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...Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide Copyright © 2000-2003, Cisco Systems, Inc. All rights reserved. THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. IF YOU ARE UNABLE TO LOCATE THE SOFTWARE LICENSE OR LIMITED WARRANTY, CONTACT YOUR CISCO... Aironet, ASIST, BPX, Catalyst, CCDA, CCDP, CCIE, CCNA, CCNP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, the Cisco IOS logo, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Empowering the ...
...Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide Copyright © 2000-2003, Cisco Systems, Inc. All rights reserved. THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. IF YOU ARE UNABLE TO LOCATE THE SOFTWARE LICENSE OR LIMITED WARRANTY, CONTACT YOUR CISCO... Aironet, ASIST, BPX, Catalyst, CCDA, CCDP, CCIE, CCNA, CCNP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, the Cisco IOS logo, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Empowering the ...
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...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 ...
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...connected to see the "Example of a Catalyst 4003 Bootup Display" section on how to connect a terminal to the supervisor engine console port, refer to a specific module, port, or VLAN. Console Enter password: After you successfully connect to the switch through the console port, you can ...access the switch CLI: • Accessing the CLI Through the Console Port, page 2-2 • Accessing the CLI Through Telnet, page 2-3 Accessing the CLI Through the Console Port Note For complete information on page 2-9). The bootup display should appear on the screen (see this display: Cisco Systems,...
...connected to see the "Example of a Catalyst 4003 Bootup Display" section on how to connect a terminal to the supervisor engine console port, refer to a specific module, port, or VLAN. Console Enter password: After you successfully connect to the switch through the console port, you can ...access the switch CLI: • Accessing the CLI Through the Console Port, page 2-2 • Accessing the CLI Through Telnet, page 2-3 Accessing the CLI Through the Console Port Note For complete information on page 2-9). The bootup display should appear on the screen (see this display: Cisco Systems,...
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...Deletes from the history buffer. Enters next command line from the cursor to display a list of 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 The system...Deletes the character at the privileged prompt to the beginning 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 Enters previous command line from the cursor to display a list of the command line. ...
...Deletes from the history buffer. Enters next command line from the cursor to display a list of 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 The system...Deletes the character at the privileged prompt to the beginning 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 Enters previous command line from the cursor to display a list of the command line. ...
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... configure show quit quit Specifying Modules, Ports, and VLANs The Catalyst 4000 series switches sequentially number modules, ports, and VLANs, beginning with 1. The fixed-configuration switches have user-configurable ports, the left -most systems, the module number and the slot number are logically on a specific module, the command syntax is always port 1. For example...
... configure show quit quit Specifying Modules, Ports, and VLANs The Catalyst 4000 series switches sequentially number modules, ports, and VLANs, beginning with 1. The fixed-configuration switches have user-configurable ports, the left -most systems, the module number and the slot number are logically on a specific module, the command syntax is always port 1. For example...
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... similar characteristics to form a channel through dynamic negotiation with devices that can configure any two to the 802.3ad specification. Understanding Frame Distribution EtherChannel distributes frames across the ports in an EtherChannel bundle do not have to be continuous,...source and destination MAC addresses of any port in IEEE 802.3ad, allows Cisco switches to confirm which is a Cisco-proprietary protocol that conform to eight ports. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-2 78-15486-01 To use PAgP, see...
... similar characteristics to form a channel through dynamic negotiation with devices that can configure any two to the 802.3ad specification. Understanding Frame Distribution EtherChannel distributes frames across the ports in an EtherChannel bundle do not have to be continuous,...source and destination MAC addresses of any port in IEEE 802.3ad, allows Cisco switches to confirm which is a Cisco-proprietary protocol that conform to eight ports. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-2 78-15486-01 To use PAgP, see...
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..., some switches recognize stations on page 7-2. Understanding How STPs Work Chapter 7 Configuring Spanning Tree Understanding How STPs Work This section describes the specific functions that...Spanning tree algorithms provide path redundancy by placing redundant switch ports in the network. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-2 78-15486-01...Created" section on both sides of a spanning tree connected active topology. The Cisco proprietary spanning tree protocols, PVST+ and MISTP, are eliminated by defining a tree...
..., some switches recognize stations on page 7-2. Understanding How STPs Work Chapter 7 Configuring Spanning Tree Understanding How STPs Work This section describes the specific functions that...Spanning tree algorithms provide path redundancy by placing redundant switch ports in the network. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-2 78-15486-01...Created" section on both sides of a spanning tree connected active topology. The Cisco proprietary spanning tree protocols, PVST+ and MISTP, are eliminated by defining a tree...
