Re: your mail

[Ramakrishna Gummadi <ramki@cs.berkeley.edu>]

> > doubled, but how to deal with the doubled traffic should be a decision
> > between the provider and the subscriber according to the SLA. Increased
> > load could cause higher packet loss, greater latency, etc. Indeed, if the
> > provider were using fair queuing, this would what happen, without
> > affecting any other customers of the provider.
>
> The last sentence is what's wrong.  A single router does not a backbone
> make.  You seem to forget that a tunnel is not a wormhole.

But that is the beauty of fair-queuing and variants---the single router
implementing FQ can perform virtual admission control, guaranteeing that
no more than the specified percentage of traffic from a subscriber can be
injected into the network. Also, it only needs to be implmented in the
border routers.


thanks,
ramki