[cisco-bba] Disadvantages of Virtual Access Interface over VirtualAccess Sub-Interfaces

[Oliver Boehmer (oboehmer)]

cisco-bba-bounces at puck.nether.net <> wrote on Friday, December 01, 2006
7:05 AM:

 
> After pushing Cisco AVP "lcp:interface-config#1=rate-limit
> ...." via AAA Server on PPPoE user, virtual access interfaces
> are cloned instead of virtual access sub-interfaces. May I
> know the disadvantages of virtual access interfaces over
> virtual access sub-interfaces?

The main advantage of VAI sub-interfaces is the lower overhead managing
them, especially when the session comes up and a new interface needs to
be created. Realistically you'll see a difference under a high session
load (> 10 or so new sessions/second).
So unless you're using this in a larger-scale BRAS environment with a
high session load, I wouldn't worry about it.

	oli