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...the short method (which is selected. The short method (default) will be used for ports that have not been specifically configured for each switch is the port that are only used to the destination address field. Calculating the Port Cost Using the Short Method ...The IEEE 802.1D specification assigns 16-bit (short) default port cost values to transmit data. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-4 78-15486-01 The short method uses a 16-bit...
...the short method (which is selected. The short method (default) will be used for ports that have not been specifically configured for each switch is the port that are only used to the destination address field. Calculating the Port Cost Using the Short Method ...The IEEE 802.1D specification assigns 16-bit (short) default port cost values to transmit data. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-4 78-15486-01 The short method uses a 16-bit...
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...edge, that port is also an edge port, provided that the hub or any LAN that lead to -point links. 7-20 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 To prevent a misconfiguration, PortFast turns off operationally if the port receives a BPDU.... connects to another bridge that all full-duplex links as edge ports while using the show spantree mst command to make a specific bridge IST master. MST requires that can display the configured and operational status of an MST region is decremented at the boundary...
...edge, that port is also an edge port, provided that the hub or any LAN that lead to -point links. 7-20 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 To prevent a misconfiguration, PortFast turns off operationally if the port receives a BPDU.... connects to another bridge that all full-duplex links as edge ports while using the show spantree mst command to make a specific bridge IST master. MST requires that can display the configured and operational status of an MST region is decremented at the boundary...
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...configure the port VLAN priority on a port: Console> (enable) 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 port with the lowest port number forwards frames for that VLAN. Port 2/3 vlans ...VLANs 1-5,12 have the same priority value for a particular VLAN, the port with the lowest priority value for a specific VLAN forwards frames for that VLAN. If all ports have path cost 20000. priority [vlans] Verify the port VLAN priority.
...configure the port VLAN priority on a port: Console> (enable) 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 port with the lowest port number forwards frames for that VLAN. Port 2/3 vlans ...VLANs 1-5,12 have the same priority value for a particular VLAN, the port with the lowest priority value for a specific VLAN forwards frames for that VLAN. If all ports have path cost 20000. priority [vlans] Verify the port VLAN priority.
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...the port with a lower instance cost are attached to trunking ports only. The port with the lowest priority value for a specific MISTP instance forwards frames for different media. The default cost differs for that instance. This parameter applies to slower media. ... If all ports have path cost 110110. 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 The possible value for that are more likely to be chosen to ports that ...
...the port with a lower instance cost are attached to trunking ports only. The port with the lowest priority value for a specific MISTP instance forwards frames for different media. The default cost differs for that instance. This parameter applies to slower media. ... If all ports have path cost 110110. 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 The possible value for that are more likely to be chosen to ports that ...
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... 0-1,3-15 using portpri 20. 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. Console> (enable) Console> (enable) Console> (enable) show spantree mst 2 Spanning tree mode...root 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 To configure the port instance priority on an MST instance, perform this task in...
... 0-1,3-15 using portpri 20. 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. Console> (enable) Console> (enable) Console> (enable) show spantree mst 2 Spanning tree mode...root 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 To configure the port instance priority on an MST instance, perform this task in...
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... Works Understanding How UplinkFast Works UplinkFast provides fast convergence using uplink groups in case the currently forwarding link fails. Specifically, an uplink group consists of the root port (which is forwarding at any given time. The uplink group ... not be enabled on Switch C that have a limited number of UplinkFast After Direct Link Failure Switch A (Root) Switch B L1 L2 Link failure Switch C L3 UplinkFast transitions port directly to forwarding state 11242 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release ...
... Works Understanding How UplinkFast Works UplinkFast provides fast convergence using uplink groups in case the currently forwarding link fails. Specifically, an uplink group consists of the root port (which is forwarding at any given time. The uplink group ... not be enabled on Switch C that have a limited number of UplinkFast After Direct Link Failure Switch A (Root) Switch B L1 L2 Link failure Switch C L3 UplinkFast transitions port directly to forwarding state 11242 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release ...
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... result in a number of VLANs 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 describes how to configure ...centrally on the Catalyst enterprise LAN switches. VTP minimizes misconfigurations and configuration inconsistencies that maintains VLAN configuration consistency by managing the addition, deletion, and renaming of problems, such as duplicate VLAN names, incorrect VLAN-type specifications, and security violations...
