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Interface Addition to a PortChannel
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 .
To force the addition of a port to a PortChannel, follow these steps:
Command
Step 1
switch# config t
Step 2
switch(config)# interface fc1/1
switch(config-if)#
Step 3
switch(config-if)# channel-group 1 force
fc1/1 added to port-channel 1 and disabled
please do the same operation on the switch at
the other end of the port-channel, then do
"no shutdown" at both ends to bring them up
switch(config-if)#
Compatibility Check
A compatibility check ensures that the same parameter settings are used in all physical ports in the
channel. Otherwise, they cannot become part of a PortChannel. The compatibility check is performed
before a port is added to the PortChannel.
The check ensures that the following parameters and setting match at both ends of a PortChannel:
•
•
•
A port addition procedure fails if the capability and administrative parameters in the remote switch are
incompatible with the capability and administrative parameters in the local switch. If the compatibility
check is successful, the interfaces are operational and the corresponding compatibility parameter
settings apply to these interfaces.
Suspended and Isolated States
If the operational parameters are incompatible, the compatibility check fails and the interface is placed
in a suspended or isolated state based on the configured mode:
•
•
See the
Cisco MDS 9000 Family Configuration Guide
13-10
Capability parameters (type of interface, Gigabit Ethernet at both ends or Fibre Channel at both
ends).
Administrative compatibility parameters (speed, mode, port VSAN, allowed VSAN, and port
security).
Operational parameters (speed and remote switch's WWN).
An interface enters the suspended state if the interface is configured in the ON mode.
An interface enters the isolated state if the interface is configured in the ACTIVE mode.
"Reason Codes" section on page
Purpose
Enters configuration mode.
Specifies the interface fc1/1.
Forces the addition of the physical port for
interface fc1/1 to channel group 1. The E port is
shut down.
11-7.
OL-6973-03, Cisco MDS SAN-OS Release 2.x
Chapter 13
Configuring PortChannels
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