[c-nsp] atm ubr settings?

[goemon at anime.net]

I am arguing with another engineer over provisioning of our customer ATM 
PVCs.

His argument goes something like:

"Configuring every ubr pvc to 45mbps by default does not hurt anything, 
regardless if the customer's circuit is telco provisioned for 256k or
1.544mbps or anything else. Therefore, this is a valuable method to 
prevent us from having to waste any time ever configuring customer pvcs 
at all"

He justifies his position with some tcp download tests of the pvc set for 
the proper (telco provisioned) line rate, and then comparing it to tcp 
download tests with the pvc set to ubr 45mbps, and seeing "no difference".

I suspect this is a bad idea, but I would like an ATM expert's input on this.

-Dan