Software Guide
Page 2
...Cisco Arrow logo, the Cisco Powered Network mark, Cisco Unity, Follow Me Browsing, FormShare, and StackWise are service marks of Cisco Systems, Inc.; and certain other company. (0304R) Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide Copyright © 2000-2003, Cisco Systems, Inc. The use of Cisco... Web site are registered trademarks of their respective owners. THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. CISCO AND THE ABOVE-NAMED SUPPLIERS DISCLAIM ALL WARRANTIES, EXPRESSED OR ...
...Cisco Arrow logo, the Cisco Powered Network mark, Cisco Unity, Follow Me Browsing, FormShare, and StackWise are service marks of Cisco Systems, Inc.; and certain other company. (0304R) Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide Copyright © 2000-2003, Cisco Systems, Inc. The use of Cisco... Web site are registered trademarks of their respective owners. THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. CISCO AND THE ABOVE-NAMED SUPPLIERS DISCLAIM ALL WARRANTIES, EXPRESSED OR ...
Software Guide
Page 17
...or Disabling the "Cisco Systems Console" Telnet Login Banner 27-5 Defining and Using Command Aliases 27-6 Defining and Using IP Aliases 27-7 Configuring Permanent and Static ARP Entries 27-8 Configuring Static Routes 27-9 Scheduling a System Reset 27-10 Scheduling a Reset at a Specific Time 27-10... Scheduling a Reset Within a Specified Amount of Time 27-11 Generating System Status Reports for Tech Support 27-12 Power Management 28-1 Understanding How Power Management Works on the Catalyst 4500 Series Switches 28-1 Power Management Overview 28-2 ...
...or Disabling the "Cisco Systems Console" Telnet Login Banner 27-5 Defining and Using Command Aliases 27-6 Defining and Using IP Aliases 27-7 Configuring Permanent and Static ARP Entries 27-8 Configuring Static Routes 27-9 Scheduling a System Reset 27-10 Scheduling a Reset at a Specific Time 27-10... Scheduling a Reset Within a Specified Amount of Time 27-11 Generating System Status Reports for Tech Support 27-12 Power Management 28-1 Understanding How Power Management Works on the Catalyst 4500 Series Switches 28-1 Power Management Overview 28-2 ...
Software Guide
Page 36
... the CLI might apply to the entire system or to a specific module, port, or VLAN. Use clear commands (or in some cases, use normal-mode commands to monitor the switch or enter privileged mode to the switch through the console port, you can access the CLI through the...Catalyst enterprise LAN switches are multi-module systems. Commands you first must connect a console terminal to the console port through an EIA/TIA-232 (RS-232) cable. Enter set commands) to the switch and that the terminal is not on . Accessing the Switch CLI You can use set commands to see this display: Cisco...
... the CLI might apply to the entire system or to a specific module, port, or VLAN. Use clear commands (or in some cases, use normal-mode commands to monitor the switch or enter privileged mode to the switch through the console port, you can access the CLI through the...Catalyst enterprise LAN switches are multi-module systems. Commands you first must connect a console terminal to the console port through an EIA/TIA-232 (RS-232) cable. Enter set commands) to the switch and that the terminal is not on . Accessing the Switch CLI You can use set commands to see this display: Cisco...
Software Guide
Page 39
... to display a list of commands that begin with co, as VT100s. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 2-5 The system displays all commands that start with a specific set ip Set IP Permit List Set ICMP redirect enable/disable Set IP routing table entry ... example, enter co? Enters next command line from the history buffer. Moves the cursor back one character. Command-Line Editing The switch CLI supports a number of the command line. Ctrl-F or the Right Arrow key1 Moves the cursor forward one character.
... to display a list of commands that begin with co, as VT100s. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 2-5 The system displays all commands that start with a specific set ip Set IP Permit List Set ICMP redirect enable/disable Set IP routing table entry ... example, enter co? Enters next command line from the history buffer. Moves the cursor back one character. Command-Line Editing The switch CLI supports a number of the command line. Ctrl-F or the Right Arrow key1 Moves the cursor forward one character.
