About Manually Configured Channel Groups; Converting To Manually Configured Channel Groups; Portchannel Configuration Verification - HP Cisco MDS 9020 - Fabric Switch Configuration Manual

Chapter 16 Configuring PortChannels
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

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.
If you enable persistence, be sure to enable it at both ends of the PortChannel.
Tip

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
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
------------------------------------------------------------------------------
port-channel 77
port-channel 78
port-channel 79
Example 16-2 Displays the PortChannel Configured in the Default ON Mode
switch# show port-channel database
port-channel 77
port-channel 78
OL-16184-01, Cisco MDS SAN-OS Release 3.x
Total Ports
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]
Administrative channel mode is on
Operational channel mode is on
16-1
Oper Ports
2 0
2 0
2 2
Cisco MDS 9000 Family CLI Configuration Guide
PortChannel Configuration Verification
to 16-6.
First Oper Port
--
--
fcip200
16-17