Changing The Channel Mode - Cisco WS-C2948G-GE-TX Configuration Manual

Configuring EtherChannel Using LACP
You can specify an administrative key value to a set of ports. If you do not specify an administrative key
value, the system automatically selects a value. In both cases, the value can range from 1–1024.
If you choose a value for the administrative key, and this value has already been used in the system, then
the system moves all the ports that were originally associated with the previously assigned
administrative key value to another automatically assigned value, and it assigns the modules and ports
that you specified in the command to the administrative key value that you specified.
You can assign a maximum of eight ports to an administrative key.
The default mode for all ports being assigned the administrative key is passive; however, if the channel
was previously assigned a particular mode (see the
assigning the administrative key will not affect it—the channel mode that you specified previously is
maintained.
To specify the administrative key value, perform this task in privileged mode:
Task
Specify the administrative key value.
This example assigns ports 4/1 to 4/4 the same administrative key, allowing the system to pick its value:
Console> (enable) set port lacp-channel 4/1-4
Port(s) 4/1-4 are assigned to admin key 96.
Console> (enable)
This example shows how to assign ports 4/4 to 4/6 the administrative key 96 (you specify the 96). In this
example, the administrative key was previously assigned to another group of ports by the system (see the
previous example), so those ports will be moved to another administrative key:
Console> (enable) set port lacp-channel 4/4-6 96
Port(s) 4/1-3 are moved to admin key 97.
Port(s) 4/4-6 are assigned to admin key 96.
Console> (enable)
This example shows the system response when more than eight ports are assigned the same
administrative key value:
Console> (enable) set port lacp-port channel 2/1-2,4/1-8 123
No more than 8 ports can be assigned to an admin key.
Console> (enable)
Use the show lacp-channel group command to display administrative key values for ports.

Changing the Channel Mode

You can change the channel mode for a set of ports that were previously assigned the same administrative
key (see the
To change the channel mode, perform this task in privileged mode:
Task
Change the channel mode.
Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide—Release 8.2GLX
6-20
"Specifying an Administrative Key Value" section on page
Command
set port lacp-channel mod/ports mode [on | off | active | passive]
Chapter 6 Configuring Fast EtherChannel and Gigabit EtherChannel
"Changing the Channel Mode" section on page
Command
set port lacp-channel mod/ports [admin_key]
6-20),
6-19).
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