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
About Interface Addition to a PortChannel
You can add a physical interface (or a range of interfaces) to an existing PortChannel. The compatible
parameters on the configuration are mapped to the PortChannel. Adding an interface to a PortChannel
increases the channel size and bandwidth of the PortChannel.
After the members are 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
"32-Port Switching Module Configuration Guidelines" section on page 16-2
section on page
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 settings 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:
Adding an Interface to a PortChannel
To add an interface to a PortChannel, follow these steps
switch# config t
OL-16184-01, Cisco MDS SAN-OS Release 3.x
Capability parameters (type of interface, Gigabit Ethernet at both ends, or Fibre Channel at both
Administrative compatibility parameters (speed, mode, port VSAN, allowed VSAN, and port
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
Enters configuration mode.
Cisco MDS 9000 Family CLI Configuration Guide
Interfaces in a PortChannel