Software Guide
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...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. All other countries. and certain other ... 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 Internet Generation, Enterprise/Solver, EtherChannel, EtherSwitch, Fast Step, ...
...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. All other countries. and certain other ... 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 Internet Generation, Enterprise/Solver, EtherChannel, EtherSwitch, Fast Step, ...
Software Guide
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... Administrative Groups and EtherChannel IDs 6-6 Configuring EtherChannel Using PAgP 6-6 Creating an EtherChannel 6-7 Defining an EtherChannel Administrative Group 6-7 Setting the EtherChannel Spanning Tree Port Cost 6-8 Setting the EtherChannel Spanning Tree Port VLAN Cost 6-9 Removing an EtherChannel Bundle 6-9 Displaying EtherChannel Configuration Information 6-10 Displaying EtherChannel Traffic Statistics 6-11 Displaying EtherChannel PAgP Statistics 6-12 EtherChannel Configuration Examples 6-12 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration...
... Administrative Groups and EtherChannel IDs 6-6 Configuring EtherChannel Using PAgP 6-6 Creating an EtherChannel 6-7 Defining an EtherChannel Administrative Group 6-7 Setting the EtherChannel Spanning Tree Port Cost 6-8 Setting the EtherChannel Spanning Tree Port VLAN Cost 6-9 Removing an EtherChannel Bundle 6-9 Displaying EtherChannel Configuration Information 6-10 Displaying EtherChannel Traffic Statistics 6-11 Displaying EtherChannel PAgP Statistics 6-12 EtherChannel Configuration Examples 6-12 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration...
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... LACP Statistics 6-21 Displaying EtherChannel Traffic Utilization 6-21 Disabling an EtherChannel 6-22 Displaying Spanning Tree-Related Information for EtherChannels 6-22 7 C H A P T E R Configuring Spanning Tree 7-1 Understanding How STPs Work 7-2 Understanding How a Topology Is Created 7-2 Understanding How a Switch or Port Becomes the Root Switch or Root Port 7-3 Understanding...-to-SST Interoperability 7-17 Common Spanning Tree 7-18 MST Instances 7-18 MST Configuration 7-18 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 vi 78-15486-01
... LACP Statistics 6-21 Displaying EtherChannel Traffic Utilization 6-21 Disabling an EtherChannel 6-22 Displaying Spanning Tree-Related Information for EtherChannels 6-22 7 C H A P T E R Configuring Spanning Tree 7-1 Understanding How STPs Work 7-2 Understanding How a Topology Is Created 7-2 Understanding How a Switch or Port Becomes the Root Switch or Root Port 7-3 Understanding...-to-SST Interoperability 7-17 Common Spanning Tree 7-18 MST Instances 7-18 MST Configuration 7-18 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 vi 78-15486-01
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...on a Trunk 11-6 Disabling a Trunk Port 11-7 Disabling VLAN 1 on a Trunk Link 11-8 Example VLAN Trunk Configurations 11-9 802.1Q Trunk over a Gigabit EtherChannel Link Example 11-9 Load-Sharing VLAN Traffic over Parallel Trunks Example 11-13 802.1Q Nonegotiate Trunk Configuration Example 11-19 Configuring Dynamic VLAN Membership... VMPS Clients 12-8 Monitoring VMPS 12-9 Maintaining VMPS 12-9 Configuring Static Ports 12-10 Troubleshooting VMPS and Dynamic Port VLAN Membership 12-11 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 x 78-15486-01
...on a Trunk 11-6 Disabling a Trunk Port 11-7 Disabling VLAN 1 on a Trunk Link 11-8 Example VLAN Trunk Configurations 11-9 802.1Q Trunk over a Gigabit EtherChannel Link Example 11-9 Load-Sharing VLAN Traffic over Parallel Trunks Example 11-13 802.1Q Nonegotiate Trunk Configuration Example 11-19 Configuring Dynamic VLAN Membership... VMPS Clients 12-8 Monitoring VMPS 12-9 Maintaining VMPS 12-9 Configuring Static Ports 12-10 Troubleshooting VMPS and Dynamic Port VLAN Membership 12-11 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 x 78-15486-01
Software Guide
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..., BPDU PortFast, UplinkFast, and BackboneFast features. Filter, UplinkFast, BackboneFast, and Loop Guard 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 xxiii Configuring Ethernet and Fast Ethernet Switching Describes how to configure Fast EtherChannel and and Gigabit EtherChannel Gigabit EtherChannel port bundles. Configuring Fast EtherChannel Describes how to configure Ethernet and Fast Ethernet...
