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...CISCO REPRESENTATIVE FOR A COPY. and 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... 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. USERS MUST TAKE FULL RESPONSIBILITY ...
...CISCO REPRESENTATIVE FOR A COPY. and 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... 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. USERS MUST TAKE FULL RESPONSIBILITY ...
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
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... explains how spanning tree works. Configuring Gigabit Ethernet Switching Describes how to perform a baseline configuration of the Catalyst enterprise LAN switches. Configuring Spanning Tree Describes how to use the different command-line interfaces (CLIs). Configuring Spanning Tree Describes how to configure Fast EtherChannel and and Gigabit EtherChannel Gigabit EtherChannel port bundles. Preface This preface describes who...
... explains how spanning tree works. Configuring Gigabit Ethernet Switching Describes how to perform a baseline configuration of the Catalyst enterprise LAN switches. Configuring Spanning Tree Describes how to use the different command-line interfaces (CLIs). Configuring Spanning Tree Describes how to configure Fast EtherChannel and and Gigabit EtherChannel Gigabit EtherChannel port bundles. Preface This preface describes who...
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... ports on configuring Fast EtherChannel, see Chapter 6, "Configuring Fast EtherChannel and Gigabit EtherChannel." To assign a name to a port, perform this task in privileged mode: Step 1 Step 2 Task Assign a name to facilitate switch administration. Command set port name mod_num/port_num [name_string] show port [mod_num[/port_num]] 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide...
... ports on configuring Fast EtherChannel, see Chapter 6, "Configuring Fast EtherChannel and Gigabit EtherChannel." To assign a name to a port, perform this task in privileged mode: Step 1 Step 2 Task Assign a name to facilitate switch administration. Command set port name mod_num/port_num [name_string] show port [mod_num[/port_num]] 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide...
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...Switching Understanding How Gigabit Ethernet Works Understanding How Port Negotiation Works Caution Unlike autonegotiation with 10/100 Fast Ethernet, Gigabit Ethernet port negotiation does not involve negotiating port speed. Note Port negotiation is full. Gigabit Ethernet port negotiation is used to the local Gigabit EtherChannel...information, and duplex information (even though Cisco Gigabit Ethernet ports only support full-...blocking). 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 5-3 The...
...Switching Understanding How Gigabit Ethernet Works Understanding How Port Negotiation Works Caution Unlike autonegotiation with 10/100 Fast Ethernet, Gigabit Ethernet port negotiation does not involve negotiating port speed. Note Port negotiation is full. Gigabit Ethernet port negotiation is used to the local Gigabit EtherChannel...information, and duplex information (even though Cisco Gigabit Ethernet ports only support full-...blocking). 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 5-3 The...
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... four or eight oversubscribed ports has a buffer for links to the switch 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 Two ports are in each connected port...example of traffic over channeled connections to the oversubscribed port group and can bundle multiple oversubscribed ports into a Gigabit EtherChannel link to connect to transmit traffic simultaneously. Each workstation can burst up to 1-Gbps bandwidth while averaging 250 ...
... four or eight oversubscribed ports has a buffer for links to the switch 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 Two ports are in each connected port...example of traffic over channeled connections to the oversubscribed port group and can bundle multiple oversubscribed ports into a Gigabit EtherChannel link to connect to transmit traffic simultaneously. Each workstation can burst up to 1-Gbps bandwidth while averaging 250 ...
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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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... 1 Step 2 Task Assign a name to configure Gigabit Ethernet switching ports on configuring Gigabit EtherChannel, see Chapter 6, "Configuring Fast EtherChannel and Gigabit EtherChannel." Chapter 5 Configuring Gigabit Ethernet Switching Configuring Gigabit Ethernet Ports Configuring Gigabit Ethernet Ports The following sections ... to a port, perform this task 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) set port name 2/2 Wiring Closet Port 2/2 name set...
... 1 Step 2 Task Assign a name to configure Gigabit Ethernet switching ports on configuring Gigabit EtherChannel, see Chapter 6, "Configuring Fast EtherChannel and Gigabit EtherChannel." Chapter 5 Configuring Gigabit Ethernet Switching Configuring Gigabit Ethernet Ports Configuring Gigabit Ethernet Ports The following sections ... to a port, perform this task 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) set port name 2/2 Wiring Closet Port 2/2 name set...
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... 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. CH A P T E R 6 Configuring Fast EtherChannel...
... 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. CH A P T E R 6 Configuring Fast EtherChannel...
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... channel as a trunk. A trap is not configurable. An EtherChannel bundle can consist of channels is 126 for EtherChannel EtherChannel support is a Cisco-proprietary protocol that conform to the 802.3ad specification. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-2 78-15486-01 All ports in an EtherChannel according to the source and destination MAC addresses...
