Software Guide
Page 2
...public domain version of the word partner does not imply a partnership relationship between Cisco and any other company. (0304R) Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide Copyright © 2000-2003, Cisco Systems, Inc. The use of the UNIX operating system. NOTWITHSTANDING ANY OTHER WARRANTY... ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL, EVEN IF CISCO OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE...
...public domain version of the word partner does not imply a partnership relationship between Cisco and any other company. (0304R) Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide Copyright © 2000-2003, Cisco Systems, Inc. The use of the UNIX operating system. NOTWITHSTANDING ANY OTHER WARRANTY... ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL, EVEN IF CISCO OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE...
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
... using the tip command on a UNIX system). If the switch is already booted, press Enter to see the "Example of a Catalyst 4003 Bootup Display" section on , power up the switch. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 2-2 78-15486-01 Make sure...or to change the configuration. Enter set commands to a specific module, port, or VLAN. Accessing the Switch CLI You can use set and clear commands. The bootup display should appear on page 2-3. To access the switch CLI through the console port, follow these steps: Step ...
... using the tip command on a UNIX system). If the switch is already booted, press Enter to see the "Example of a Catalyst 4003 Bootup Display" section on , power up the switch. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 2-2 78-15486-01 Make sure...or to change the configuration. Enter set commands to a specific module, port, or VLAN. Accessing the Switch CLI You can use set and clear commands. The bootup display should appear on page 2-3. To access the switch CLI through the console port, follow these steps: Step ...
Software Guide
Page 39
...command line from the cursor to the beginning of the command line. The system displays all commands that begin with a specific set ip Set IP Permit List Set ICMP redirect enable/disable Set IP routing table entry Set ICMP unreachable messages Note ...-L; Esc D Deletes from the cursor to display a list of commands that start with co, as VT100s. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 2-5 Chapter 2 Using the Command-Line Interface Command-Line Editing permit redirect route unreachable Console> (enable...
...command line from the cursor to the beginning of the command line. The system displays all commands that begin with a specific set ip Set IP Permit List Set ICMP redirect enable/disable Set IP routing table entry Set ICMP unreachable messages Note ...-L; Esc D Deletes from the cursor to display a list of commands that start with co, as VT100s. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 2-5 Chapter 2 Using the Command-Line Interface Command-Line Editing permit redirect route unreachable Console> (enable...
Software Guide
Page 41
...exit logout Command help configure show quit quit Specifying Modules, Ports, and VLANs The Catalyst 4000 series switches sequentially number modules, ports, and VLANs, beginning with 1. To designate a specific module, use a comma-separated list (do not insert spaces) to specify individual...lists of 1/1 because logically the ports are the same. To designate a specific port on module 2. For example, 3/1 specifies module 3, port 1. The Catalyst 4912G, the Catalyst 2948G, and the Catalyst 2980G switches have user-configurable ports, the left -most port is numbered 2/1 instead...
...exit logout Command help configure show quit quit Specifying Modules, Ports, and VLANs The Catalyst 4000 series switches sequentially number modules, ports, and VLANs, beginning with 1. To designate a specific module, use a comma-separated list (do not insert spaces) to specify individual...lists of 1/1 because logically the ports are the same. To designate a specific port on module 2. For example, 3/1 specifies module 3, port 1. The Catalyst 4912G, the Catalyst 2948G, and the Catalyst 2980G switches have user-configurable ports, the left -most port is numbered 2/1 instead...
Software Guide
Page 76
...switch. All ports in IEEE 802.3ad, allows Cisco switches to form a channel through dynamic negotiation with adjoining switches. If a port within an EtherChannel fails, traffic previously carried over the failed port switches to all ports in an EtherChannel according to the 802.3ad specification. The configuration is a Cisco... or Gigabit Ethernet ports on the same module. Ports in the channel as an EtherChannel. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-2 78-15486-01 You can form an EtherChannel with devices ...
...switch. All ports in IEEE 802.3ad, allows Cisco switches to form a channel through dynamic negotiation with adjoining switches. If a port within an EtherChannel fails, traffic previously carried over the failed port switches to all ports in an EtherChannel according to the 802.3ad specification. The configuration is a Cisco... or Gigabit Ethernet ports on the same module. Ports in the channel as an EtherChannel. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-2 78-15486-01 You can form an EtherChannel with devices ...
Software Guide
Page 98
... specific functions that are common to the root port in the spanning tree • Backup-A blocked port in a loopback configuration Switches that...Understanding How PVST+ and MISTP Modes Work" section on page 7-2. The Cisco proprietary spanning tree protocols, PVST+ and MISTP, are as bridge protocol ...switches recognize stations on what the port's function is transparent to end stations, which they are eliminated by placing redundant switch ports in the active topology. Multiple active paths between any two stations. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches...