..., BPDU PortFast, UplinkFast, and BackboneFast features. Filter, UplinkFast, BackboneFast, and Loop Guard 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 xxiii Configuring Ethernet and Fast Ethernet Switching Describes how to configure Fast EtherChannel and and Gigabit EtherChannel Gigabit EtherChannel port bundles. Configuring Fast EtherChannel Describes how to configure Ethernet and Fast Ethernet...
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...port_num]] 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 4-3 Chapter 4 Configuring Ethernet and Fast Ethernet Switching Configuring Ethernet and Fast ...Ethernet Ports Table 4-1 Ethernet and Fast Ethernet Default Configurations Feature Port enable state Port name Port priority Duplex mode Native VLAN Spanning tree port cost Fast EtherChannel...
...port_num]] 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 4-3 Chapter 4 Configuring Ethernet and Fast Ethernet Switching Configuring Ethernet and Fast ...Ethernet Ports Table 4-1 Ethernet and Fast Ethernet Default Configurations Feature Port enable state Port name Port priority Duplex mode Native VLAN Spanning tree port cost Fast EtherChannel...
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... exchange flow-control parameters, remote fault information, and duplex information (even though Cisco Gigabit Ethernet ports only support full-duplex mode). To determine which features a ... module ports (GBIC) and 12 oversubscribed ports (possible blocking). 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 5-3 With Gigabit Ethernet ports, port negotiation is full...where the speed is 1000 and duplex mode is used to the local Gigabit EtherChannel module port. 2. With this time. Table 5-3 Gigabit Ethernet Port Negotiation ...
... exchange flow-control parameters, remote fault information, and duplex information (even though Cisco Gigabit Ethernet ports only support full-duplex mode). To determine which features a ... module ports (GBIC) and 12 oversubscribed ports (possible blocking). 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 5-3 With Gigabit Ethernet ports, port negotiation is full...where the speed is 1000 and duplex mode is used to the local Gigabit EtherChannel module port. 2. With this time. Table 5-3 Gigabit Ethernet Port Negotiation ...
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... for each direction. • The network backbone connection is through a two-port Gigabit EtherChannel trunk link providing 2-Gbps bandwidth. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 5-5 The switch can bundle multiple oversubscribed ports into a Gigabit EtherChannel link to connect to the Gigabit Ethernet network backbone. and trunk-capable NICs...
... for each direction. • The network backbone connection is through a two-port Gigabit EtherChannel trunk link providing 2-Gbps bandwidth. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 5-5 The switch can bundle multiple oversubscribed ports into a Gigabit EtherChannel link to connect to the Gigabit Ethernet network backbone. and trunk-capable NICs...
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... (Rx) and desired for transmit (Tx) Port negotiation Enabled Spanning Tree Protocol Enabled for VLAN 1 Native VLAN VLAN 1 Spanning tree port cost 4 Gigabit EtherChannel Disabled on all Gigabit Ethernet ports (auto mode) Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 5-6 78-15486-01 Default Gigabit Ethernet Configuration Chapter 5 Configuring Gigabit Ethernet...
... (Rx) and desired for transmit (Tx) Port negotiation Enabled Spanning Tree Protocol Enabled for VLAN 1 Native VLAN VLAN 1 Spanning tree port cost 4 Gigabit EtherChannel Disabled on all Gigabit Ethernet ports (auto mode) Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 5-6 78-15486-01 Default Gigabit Ethernet Configuration Chapter 5 Configuring Gigabit Ethernet...
