to use 190 options Clear All Port Statistics 105 Console Comm Port Configuration 92 Display Event Log 92 Display Port Statistics 104 Display Spanning Tree Switch Settings 157 IP Configuration 91 Logout 93 MAC Address Table 104 MultiLink Trunk Configuration 104 Port Configuration 104 Port Mirroring Co...

Страница 212: ...ion 91 SNMP Configuration screen 99 software download process 169 image upgrades 38 Software Download option 92 Spanning Tree Configuration Menu 156 Spanning Tree Configuration option 92 Spanning Tree Port Configuration option 157 Spanning Tree Port Configuration screen 158 Spanning Tree Switch Settings screen 161 specifications GBIC 185 specifications Model 1000BASE LX 186 1000BASE SX 186 1000BAS...

Страница 213: ...ame 55 untagged member 56 user_priority 56 VLAN identifier VID 55 VLAN port members 55 TELNET Access field 165 TELNET Configuration option 92 TELNET Configuration screen 164 text conventions 20 TFTP Server IP Address field 169 171 Total Octets field 143 Trap IP Address fields 100 Trivial File Transfer Protocol TFTP software download 167 troubleshooting 184 port interface 177 power up sequence 176 ...

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