About Channel Group Creation - Cisco nexus 5000 series Cli Configuration Manual

Chapter 1 Configuring SAN Port Channels
S e n d f e e d b a c k t o n x 5 0 0 0 - d o c f e e d b a c k @ c i s c o . c o m
This section describes how to configure the port channel protocol and includes the following sections:
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About Channel Group Creation

If channel group autocreation is enabled, ISLs can be configured automatically into channel groups
without manual intervention.
The first ISL comes up as an individual link. In the example shown in
When the next link comes up (A2-B2 in the example), the port channel protocol determines if this link
is compatible with link A1-B1 and automatically creates channel groups 10 and 20 in the respective
switches. Link A3-B3 can join the channel groups (and the port channels) if the respective ports have
compatible configurations. Link A4-B4 operates as an individual link, because it is not compatible with
the existing member ports in the channel group.
Figure 1-7
Channel Group 10
Switch A
The channel group numbers are assigned dynamically (when the channel group is formed).
The channel group number may change across reboots for the same set of port channels depending on
the initialization order of the ports.
OL-16597-01
About Channel Group Creation, page 1-13
Autocreation Guidelines, page 1-14
Enabling and Configuring Autocreation, page 1-15
About Manually Configured Channel Groups, page 1-15
Converting to Manually Configured Channel Groups, page 1-16
Figure 1-7
Autocreating Channel Groups
Channel Group 20
po10 po20
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2
3
4
shows an example of channel group autocreation.
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2
Switch B
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Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
Port Channel Protocol
Figure 1-7, this is link A1-B1.
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