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... Step 2 Task Assign a name to determine the order in which the ports get access. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 5-7 Console> (enable) show port [mod_num[/port_num]] This example shows how to... the ports on the Catalyst enterprise LAN switches. When two ports simultaneously request access to the switching bus, the switch uses the priority level to a port. Note For information on configuring Gigabit EtherChannel, see Chapter 6, "Configuring Fast EtherChannel and Gigabit EtherChannel." Command set .
... Step 2 Task Assign a name to determine the order in which the ports get access. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 5-7 Console> (enable) show port [mod_num[/port_num]] This example shows how to... the ports on the Catalyst enterprise LAN switches. When two ports simultaneously request access to the switching bus, the switch uses the priority level to a port. Note For information on configuring Gigabit EtherChannel, see Chapter 6, "Configuring Fast EtherChannel and Gigabit EtherChannel." Command set .
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... 6-2 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-1 Note For complete information on installing Catalyst 4500 series Fast Ethernet and Gigabit Ethernet modules, refer to configure Fast EtherChannel and Gigabit EtherChannel port bundles on switching modules and fixed-configuration switches, as well as to the Catalyst 4500 Series, Catalyst 2948G, and Catalyst 2980G Switches Command Reference.
... 6-2 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-1 Note For complete information on installing Catalyst 4500 series Fast Ethernet and Gigabit Ethernet modules, refer to configure Fast EtherChannel and Gigabit EtherChannel port bundles on switching modules and fixed-configuration switches, as well as to the Catalyst 4500 Series, Catalyst 2948G, and Catalyst 2980G Switches Command Reference.
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...links in IEEE 802.3ad, allows Cisco switches to manage Ethernet channeling with adjoining switches. A trap is not configurable. For more information, see the "Understanding the PAgP" section on the Catalyst 4500 series switches, you can configure an EtherChannel using ports from multiple modules. The... frame distribution method is sent when a failure identifies the switch, the EtherChannel, and the failed link. All ports in the ...
...links in IEEE 802.3ad, allows Cisco switches to manage Ethernet channeling with adjoining switches. A trap is not configurable. For more information, see the "Understanding the PAgP" section on the Catalyst 4500 series switches, you can configure an EtherChannel using ports from multiple modules. The... frame distribution method is sent when a failure identifies the switch, the EtherChannel, and the failed link. All ports in the ...
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... (and a syslog message is physically connected but this condition occurs. If you have to full duplex. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-3 If a port is in the EtherChannel. • You cannot assign a port to see if the link is suppressed. Normal LACP behavior is reenabled automatically...
... (and a syslog message is physically connected but this condition occurs. If you have to full duplex. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-3 If a port is in the EtherChannel. • You cannot assign a port to see if the link is suppressed. Normal LACP behavior is reenabled automatically...
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...8226; Do not configure the ports in an EtherChannel is enabled. Configuring ports in an EtherChannel in different trunk modes can adversely affect switch performance. • Ports with the set differently on the ports. • Cisco Discovery Protocol (CDP) runs on the physical port..., or configure them as trunk ports. • If you configure the EtherChannel as a trunk, configure the same trunk mode on all the ports in a trunking EtherChannel. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-4 78-15486-01 Doing so can have ...
...8226; Do not configure the ports in an EtherChannel is enabled. Configuring ports in an EtherChannel in different trunk modes can adversely affect switch performance. • Ports with the set differently on the ports. • Cisco Discovery Protocol (CDP) runs on the physical port..., or configure them as trunk ports. • If you configure the EtherChannel as a trunk, configure the same trunk mode on all the ports in a trunking EtherChannel. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-4 78-15486-01 Doing so can have ...
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... tree as port speed, trunking state, native VLAN, and so on page 6-16. PAgP packets are configuring EtherChannel using LACP, see the "Understanding the LACP" section on . 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-5 Both the auto and desirable modes allow ports to negotiate with another port...
... tree as port speed, trunking state, native VLAN, and so on page 6-16. PAgP packets are configuring EtherChannel using LACP, see the "Understanding the LACP" section on . 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-5 Both the auto and desirable modes allow ports to negotiate with another port...
