Solved: Port channel and trunking question

vincehgov · ‎07-13-2010

If I wanted the ports in my port channel to be trunking, do I have to specify "switchport mode trunk" on each port or can I just specify it on the port-channel interface?

Amit Singh · ‎07-13-2010

On all the interfaces. Different IOS have different behaviour. In older IOS, I used to do it only on the port-channel interfaces. Sometimes you get wiered behaviour if you are coniguring on different switches. As a best practice :

1. Shutdown the interfaces manually.

2. Configure all the ports as trunk ports.

3. Configure the port-channel parameters.

4. Configure interface parameters if required like speed/duplex.

5. no shut the interfaces.

This should work like a champ.

HTH,

-amit singh

View solution in original post

Amit Singh · ‎07-13-2010

On all the interfaces. Different IOS have different behaviour. In older IOS, I used to do it only on the port-channel interfaces. Sometimes you get wiered behaviour if you are coniguring on different switches. As a best practice :

1. Shutdown the interfaces manually.

2. Configure all the ports as trunk ports.

3. Configure the port-channel parameters.

4. Configure interface parameters if required like speed/duplex.

5. no shut the interfaces.

This should work like a champ.

HTH,

-amit singh

vincehgov · ‎07-13-2010

Thanks for the reply Amit.

I'll try it

Ganesh Hariharan · ‎07-13-2010

If I wanted the ports in my port channel to be trunking, do I have to
specify "switchport mode trunk" on each port or can I just specify it
on the port-channel interface?

Hi,

Amit has given the step by step procedure for configuring the port channel in switches and just check out the sample example in the below link hope to help !!

http://www.cisco.com/en/US/tech/tk389/tk213/technologies_configuration_example09186a0080094958.shtml

Ganesh.H