to configure the Main router interace or leave it unconfigured.

[hector.rojas]

My coworkers and I were having a heated discussion reguarding the first physical interface (or the main interface)on a router when configuring router on a stick. The question I have is as follow:

what is the best practice to follow when configuring router on the stick.?

do you define the main physical interface or leave it unconfigured ?

or do you begin configuration from the first subinterface?

I like your opinion.

Thanks

hector

[MickPhelps]

If you're configuring DOT1Q trunking, you'll need to configure the main for the native VLAN. If you're using ISL, you only need to NO SHUT on the main.

The order shouldn't matter either way.

Mick.

[hector.rojas]

Does a design guide exist that I can share with my co-workers.

[Prashanth Krishnappa]

http://www.cisco.com/warp/public/473/#Trunking

[hector.rojas]

I read your document, Thanks for the information. One more question. Can I assume that it is not common practice by network engineers to not configure the first main interface on a router. Your document is clear, the decision is made depending on software version and encapsulation conciderations. is this right?

[Bradley Littlejohn]

You have to config sub int

http://www.cisco.com/warp/public/473/50.shtml

Do not send it a lot of traffic. Remember the bottleneck in the network will be the FE interface on the router. It is only a 100meg. and it has to provide service to 24 100 meg ports (2621 with a 2924xl)