S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
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Cisco MDS 9000 Family CLI Configuration Guide
OL-16184-01, Cisco MDS SAN-OS Release 3.x
Chapter 16 Configuring PortChannels
PortChannel Configuration Verification
About Manually Configured Channel Groups
A user-configured channel group cannot be converted to an autocreated channel group. However, you
can convert an autocreated channel group to a manual channel group. Once performed, this task is
irreversible— the channel group number does not change, but the member ports operate according to the
properties of the manually configured channel group, and the autocreation of channel group is implicitly
disabled for all member ports.
Tip
If you enable persistence, be sure to enable it at both ends of the PortChannel.
Converting to Manually Configured Channel Groups
You can convert autocreated channel group to a user-configured channel group using the
port-channel
channel-group-number
persistent
EXEC
command. If the PortChannel does not exist, this command is
not executed.
PortChannel Configuration Verification
You can view specific information about existing PortChannels at any time from EXEC mode. The
following
show
commands provide further details on existing PortChannels. You can force all screen
output to go to a printer or save it to a file. See Examples
16-1
to
16-6
.
The
show port-channel summary
command displays a summary of PortChannels within the switch. A
one-line summary of each PortChannel provides the administrative state, the operational state, the
number of attached and active interfaces (up), and the first operational port (FOP), which is the primary
operational interface selected in the PortChannel to carry control-plane traffic (no load-balancing). The
FOP is the first port that comes up in a PortChannel and can change if the port goes down. The FOP is
also identified by an asterisk ( * ).
Example 16-1 Displays the PortChannel Summary
switch#
show port-channel summary
------------------------------------------------------------------------------
Interface Total Ports Oper Ports First Oper Port
------------------------------------------------------------------------------
port-channel 77 2 0 --
port-channel 78 2 0 --
port-channel 79 2 2 fcip200
Example 16-2 Displays the PortChannel Configured in the Default ON Mode
switch#
show port-channel database
port-channel 77
Administrative channel mode is
on
Operational channel mode is
on
Last membership update succeeded
2 ports in total, 0 ports up
Ports: fcip1 [down]
fcip2 [down]
port-channel 78
Administrative channel mode is
on
Operational channel mode is
on
