Cisco WS-C4003 Software Guide - Page 84

Configuring EtherChannel Chapter 6 Configuring Fast EtherChannel and Gigabit EtherChannel Port Device-ID Port-ID Platform 3/5 069003103(5500) 3/5 WS-C4000 3/6 069003103(5500) 3/6 WS-C4000 Console> (enable) Defining an EtherChannel Administrative Group You can define an EtherChannel administrative group manually to identify groups of ports that are allowed to form an EtherChannel bundle together. When you create an EtherChannel port bundle, an administrative group is defined automatically. Administrative group membership is limited by hardware restrictions. The admin_group can be any value between 1 and 1024, inclusive. Caution Modifying the EtherChannel administrative group on connected ports causes the specified ports to be removed from and then added to spanning tree (that is, a spanning tree topology change occurs and the ports must enter listening and learning mode before returning to forwarding mode). To define an EtherChannel administrative group, perform this task in privileged mode: Step 1 Step 2 Task Command Define the administrative group by specifying the set port channel port_list admin_group ports in the group. Verify the administrative group configuration. show channel group [admin_group] This example shows how to assign ports to an administrative group and verify the configuration: Console> (enable) set port channel 3/5-6 50 Port(s) 3/5-6 are assigned to admin group 50. 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) Software Configuration Guide-Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4 6-6 78-12647-02