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11-4
Cisco Nexus 1000V Troubleshooting Guide, Release 5.2(1)SV3(1.1)
OL-31593-01
Chapter 11 Port Channels and Trunking
Cannot Create Port Channel
Cannot Create Port Channel
Newly Added Interface Does Not Come Online In a Port Channel
Forcing Port Channel Characteristics onto an Interface
You can force the physical interface to take on the characteristics of the port channel. Use this procedure
only if you want to configure the port channel manually and not through the port profile.
BEFORE YOUR BEGIN
•
Log in to the CLI in configuration mode.
• Make sure that the forced interface has same speed, duplex, and flow control settings as the channel
group.
DETAILED STEPS
Step 1
Enter the interface configuration mode.
interface ethernet slot/port
You are placed into interface configuration mode.
Symptom Possible Cause Solution
Cannot create a port
channel. The maximum number of port channels
has been reached for the system. Enter the show port-channel summary command to
verify the number of port channels already configured. You
can have a maximum of 256 port channels on the Cisco
Nexus 1000V.
Symptom Possible Cause Solution
Newly added
interface does not
come online in a port
channel. The port channel mode is on. 1. Make sure that you have the port channel configuration
in the port profile (port group) used by that interface.
2.
Check if a port channel is already present on the
module that is using the same port profile. If there is,
check the running configuration on the port channel
and the newly added interface. The interface does not
come up if the port channel configurations are
different.
3.
If the port channel configuration is different, apply the
difference on the newly added interface. Remove the
port, and then add it back.
Interface parameters are not compatible
with those of the existing port. See the “Forcing Port Channel Characteristics onto an
Interface” section on page 11-4 , to force the physical
interface to take on the parameters of the port channel. Use
this procedure only if you want to configure the port
channel manually and not through the port profile.