[c-nsp] is RPF strict mode common?

[Adam Greene]

Hi,

Trying to control bandwidth between my (2) upstream Internet providers, Global Crossing (20Mbps) and Savvis (50Mbps). I currently receive full routes from both, and the smaller Global Crossing link is maxed out, inbound.

The obvious solution to me will be to prepend my route announcements to Global Crossing. However, one question: there is a good chance that some of my traffic will flow out through Savvis and in through Global Crossing (in fact, that's almost certainly happening right now). Will this kind of asymmetrical traffic run into issues with other ISPs that deploy RPF in strict mode? Are there many ISPs out there that do this? It seems that so much traffic on the Internet must be asymmetrical, any ISPs running RPF in strict mode must be doing so in a way that will not break traffic that's asymmetrical because of other ISPs' standard routing policies. IF they do, then they would be causing dead spots for their own customers ... do you think that's a valid assumption?

Thanks for your advice.
Adam