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
10-4
Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x
OL-9285-05
Chapter 10 Troubleshooting PortChannels and Trunking
Trunking Issues
Newly Added Interface Does Not Come Online In a PortChannel
Symptom
Newly added interface does not come online in a PortChannel.
Configuring Port Channel Modes Using Fabric Manager
To configure active mode using Fabric Manager, follow these steps:
Step 1
Expand
ISLs
and then select
Port Channels
in the Physical Attributes pane.
You see the PortChannels configured in the Information pane.
Step 2
Click the
Protocols
tab and, from the Mode drop-down menu, select the appropriate mode for the Port
Channel.
Step 3
Click
Apply Changes
icon to save any modifications or click
Undo Changes
to discard any changes.
Trunking Issues
This section describes common trunking issues and includes the following topics:
•
Cannot Configure Trunking, page 10-5
•
VSAN Traffic Does Not Traverse Trunk, page 10-5
Table 10-2
Newly Added Interface Does Not Come Online in a PortChannel
Symptom
Possible Cause
Solution
Newly added
interface does not
come online in a
PortChannel.
PortChannel mode is on.
Enable PortChannel manually or change PortChannel
mode to active. See the
“Configuring Port Channel Modes
Using Fabric Manager” section on page 10-4
.
Or, use the
no shutdown
CLI command to enable the
PortChannel manually or use the
channel-mode active
CLI command in the interface submode for the
PortChannel interface.
Interface parameters are not compatible
with existing PortChannel.
Use the force option to force the physical interface to take
on the parameters of the PortChannel. In Fabric Manager,
choose
ISLs > Port Channels
, check the
Force
check box,
and click
Apply Changes
.
Or, use the
channel-group
<x>
force
CLI command in the
interface submode for the physical interface.
