Channel-Group - Cisco Catalyst 2950 Command Reference Manual

Chapter 2 Cisco IOS Commands

channel-group

Use the channel-group interface configuration command to assign an Ethernet interface to an
EtherChannel group. Use the no form of this command to remove an Ethernet interface from an
EtherChannel group.
Syntax Description
channel-group-number
mode
auto
desirable
non-silent
on
Defaults No channel groups are assigned.
There is no default mode.
Command Modes
Interface configuration
Command History Release
12.1(6)EA2
Usage Guidelines
You must specify the mode when entering this command. If the mode is not entered, an Ethernet interface
is not assigned to an EtherChannel group, and an error message appears.
78-11381-05
channel-group channel-group-number mode {auto [non-silent] | desirable [non-silent] | on}
no channel-group
Specify the channel group number. The range is 1 to 6.
Specify the EtherChannel Port Aggregation Protocol (PAgP) mode of the
interface.
Enable PAgP only if a PAgP device is detected.
Auto mode places an interface into a passive negotiating state, in which the
interface responds to PAgP packets it receives but does not initiate PAgP
packet negotiation. A channel is formed only with another port group in
desirable mode. This setting is the default.
Unconditionally enable PAgP.
Desirable mode places an interface into an active negotiating state, in which
the interface initiates negotiations with other interfaces by sending PAgP
packets. A channel is formed with another port group in either the desirable
or auto mode.
(Optional) Used with the auto or desirable keyword when traffic is expected
from the other device.
Force the interface to channel without PAgP.
With the on mode, a usable EtherChannel exists only when an interface
group in the on mode is connected to another interface group in the on mode.
Modification
This command was first introduced. It replaced the port group command.
Catalyst 2950 Desktop Switch Command Reference
channel-group
2-9