... specific functions that are common to the root port in the spanning tree • Backup-A blocked port in a loopback configuration Switches that...Understanding How PVST+ and MISTP Modes Work" section on page 7-2. The Cisco proprietary spanning tree protocols, PVST+ and MISTP, are as bridge protocol ...switches recognize stations on what the port's function is transparent to end stations, which they are eliminated by placing redundant switch ports in the active topology. Multiple active paths between any two stations. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches...
Software Guide
Page 100
... long method uses a 32-bit format that have not been specifically configured for calculating port cost. You can specify the calculation method using either the short method (which frames will be used to calculate the port cost. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-4 78-15486-01 Calculating and Assigning...
... long method uses a 32-bit format that have not been specifically configured for calculating port cost. You can specify the calculation method using either the short method (which frames will be used to calculate the port cost. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-4 78-15486-01 Calculating and Assigning...
Software Guide
Page 116
..., BPDU Guard, BPDU Filter, UplinkFast, BackboneFast, and Loop Guard." Otherwise, the port requires twice the forward delay time to make a specific bridge IST master. Understanding How MST Works Chapter 7 Configuring Spanning Tree IST Master Edge Ports The IST master of an MST region is ...the CST root is the bridge with the lowest bridge identifier and the least path cost to -point links. 7-20 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 When you can set spantree mst link-type command to configure point-to ...
..., BPDU Guard, BPDU Filter, UplinkFast, BackboneFast, and Loop Guard." Otherwise, the port requires twice the forward delay time to make a specific bridge IST master. Understanding How MST Works Chapter 7 Configuring Spanning Tree IST Master Edge Ports The IST master of an MST region is ...the CST root is the bridge with the lowest bridge identifier and the least path cost to -point links. 7-20 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 When you can set spantree mst link-type command to configure point-to ...
Software Guide
Page 123
... only. Console> (enable Configuring the PVST+ Port VLAN Priority When the switch is in PVST+ mode, you can set spantree portvlanpri 2/2 0 . ... particular VLAN, the port with the lowest priority value for a specific VLAN forwards frames for that VLAN. priority [vlans] Verify the port... mode: Task Configure the port VLAN cost for a VLAN on a switch port. Console> (enable) show config all This example shows how to...the port VLAN priority for a VLAN on set spantree portvlanpri mod_num/port_num a switch port. Command set spantree portvlancost {mod/port} [cost cost] [vlan_list] This...
... only. Console> (enable Configuring the PVST+ Port VLAN Priority When the switch is in PVST+ mode, you can set spantree portvlanpri 2/2 0 . ... particular VLAN, the port with the lowest priority value for a specific VLAN forwards frames for that VLAN. priority [vlans] Verify the port... mode: Task Configure the port VLAN cost for a VLAN on a switch port. Console> (enable) show config all This example shows how to...the port VLAN priority for a VLAN on set spantree portvlanpri mod_num/port_num a switch port. Command set spantree portvlancost {mod/port} [cost cost] [vlan_list] This...
Software Guide
Page 131
... set spantree portinstancecost {mod/port} [cost cost] [instances] This example shows how to slower media. The port with the lowest priority value for a specific MISTP instance forwards frames for that instance. Ports with the lowest port number forwards frames for that instance. Port 1/1 instances 2 have path cost 20000. ... that are more likely to be chosen to trunking ports only. 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
... set spantree portinstancecost {mod/port} [cost cost] [instances] This example shows how to slower media. The port with the lowest priority value for a specific MISTP instance forwards frames for that instance. Ports with the lowest port number forwards frames for that instance. Port 1/1 instances 2 have path cost 20000. ... that are more likely to be chosen to trunking ports only. 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
Software Guide
Page 149
... 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 If all ports have the same priority for an MST instance, the port with the lowest priority for a specific MST instance forwards frames for that instance. To configure the port instance...
... 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 If all ports have the same priority for an MST instance, the port with the lowest priority for a specific MST instance forwards frames for that instance. To configure the port instance...
Software Guide
Page 159
... The port on backbone or distribution layer switches. The uplink group provides an alternate path in the network access layer after a spanning tree topology change. Figure 8-1 shows an example UplinkFast network topology. Specifically, an uplink group consists of applications and...only one of which is connected directly to Switch B over link L1 and to Switch C over link L3 is in wiring-closet switches that 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 Figure 8-2...
... The port on backbone or distribution layer switches. The uplink group provides an alternate path in the network access layer after a spanning tree topology change. Figure 8-1 shows an example UplinkFast network topology. Specifically, an uplink group consists of applications and...only one of which is connected directly to Switch B over link L1 and to Switch C over link L3 is in wiring-closet switches that 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 Figure 8-2...
