Forcing An Interface Addition; About Interface Deletion From A San Port Channel - Cisco AJ732A - MDS 9134 Fabric Switch Configuration Manual

Interfaces in a SAN Port Channel
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
The following example adds an interface to a SAN port channel:
switch(config)# interface fc2/3
switch(config-if)# channel-group 15
fc2/3 added to san-port-channel 15 and disabled
please do the same operation on the switch at the other end of the san-port-channel, then
do "no shutdown" at both ends to bring them up

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.
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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
To force the addition of a port to a SAN port channel, perform this task:
Command
Step 1
switch# configuration terminal
switch(config)#
Step 2
switch(config)# interface type slot/port
switch(config-if)#
Step 3
switch(config-if)# channel-group
channel-number force
The following example adds an interface to a SAN port channel:
switch(config)# interface fc2/3
switch(config-if)# channel-group 15 force
fc2/3 added to san-port-channel 15 and disabled
please do the same operation on the switch at the other end of the san-port-channel, then
do "no shutdown" at both ends to bring them up

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.
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Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
36-10
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.
"Setting the Interface Administrative State" section on page
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.
Chapter 36 Configuring SAN Port Channels
32-9).
Purpose
Enters configuration mode.
Enters configuration mode for the specified
interface.
Forces the addition of the interface into the
specified channel group. The E port is shut
down.
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