Cisco Catalyst 2975 Software Configuration Manual page 846

Configuring EtherChannels
Command
Step 4
channel-group
channel-group-number mode {auto
[non-silent] | desirable [non-silent] |
on} | {active | passive}
Step 5 end
Step 6 show running-config
Step 7
copy running-config
startup-config
To remove a port from the EtherChannel group, use the no channel-group interface configuration
command.
Catalyst 2975 Switch Software Configuration Guide
37-14
Chapter 37
Purpose
Assign the port to a channel group, and specify the PAgP or the LACP mode.
For channel-group-number, the range is 1 to 6.
For mode, select one of these keywords:
auto—Enables PAgP only if a PAgP device is detected. It places the port
•
into a passive negotiating state, in which the port responds to PAgP
packets it receives but does not start PAgP packet negotiation.
The auto keyword is not supported when EtherChannel members are from
different switches in the switch stack.
desirable—Unconditionally enables PAgP. It places the port into an
•
active negotiating state, in which the port starts negotiations with other
ports by sending PAgP packets.
The desirable keyword is not supported when EtherChannel members are
from different switches in the switch stack.
on—Forces the port to channel without PAgP or LACP. In the on mode,
•
an EtherChannel exists only when a port group in the on mode is connected
to another port group in the on mode.
• non-silent—(Optional) If your switch is connected to a partner that is
PAgP-capable, configure the switch port for nonsilent operation when the
port is in the auto or desirable mode. If you do not specify non-silent,
silent is assumed. The silent setting is for connections to file servers or
packet analyzers. This setting allows PAgP to operate, to attach the port to
a channel group, and to use the port for transmission.
active—Enables LACP only if a LACP device is detected. It places the
•
port into an active negotiating state in which the port starts negotiations
with other ports by sending LACP packets.
• passive—Enables LACP on the port and places it into a passive
negotiating state in which the port responds to LACP packets that it
receives, but does not start LACP packet negotiation.
For information on compatible modes for the switch and its partner, see the
"PAgP Modes" section on page 37-6
page 37-7.
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
Configuring EtherChannels and Link-State Tracking
and the "LACP Modes" section on
OL-19720-02