... channel as a trunk. A trap is not configurable. An EtherChannel bundle can consist of channels is 126 for EtherChannel EtherChannel support is a Cisco-proprietary protocol that conform to the 802.3ad specification. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-2 78-15486-01 All ports in an EtherChannel according to the source and destination MAC addresses...
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... to the default channel mode for the new protocol. • Configure all ports in an EtherChannel, it is treated as a nonchannel port. The port is set back to full duplex. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-3 Normal LACP behavior is reenabled automatically when the link is...
... to the default channel mode for the new protocol. • Configure all ports in an EtherChannel, it is treated as a nonchannel port. The port is set back to full duplex. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-3 Normal LACP behavior is reenabled automatically when the link is...
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... and later releases, a PAgP-configured EtherChannel is enabled. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-4 78-15486-01 EtherChannel Interaction with other Features This section lists the guidelines and restrictions for EtherChannel's interaction with other mode may be used...configure the ports in an EtherChannel as an individual port. If the allowed range of service (QoS) configurations. • An EtherChannel will not form if protocol filtering is set differently on the ports. • Cisco Discovery Protocol (CDP) runs ...
... and later releases, a PAgP-configured EtherChannel is enabled. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-4 78-15486-01 EtherChannel Interaction with other Features This section lists the guidelines and restrictions for EtherChannel's interaction with other mode may be used...configure the ports in an EtherChannel as an individual port. If the allowed range of service (QoS) configurations. • An EtherChannel will not form if protocol filtering is set differently on the ports. • Cisco Discovery Protocol (CDP) runs ...
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...In addition, outbound broadcast and multicast packets that are four user-configurable channel modes: on any other port of Fast EtherChannel and Gigabit EtherChannel links by sending PAgP packets. There are transmitted on one port in the channel only, not out every port ...or multicast packet is in on off , auto, and desirable. PAgP packets are configured in on . 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-5 Prevents the port from returning on , off auto desirable Description Forces the port to determine ...
...In addition, outbound broadcast and multicast packets that are four user-configurable channel modes: on any other port of Fast EtherChannel and Gigabit EtherChannel links by sending PAgP packets. There are transmitted on one port in the channel only, not out every port ...or multicast packet is in on off , auto, and desirable. PAgP packets are configured in on . 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-5 Prevents the port from returning on , off auto desirable Description Forces the port to determine ...
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... a new automatically numbered administrative group consisting of eight ports. EtherChannel IDs are not saved in NVRAM and remain the same after the switch is reset or power cycled. Configuring EtherChannel Using PAgP These sections describe how to display the EtherChannel ID. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-6 78-15486-01 An administrative...
... a new automatically numbered administrative group consisting of eight ports. EtherChannel IDs are not saved in NVRAM and remain the same after the switch is reset or power cycled. Configuring EtherChannel Using PAgP These sections describe how to display the EtherChannel ID. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-6 78-15486-01 An administrative...
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... is not already assigned to forwarding mode). 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-7 Administrative group membership is assigned. To create an EtherChannel port bundle, perform this task in the channel and the channeling mode. Verify the EtherChannel configuration. In addition, a channel ID is limited by specifying the...
... is not already assigned to forwarding mode). 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-7 Administrative group membership is assigned. To create an EtherChannel port bundle, perform this task in the channel and the channeling mode. Verify the EtherChannel configuration. In addition, a channel ID is limited by specifying the...
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... 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 Console> (enable) show channel... group 50 Admin Port Status Channel Channel group Mode id 50 3/5 connected auto silent 0 50 3/6 connected auto silent 0 Admin Port Device-ID Port-ID Platform group 50 3/5 50 3/6 Console> (enable) Setting the EtherChannel...
... 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 Console> (enable) show channel... group 50 Admin Port Status Channel Channel group Mode id 50 3/5 connected auto silent 0 50 3/6 connected auto silent 0 Admin Port Device-ID Port-ID Platform group 50 3/5 50 3/6 Console> (enable) Setting the EtherChannel...
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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 to 12. Setting the spanning tree...
... 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 to 12. Setting the spanning tree...
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...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 ...Command show port channel [mod_num[/port_num]] info [spantree | trunk | protocol | gmrp | gvrp | qos] show channel group [admin_group] info [spantree | trunk | protocol | gmrp | gvrp | qos] show port channel No ports channelling Console> (enable) Displaying EtherChannel Configuration Information To display EtherChannel...
...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 ...Command show port channel [mod_num[/port_num]] info [spantree | trunk | protocol | gmrp | gvrp | qos] show channel group [admin_group] info [spantree | trunk | protocol | gmrp | gvrp | qos] show port channel No ports channelling Console> (enable) Displaying EtherChannel Configuration Information To display EtherChannel...