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...EtherChannel. EtherChannel administrative group numbers are not saved in NVRAM. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-6 78-15486-01 Use the show channel group command to which the EtherChannel belongs. EtherChannel IDs are stored in NVRAM and remain the same after the switch... administrative group number automatically. The ID can change if the EtherChannel is torn down and renegotiated, or if the switch is automatically assigned a unique EtherChannel ID. Only ports belonging to the administrative group number, each...
...EtherChannel. EtherChannel administrative group numbers are not saved in NVRAM. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-6 78-15486-01 Use the show channel group command to which the EtherChannel belongs. EtherChannel IDs are stored in NVRAM and remain the same after the switch... administrative group number automatically. The ID can change if the EtherChannel is torn down and renegotiated, or if the switch is automatically assigned a unique EtherChannel ID. Only ports belonging to the administrative group number, each...
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... [admin_group] mode {on Port(s) 3/5-6 are allowed to forwarding mode). 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-7 Create an EtherChannel with the auto and desirable modes. Port(s) 3/5-6 channel mode set port channel 3/5-6 on...) 3/6 WS-C4000 Console> (enable) Defining an EtherChannel Administrative Group You can configure as an EtherChannel, verify the EtherChannel capabilities for the module or switch you create an EtherChannel, an administrative group number is assigned automatically if one...
... [admin_group] mode {on Port(s) 3/5-6 are allowed to forwarding mode). 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-7 Create an EtherChannel with the auto and desirable modes. Port(s) 3/5-6 channel mode set port channel 3/5-6 on...) 3/6 WS-C4000 Console> (enable) Defining an EtherChannel Administrative Group You can configure as an EtherChannel, verify the EtherChannel capabilities for the module or switch you create an EtherChannel, an administrative group number is assigned automatically if one...
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... group 20 1/1 20 1/2 066510644(cat26-lnf(NET25)) 2/1 WS-C6009 Console> (enable) Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-8 78-15486-01 Command set port channel 3/5-6 50 Port(s) 3/5-6 are assigned to set the spanning tree port cost for an EtherChannel, perform this task in privileged mode: Step 1 Step 2 Task Define the...
... group 20 1/1 20 1/2 066510644(cat26-lnf(NET25)) 2/1 WS-C6009 Console> (enable) Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-8 78-15486-01 Command set port channel 3/5-6 50 Port(s) 3/5-6 are assigned to set the spanning tree port cost for an EtherChannel, perform this task in privileged mode: Step 1 Step 2 Task Define the...
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... 20 1/1 notconnect on 768 20 1/2 connected on both sides of the EtherChannel for channel ID 768: Console> (enable) show port channel [mod_num[/port_num]] 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-9 Chapter 6 Configuring Fast EtherChannel and Gigabit EtherChannel Configuring EtherChannel Using PAgP Console> (enable) set channel cost 768 12 Port(s) 1/1,1/2 port...
... 20 1/1 notconnect on 768 20 1/2 connected on both sides of the EtherChannel for channel ID 768: Console> (enable) show port channel [mod_num[/port_num]] 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-9 Chapter 6 Configuring Fast EtherChannel and Gigabit EtherChannel Configuring EtherChannel Using PAgP Console> (enable) set channel cost 768 12 Port(s) 1/1,1/2 port...
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...-type Trunk-vlans 3/5 not-trunking negotiate 1-1005 3/6 not-trunking negotiate 1-1005 Port Portvlancost-vlans 3/5 3/6 6-10 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Configuring EtherChannel Using PAgP Chapter 6 Configuring Fast EtherChannel and Gigabit EtherChannel This example shows how to return a channel to its default configuration and how to verify the...
...-type Trunk-vlans 3/5 not-trunking negotiate 1-1005 3/6 not-trunking negotiate 1-1005 Port Portvlancost-vlans 3/5 3/6 6-10 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Configuring EtherChannel Using PAgP Chapter 6 Configuring Fast EtherChannel and Gigabit EtherChannel This example shows how to return a channel to its default configuration and how to verify the...