37-14
Catalyst 2960 and 2960-S Switch Software Configuration Guide
OL-8603-09
Chapter 37 Configuring EtherChannels and Link-State Tracking
Configuring EtherChannels
To remove a port from the EtherChannel group, use the no channel-group interface configuration
command.
Step 4 channel-group
channel-group-number mode {auto
[non-silent] | desirable [non-silent] |
on} | {active | passive}
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 and the “LACP Modes” section on
page 37-7.
Step 5 end Return to privileged EXEC mode.
Step 6 show running-config Verify your entries.
Step 7 copy running-config
startup-config
(Optional) Save your entries in the configuration file.
Command Purpose