Software Guide
Page 41
... many commands, you must refer to designate ports and port ranges. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 2-7 To designate a specific port on these switches, you can enter lists of ports. The fixed-configuration switches have two modules but only one screen To quit from the More program Keystrokes...
... many commands, you must refer to designate ports and port ranges. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 2-7 To designate a specific port on these switches, you can enter lists of ports. The fixed-configuration switches have two modules but only one screen To quit from the More program Keystrokes...
Software Guide
Page 76
... with up to eight compatibly configured Fast or Gigabit Ethernet ports on Cisco switches and those switches released by the spanning tree feature, the maximum supported number of channels..."Understanding the PAgP" section on your hardware supports EtherChannel, and to the 802.3ad specification. Depending on page 6-5. All ports in a channel based on page 6-16. If a... and Restrictions" section on page 6-3 and Chapter 11, "Configuring VLAN Trunks on the Catalyst 4500 series switches, you can configure both Fast and Gigabit EtherChannel bundles as trunk links. Hardware Support for...
... with up to eight compatibly configured Fast or Gigabit Ethernet ports on Cisco switches and those switches released by the spanning tree feature, the maximum supported number of channels..."Understanding the PAgP" section on your hardware supports EtherChannel, and to the 802.3ad specification. Depending on page 6-5. All ports in a channel based on page 6-16. If a... and Restrictions" section on page 6-3 and Chapter 11, "Configuring VLAN Trunks on the Catalyst 4500 series switches, you can configure both Fast and Gigabit EtherChannel bundles as trunk links. Hardware Support for...
Software Guide
Page 98
...Spanning Tree Understanding How STPs Work This section describes the specific functions that are common to each port depending on ....1D STP is elected for information about other switches in the switched network are as bridge protocol data units (BPDUs). Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-2 78-15486-...the spanning tree topology and reestablishes the link by placing redundant switch ports in a network while preventing undesirable loops. The Cisco proprietary spanning tree protocols, PVST+ and MISTP, are based on...
...Spanning Tree Understanding How STPs Work This section describes the specific functions that are common to each port depending on ....1D STP is elected for information about other switches in the switched network are as bridge protocol data units (BPDUs). Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-2 78-15486-...the spanning tree topology and reestablishes the link by placing redundant switch ports in a network while preventing undesirable loops. The Cisco proprietary spanning tree protocols, PVST+ and MISTP, are based on...
Software Guide
Page 100
... transmitted receive the BPDU. Calculating the Port Cost Using the Short Method The IEEE 802.1D specification assigns 16-bit (short) default port cost values to higher bandwidth ports by the switch for port cost. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-4 78-15486-01 A MAC frame conveying a BPDU sends the...
... transmitted receive the BPDU. Calculating the Port Cost Using the Short Method The IEEE 802.1D specification assigns 16-bit (short) default port cost values to higher bandwidth ports by the switch for port cost. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-4 78-15486-01 A MAC frame conveying a BPDU sends the...
Software Guide
Page 116
... If two or more bridges at the boundary of the region have a bridge. Enter the set a slightly lower bridge priority to make a specific bridge IST master. A port that all full-duplex links as the link is an edge port. MST requires that is connected to a nonbridging ... point-to-point links. Link Type You can set spantree mst link-type command to configure point-to-point links. 7-20 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 A port that connects to a hub is also an edge port, provided that ...
... If two or more bridges at the boundary of the region have a bridge. Enter the set a slightly lower bridge priority to make a specific bridge IST master. A port that all full-duplex links as the link is an edge port. MST requires that is connected to a nonbridging ... point-to-point links. Link Type You can set spantree mst link-type command to configure point-to-point links. 7-20 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 A port that connects to a hub is also an edge port, provided that ...
Software Guide
Page 123
... priority for that VLAN. Console> (enable Configuring the PVST+ Port VLAN Priority When the switch is in PVST+ mode, you can set spantree portvlancost 2/3 cost 20000 1-5,12 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-27 The possible port VLAN priority range is 32. Port ... . show config all . . . Console> (enable) show config all ports have the same priority value for a particular VLAN, the port with the lowest priority value for a specific VLAN forwards frames for a VLAN on a switch port.
