Cisco Nexus 5000 Series Switch Fabric Manager Software Configuration Guide, NX-OS 4.0 (OL-16598-01, June 2008)

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14-14
Nexus 5000 Series Switch Fabric Manager Software Configuration Guide
OL-16598-01
Chapter 14 Configuring SAN Port Channels
Interfaces in a SAN Port Channel
Forcing an Interface Addition
You can force the port configuration to be overwritten by the SAN port channel. In this case, the interface
is added to a SAN port channel.
• If you use the default On mode to avoid inconsistent states across switches and to maintain
consistency across switches, then the ports shut down. You must explicitly enable those ports again.
• If you use the Active mode, then the port channel ports automatically recover from the addition.
Note When SAN port channels are created from within an interface, the force option cannot be used.
After the members are forcefully added, regardless of the mode (Active and On) used, the ports at either
end are gracefully brought down, indicating that no frames are lost when the interface is going down (see
the “Setting the Interface Administrative State” section on page 10-9).
To force the addition of a port to a SAN port channel using Fabric Manager, perform this task:
Step 1 Expand ISLs, and then choose Port Channels in the Physical Attributes pane.
You see the port channels configured in the Information pane.
Step 2 Click the Channels tab and find the switch and SAN port channel that you want to edit.
Step 3 Set Members Admin to the interface or list of interfaces that you want to add to the SAN port channel.
Step 4 Check the Force check box to force this interface addition.
Step 5 Click the Apply Changes icon to save any modifications.
About Interface Deletion from a SAN Port Channel
When a physical interface is deleted from the SAN port channel, the channel membership is
automatically updated. If the deleted interface is the last operational interface, then the port channel
status is changed to a down state. Deleting an interface from a SAN port channel decreases the channel
size and bandwidth of the SAN port channel.
• If you use the default On mode to avoid inconsistent states across switches and to maintain
consistency across switches, then the ports shut down. You must explicitly enable those ports again.
• If you use the Active mode, then the port channel ports automatically recover from the deletion.
After the members are deleted, regardless of the mode (Active and On) used, the ports at either end are
gracefully brought down, indicating that no frames are lost when the interface is going down.
Deleting an Interface from a SAN Port Channel
To delete a physical interface (or a range of physical interfaces) from a SAN port channel using Fabric
Manager, perform this task:
Step 1 Expand ISLs, and then choose Port Channels in the Physical Attributes pane.
You see the SAN port channels configured in the Information pane.