Vince,
Is this really a common case? BARRNet has two attachments to ANS/NSFNET, but they are strictly primary/secondary, so the same aggregates will be advertised at both locations.
Two regionals I can think of off hand are Suranet and CANET. NASA and ESNET and other agencies connected at both FIXes also load balance. There may be others.
Any network provider which is using multiple ANS/NSFNET connections to split load should have an addressing plan that assigns a different aggregate to each exit point. The basic rule is: for each routing policy you have, you should have different CIDR block. I thought we'd been over this in at least the Regional Techs forum before.
--Vince
We all know that and it is goodness. But the analysis that Tony did was based on AS aggregation of all network numbers including those in assigned prior to CIDR and those assigned in the early in the CIDR deployment when allocation may not have been quite as systematic. I'm not saying CIDR isn't going to be highly beneficial, it will be. I'm just saying that Tony's figures are optimistic. Since I don't have a better analysis to offer, and having made my minor point, I'll shut up now. :-) Curtis