... priority for that VLAN. Console> (enable Configuring the PVST+ Port VLAN Priority When the switch is in PVST+ mode, you can set spantree portvlancost 2/3 cost 20000 1-5,12 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-27 The possible port VLAN priority range is 32. Port ... . show config all . . . Console> (enable) show config all ports have the same priority value for a particular VLAN, the port with the lowest priority value for a specific VLAN forwards frames for a VLAN on a switch port.
Software Guide
Page 131
...spantree portinstancecost 1/1 cost 110110 2 Port 1/1 instances 1,3-16 have path cost 110110. Ports with the lowest priority value for a specific MISTP instance forwards frames for port instance cost is from 1-268435456. The default cost differs for that instance. The possible value... instance range is from 0-63. Command set spantree portinstancepri {mod/port} priority [instances] 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-35 Console> (enable) Configuring the MISTP Port Instance Priority You can configure ...
...spantree portinstancecost 1/1 cost 110110 2 Port 1/1 instances 1,3-16 have path cost 110110. Ports with the lowest priority value for a specific MISTP instance forwards frames for port instance cost is from 1-268435456. The default cost differs for that instance. The possible value... instance range is from 0-63. Command set spantree portinstancepri {mod/port} priority [instances] 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-35 Console> (enable) Configuring the MISTP Port Instance Priority You can configure ...
Software Guide
Page 149
...priority:32768, sys ID ext:2) Designated Root Cost 0 Remaining Hops 20 Designated Root Port 1/0 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-53 Port 6/1 MST Instances 0-1,3-15 using portpri 20. Verify the port instance priority... setting. If all ports have the same priority for an MST instance, the port with the lowest priority for a specific...
...priority:32768, sys ID ext:2) Designated Root Cost 0 Remaining Hops 20 Designated Root Port 1/0 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-53 Port 6/1 MST Instances 0-1,3-15 using portpri 20. Verify the port instance priority... setting. If all ports have the same priority for an MST instance, the port with the lowest priority for a specific...
Software Guide
Page 159
... have a limited number of active VLANs. This switchover takes approximately 1 to Switch C over link L1 and to 5 seconds. Specifically, an uplink group consists of the root port (which is connected to forwarding state 11242 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 8-3 Note UplinkFast is most useful in wiring...
... have a limited number of active VLANs. This switchover takes approximately 1 to Switch C over link L1 and to 5 seconds. Specifically, an uplink group consists of the root port (which is connected to forwarding state 11242 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 8-3 Note UplinkFast is most useful in wiring...
Software Guide
Page 177
...specifications, and security violations. This chapter consists of VLANs on the Catalyst enterprise LAN switches. Note For complete information on one switch and have those changes automatically communicated to all the other switches in this chapter, refer to the Catalyst 4500 Series, Catalyst 2948G, and Catalyst 2980G Switches... configuration changes centrally on configuring VLANs, see Chapter 10, "Configuring VLANs." 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 9-1 Configuring VTP CH A P T E R 9 This chapter...
...specifications, and security violations. This chapter consists of VLANs on the Catalyst enterprise LAN switches. Note For complete information on one switch and have those changes automatically communicated to all the other switches in this chapter, refer to the Catalyst 4500 Series, Catalyst 2948G, and Catalyst 2980G Switches... configuration changes centrally on configuring VLANs, see Chapter 10, "Configuring VLANs." 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 9-1 Configuring VTP CH A P T E R 9 This chapter...
Software Guide
Page 187
...(enable) show vtp domain Verify that the appropriate VLANs are pruning eligible.) clear vtp pruneeligible vlan_range (Optional) Make specific VLANs pruning eligible set vtp pruneeligible vlan_range on the particular device: Console> (enable) set vtp pruning enable This command... VTP pruning in the management domain should be pruned on trunk 16/1 1-1005,1025-4094 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 9-11 indicates dot1q-all features VTP domain Lab_Network modified Console> (enable) set...
...(enable) show vtp domain Verify that the appropriate VLANs are pruning eligible.) clear vtp pruneeligible vlan_range (Optional) Make specific VLANs pruning eligible set vtp pruneeligible vlan_range on the particular device: Console> (enable) set vtp pruning enable This command... VTP pruning in the management domain should be pruned on trunk 16/1 1-1005,1025-4094 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 9-11 indicates dot1q-all features VTP domain Lab_Network modified Console> (enable) set...
