About Interface Deletion From A Portchannel; Deleting An Interface From A Portchannel; Portchannel Protocol - HP Cisco MDS 9020 - Fabric Switch Configuration Manual

Chapter 16 Configuring PortChannels
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
switch(config)#
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)#

About Interface Deletion from a PortChannel

When a physical interface is deleted from the PortChannel, the channel membership is automatically
updated. If the deleted interface is the last operational interface, then the PortChannel status is changed
to a down state. Deleting an interface from a PortChannel decreases the channel size and bandwidth of
the PortChannel.
•
•
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 (see the
"32-Port Switching Module Configuration Guidelines" section on page 16-2
section on page

Deleting an Interface from a PortChannel

To delete a physical interface (or a range of physical interfaces) from a PortChannel, follow these steps:
Command
Step 1
switch(config)# interface fc1/1
switch(config-if)#
switch(config)# interface fc1/1 - 5
switch(config-if)#
Step 2
switch(config-if)# no channel-group 2
fc1/1 fc1/2 fc1/3 fc1/4 fc1/5 removed
from port-channel 2 and disabled. Please
do the same operation on the switch at
the other end of the port-channel
switch(config-if)#

PortChannel Protocol

In earlier Cisco SAN-OS releases, PortChannels required additional administrative tasks to support
synchronization. The Cisco SAN-OS software provides robust error detection and synchronization
capabilities. You can manually configure channel groups or they can be automatically created. In both
OL-16184-01, Cisco MDS SAN-OS Release 3.x
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 PortChannel ports automatically recover from the deletion.
12-12).
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.
Purpose
Enters the selected physical interface level.
Enters the selected range of physical interfaces.
Deletes the physical Fibre Channel interfaces in
channel group 2.
Cisco MDS 9000 Family CLI Configuration Guide
PortChannel Protocol
and "Graceful Shutdown"
16-13