Cisco WS-C4003 Software Guide - Page 83
Configuring EtherChannel, Creating an EtherChannel
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Chapter 6 Configuring Fast EtherChannel and Gigabit EtherChannel Configuring EtherChannel • If you disable a port in a channel, the system considers the port as a link failure and the port's traffic is transferred to one or more of the remaining ports in the channel. • Ensure that all ports in a channel have the same configuration on both ends of the channel. Configuring EtherChannel These sections describe how to configure an EtherChannel bundle: • Creating an EtherChannel, page 6-5 • Defining an EtherChannel Administrative Group, page 6-6 • Setting the EtherChannel Spanning Tree Port Cost, page 6-7 • Setting the EtherChannel Spanning Tree Port VLAN Cost, page 6-7 • Removing an EtherChannel Bundle, page 6-8 • Displaying EtherChannel Configuration Information, page 6-9 • Displaying EtherChannel Traffic Statistics, page 6-10 • Displaying EtherChannel PAgP Statistics, page 6-11 Creating an EtherChannel You create an EtherChannel port bundle by specifying the ports in the channel and the channeling mode. When you create an EtherChannel, an administrative group number is assigned automatically if one is not already assigned to the specified ports. In addition, a channel ID is assigned. The silent and non-silent keywords function only with the auto and desirable modes. To create an EtherChannel port bundle, perform this task in privileged mode: Step 1 Step 2 Step 3 Task Command If you are unsure which ports you can configure as an EtherChannel, verify the EtherChannel capabilities for the module or switch you are configuring. show port capabilities [mod_num[/port_num]] Create an EtherChannel with the desired ports. set port channel port_list [admin_group] mode {on | off | desirable | auto} [silent | non-silent] Verify the EtherChannel configuration. show port channel [port_list] This example shows how to create an EtherChannel bundle and verify the configuration: Console> (enable) set port channel 3/5-6 on Port(s) 3/5-6 are assigned to admin group 57. Port(s) 3/5-6 channel mode set to on. Console> (enable) show port channel Port Status Channel Admin Ch Mode Group Id 3/5 connected on 57 835 3/6 connected on 57 835 78-12647-02 Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 6-5