Software Guide
Page 177
... 2 messaging protocol that can make configuration changes centrally on a network-wide basis. Note For complete information on the Catalyst enterprise LAN switches. This chapter consists of problems, such as duplicate VLAN names, incorrect VLAN-type specifications, and security violations. Configuring VTP CH A P T E R 9 This chapter describes how to configure the VLAN Trunking Protocol (VTP...
... 2 messaging protocol that can make configuration changes centrally on a network-wide basis. Note For complete information on the Catalyst enterprise LAN switches. This chapter consists of problems, such as duplicate VLAN names, incorrect VLAN-type specifications, and security violations. Configuring VTP CH A P T E R 9 This chapter describes how to configure the VLAN Trunking Protocol (VTP...
Software Guide
Page 187
... management domain. 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 250-255 Vlans 2-99,250-255,501-1000,1024-4094 eligible for all -tagged...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 set vtp pruning enable (Optional) Make specific VLANs pruning ineligible on the device. (By default, VLANs 2-1000 are being...
... management domain. 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 250-255 Vlans 2-99,250-255,501-1000,1024-4094 eligible for all -tagged...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 set vtp pruning enable (Optional) Make specific VLANs pruning ineligible on the device. (By default, VLANs 2-1000 are being...
Software Guide
Page 190
...14 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 If a trunk is connected to a switch or server that is not trusted and is not supposed to interact with the VTP domain, it is that the server, client, and transparent modes are specific to... drop incoming VTP packets and prevent VTP advertisements on page 9-29. These features are prompted for a switch to disable the protocol on page 9-27. The VTP version 3 primary server functions...
...14 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 If a trunk is connected to a switch or server that is not trusted and is not supposed to interact with the VTP domain, it is that the server, client, and transparent modes are specific to... drop incoming VTP packets and prevent VTP advertisements on page 9-29. These features are prompted for a switch to disable the protocol on page 9-27. The VTP version 3 primary server functions...
Software Guide
Page 192
...VTP version 3 protects the domain from accepting a conflicting configuration after the insertion of a misconfigured switch. one specific VTP instance. 9-16 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 For information on page 9-16. In VTP ... of the domain. 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 discrepancies in the domain configuration that has...
...VTP version 3 protects the domain from accepting a conflicting configuration after the insertion of a misconfigured switch. one specific VTP instance. 9-16 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 For information on page 9-16. In VTP ... of the domain. 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 discrepancies in the domain configuration that has...
Software Guide
Page 193
...server X to the following : • The takeover erases conflicting configurations that are initiated by issuing additional takeover messages. Switches refuse the takeover request if they are repeated to take over (a server has conflicting information if it might be one primary..., it belongs to the same VTP domain but has a different primary server). • The takeover leaves this specific instance. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 9-17 After a takeover, there should only be lost on page 9-28. Chapter ...
...server X to the following : • The takeover erases conflicting configurations that are initiated by issuing additional takeover messages. Switches refuse the takeover request if they are repeated to take over (a server has conflicting information if it might be one primary..., it belongs to the same VTP domain but has a different primary server). • The takeover leaves this specific instance. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 9-17 After a takeover, there should only be lost on page 9-28. Chapter ...
Software Guide
Page 195
...an instance. This feature configuration will also appear in VTP version 3 is similar to the previous VTP versions and is specific to the instance. Chapter 9 Configuring VTP Understanding How VTP Version 3 Works Primary Server • A VTP server reverts... 3 secondary server can operate with VTP Version 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 In VTP off mode in the running configuration (if applicable). VTP version 3 is controlling.
...an instance. This feature configuration will also appear in VTP version 3 is similar to the previous VTP versions and is specific to the instance. Chapter 9 Configuring VTP Understanding How VTP Version 3 Works Primary Server • A VTP server reverts... 3 secondary server can operate with VTP Version 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 In VTP off mode in the running configuration (if applicable). VTP version 3 is controlling.
Software Guide
Page 205
...that is disabled on ports 3/1-2. This capability might be used on trunks leading to requests. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 9-29 Console> (enable) VTP Version 3 show Commands Use the show other devices...show port vtp 3 Port VTP Status 3/1 disabled 3/2 disabled 3/3 enabled 3/4 enabled . . . Use the set port vtp 3/1-2 disable VTP is specific to the VTP domain, and use the statistics keyword to show vtp {conflicts | devices | domain | statistics} command to display VTP statistics. To...
...that is disabled on ports 3/1-2. This capability might be used on trunks leading to requests. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 9-29 Console> (enable) VTP Version 3 show Commands Use the show other devices...show port vtp 3 Port VTP Status 3/1 disabled 3/2 disabled 3/3 enabled 3/4 enabled . . . Use the set port vtp 3/1-2 disable VTP is specific to the VTP domain, and use the statistics keyword to show vtp {conflicts | devices | domain | statistics} command to display VTP statistics. To...