Enabling And Configuring Autocreation - Cisco DS-X9530-SF1-K9 - Supervisor-1 Module - Control Processor Configuration Manual

PortChannel Protocol
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 .

Enabling and Configuring Autocreation

You can enable or disable the autocreation feature on a per-port basis or for all ports in the switch. When
this configuration is enabled, the channel group mode is assumed to be active. The default for this task
is disabled.
If autocreation of channel groups is enabled for an interface, you must first disable autocreation before
downgrading to earlier software versions or before configuring the interface in a manually configured
channel group.
When enabling autocreation in any switch in the Cisco MDS 9000 Family, we recommend that you retain
Tip
at least one interconnected port between the switches without any autocreation configuration. If all ports
between two switches are configured with the autocreation feature at the same time, you may face a
possible traffic disruption between these two switches as the ports are automatically disabled and
reenabled when ports are added to a autocreated PortChannel.
To configure automatic channel groups, follow these steps:
Command
Step 1
switch# config t
Step 2
switch(config)# interface fc8/13
switch(config- if)#
Step 3
switch(config- if)# channel-group auto
switch(config- if)# no channel-group auto
Converting to 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.
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.
Cisco MDS 9000 Family Configuration Guide
13-16
Chapter 13
Purpose
Enters configuration mode.
Enters the configuration mode for the selected
interface(s).
Automatically creates the channel group for the
selected interface(s).
Disables the autocreation of channel groups for this
interface, even if the system default configuration
may have autocreation enabled.
OL-6973-03, Cisco MDS SAN-OS Release 2.x
Configuring PortChannels