Software Guide
Page 190
...interact with the VTP domain, it is saved in the configuration; If you are prompted for another instance. 9-14 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 For more information on configuring passwords, see the "Disabling VTP Version 3 ... does not appear in plain text in the configuration. - If a trunk is connected to a switch or server that the server, client, and transparent modes are specific to configure the switch as VTP version 1 and VTP version 2 servers. VTP Version 3 Per-Port Configuration Note With ...
...interact with the VTP domain, it is saved in the configuration; If you are prompted for another instance. 9-14 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 For more information on configuring passwords, see the "Disabling VTP Version 3 ... does not appear in plain text in the configuration. - If a trunk is connected to a switch or server that the server, client, and transparent modes are specific to configure the switch as VTP version 1 and VTP version 2 servers. VTP Version 3 Per-Port Configuration Note With ...
Software Guide
Page 192
... of a temporarily disconnected part of the domain. For information on page 9-16. one specific VTP instance. 9-16 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Reconfiguring a Partitioned VTP Domain Partitioning of a... from accepting a conflicting configuration after the insertion of a misconfigured switch. Understanding How VTP Version 3 Works Figure 9-4 VTP Version 3: Partitioned VTP Domain Domain Cisco Primary Server X Domain Cisco Primary Server Y Chapter 9 Configuring VTP 94282 Partitions exist because ...
... of a temporarily disconnected part of the domain. For information on page 9-16. one specific VTP instance. 9-16 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Reconfiguring a Partitioned VTP Domain Partitioning of a... from accepting a conflicting configuration after the insertion of a misconfigured switch. Understanding How VTP Version 3 Works Figure 9-4 VTP Version 3: Partitioned VTP Domain Domain Cisco Primary Server X Domain Cisco Primary Server Y Chapter 9 Configuring VTP 94282 Partitions exist because ...
Software Guide
Page 193
... server for this risk). Switches refuse the takeover request if they are potentially stored on other primary servers in the domain will then lock onto primary server X and will synchronize their VTP configuration to reduce this specific instance. Chapter 9 Configuring ...to issue a takeover message from server X to the following : • The takeover erases conflicting configurations that instance. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 9-17 To reconfigure this is not the case, it might be due to the entire ...
... server for this risk). Switches refuse the takeover request if they are potentially stored on other primary servers in the domain will then lock onto primary server X and will synchronize their VTP configuration to reduce this specific instance. Chapter 9 Configuring ...to issue a takeover message from server X to the following : • The takeover erases conflicting configurations that instance. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 9-17 To reconfigure this is not the case, it might be due to the entire ...
Software Guide
Page 195
... 1 and VTP Version 2, page 9-21 • Limitations, page 9-21 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 9-19 The primary server state is for the feature happens through VTP whether or not the switch is not specific to an instance. In both modes, you must issue a successful takeover from...
... 1 and VTP Version 2, page 9-21 • Limitations, page 9-21 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 9-19 The primary server state is for the feature happens through VTP whether or not the switch is not specific to an instance. In both modes, you must issue a successful takeover from...
Software Guide
Page 205
...sent on the port, and any VTP packets that do not have a valid database do not respond to requests. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 9-29 This capability might be used on page 9-14. Console> (enable) VTP Version 3 show ...Port Configuration" section on trunks leading to show port vtp 3 Port VTP Status 3/1 disabled 3/2 disabled 3/3 enabled 3/4 enabled . . . By default, VTP is specific to the VTP domain, and use the statistics keyword to continue (y/n) [n]? Verify the change.
...sent on the port, and any VTP packets that do not have a valid database do not respond to requests. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 9-29 This capability might be used on page 9-14. Console> (enable) VTP Version 3 show ...Port Configuration" section on trunks leading to show port vtp 3 Port VTP Status 3/1 disabled 3/2 disabled 3/3 enabled 3/4 enabled . . . By default, VTP is specific to the VTP domain, and use the statistics keyword to continue (y/n) [n]? Verify the change.