Autocreation Functionality - Cisco DS-X9530-SF1-K9 - Supervisor-1 Module - Control Processor Configuration Manual

Chapter 13 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 .
Table 13-2
User Configured Channel Group
Manually configured by the user.
Member ports can not participate in autocreation
of channel groups. The autocreation feature
cannot be configured.
You can form the PortChannel with a subset of the
ports in the channel group. Incompatible ports
remain in a suspended or isolated state depending
on the ON or ACTIVE mode configuration.
Any administrative configuration made to the
PortChannel is applied to all ports in the channel
group, and you can save the configuration for the
PortChannel interface.
You can remove any channel group and add
members to a channel group.

Autocreation Functionality

The autocreation protocol has the following functionality:
•
•
•
•
•
•
•
•
OL-6973-03, Cisco MDS SAN-OS Release 2.x
Channel Group Configuration Differences
A port is not allowed to be configured as part of a PortChannel when the autocreation feature is
enabled. These two configurations are mutually exclusive.
Autocreation must be enabled in both the local and peer ports to negotiate a PortChannel.
Aggregation occurs in one of two ways:
A port is aggregated into a compatible autocreated PortChannel, or
–
A port is aggregated with another compatible port to form a new PortChannel
–
Newly created PortChannels are allocated from the maximum possible PortChannel (128) in a
decreasing order based on availability. If all 128 numbers are used up, aggregation is not allowed.
You cannot change the membership or delete an autocreated PortChannel
When you disable autocreation, all member ports are removed from the autocreated PortChannel.
Once the last member is removed from an autocreated PortChannel, the channel is automatically
deleted and the number is released for reuse.
An autocreated PortChannel is not persistent through a reboot. An autocreated PortChannel can be
manually configured to appear the same as a persistent PortChannel. Once the PortChannel is made
persistent, the autocreation feature is disabled in all member ports.
Autocreated Channel Group
Created automatically when compatible links come
up between two compatible switches, if channel
group autocreation is enabled in all ports at both
ends.
None of these ports are members of a user
configured channel group.
All ports included in the channel group participate
in the PortChannel—no member port becomes
isolated or suspended; instead, the member port is
removed from the channel group when the link is
found to be incompatible.
Any administrative configuration made to the
PortChannel is applied to all ports in the channel
group, but the configurations are saved for the
member ports; no configuration is saved for the
PortChannel interface. You can explicitly convert
this channel group, if required.
You cannot remove a channel group, or add/remove
any of its members. The channel group is removed
when no member ports exist.
Cisco MDS 9000 Family Configuration Guide
PortChannel Protocol
13-15