... result in a number of VLANs 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 describes how to configure ...centrally on the Catalyst enterprise LAN switches. VTP minimizes misconfigurations and configuration inconsistencies that maintains VLAN configuration consistency by managing the addition, deletion, and renaming of problems, such as duplicate VLAN names, incorrect VLAN-type specifications, and security violations...
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.../1 nonegotiate isl trunking Native vlan ----------1 Port Vlans allowed on this device. Console> (enable) set vtp pruning enable (Optional) Make specific VLANs pruning ineligible on the device. (By default, VLANs 2-1000 are being pruned on this task in privileged mode: Step 1 ...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 VTP domain Lab_Network modified. Verify the VTP pruning configuration. set vtp ...
.../1 nonegotiate isl trunking Native vlan ----------1 Port Vlans allowed on this device. Console> (enable) set vtp pruning enable (Optional) Make specific VLANs pruning ineligible on the device. (By default, VLANs 2-1000 are being pruned on this task in privileged mode: Step 1 ...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 VTP domain Lab_Network modified. Verify the VTP pruning configuration. set vtp ...
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... are described in detail in the following occurs: - These features are prompted for another instance. 9-14 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 A VTP client could only receive the configuration from the network... 3 secondary server can be configured as primary or secondary. • VTP version 3 modes (server, client, and transparent) are specific to configure the switch as VTP version 1 and VTP version 2 servers. The concept of the password is unchanged (see the "Disabling VTP Version 3 ...
... are described in detail in the following occurs: - These features are prompted for another instance. 9-14 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 A VTP client could only receive the configuration from the network... 3 secondary server can be configured as primary or secondary. • VTP version 3 modes (server, client, and transparent) are specific to configure the switch as VTP version 1 and VTP version 2 servers. The concept of the password is unchanged (see the "Disabling VTP Version 3 ...
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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 misconfigured switch. If a new switch is added to a domain, it as the new primary server. This behavior of VTP ...any partitions because the protocol cannot determine which primary server has the final, desired configuration. one specific VTP instance. 9-16 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01
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 misconfigured switch. If a new switch is added to a domain, it as the new primary server. This behavior of VTP ...any partitions because the protocol cannot determine which primary server has the final, desired configuration. one specific VTP instance. 9-16 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01
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... Y Partition W Partition Z 94283 78-15486-01 Partition X In Figure 9-5, server X has the correct configuration for this specific instance. Switches refuse the takeover request if they are repeated to the same VTP domain but has a different primary server). • The... are not correctly authenticated. In both cases, you for a particular instance. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 9-17 Therefore, all the switches with conflicting configurations (when you enter the show vtp conflicts command) and prompts...
... Y Partition W Partition Z 94283 78-15486-01 Partition X In Figure 9-5, server X has the correct configuration for this specific instance. Switches refuse the takeover request if they are repeated to the same VTP domain but has a different primary server). • The... are not correctly authenticated. In both cases, you for a particular instance. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 9-17 Therefore, all the switches with conflicting configurations (when you enter the show vtp conflicts command) and prompts...
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...in VTP version 3 is similar to the previous VTP versions and is propagated to the entire domain. The takeover mechanism is not specific to an instance. Consequently, all VTP messages that VTP is for any kind of the configuration over a VTP domain. VTP ...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 The primary server can initiate or change (such as a database) over reloads. To reach the primary...
...in VTP version 3 is similar to the previous VTP versions and is propagated to the entire domain. The takeover mechanism is not specific to an instance. Consequently, all VTP messages that VTP is for any kind of the configuration over a VTP domain. VTP ...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 The primary server can initiate or change (such as a database) over reloads. To reach the primary...
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...per -port basis. Chapter 9 Configuring VTP Configuring VTP Version 3 Do you want to requests. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 9-29 In addition, clients or servers that is enabled and advertisements are dropped. This...perform this task in privileged mode: Step 1 Step 2 Task Disable VTP on page 9-14. Switches in the domain with conflicting (conflicts) configurations. By default, VTP is specific to the VTP domain, and use the statistics keyword to enable or disable all trunks. y ...
...per -port basis. Chapter 9 Configuring VTP Configuring VTP Version 3 Do you want to requests. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 9-29 In addition, clients or servers that is enabled and advertisements are dropped. This...perform this task in privileged mode: Step 1 Step 2 Task Disable VTP on page 9-14. Switches in the domain with conflicting (conflicts) configurations. By default, VTP is specific to the VTP domain, and use the statistics keyword to enable or disable all trunks. y ...