On Jul 11, 2007, at 3:34 AM, Christian Vogt wrote:
If E prefers P1 as ingress and F prefers P2 as egress and there's no P1-P2 link, then you end up violating E's preferences.
why would E prefer an ingress provider (P1 in this case) via which it cannot reach correspondent edge networks?
Or vice versa, why would F prefer an egress provider (P2 in this case) via which it cannot be reached by correspondent edge networks?
You are raising an interesting point. I wonder how often this happens,
though. Do you have some more insight on this? And one should also
take a look at the impact of such asymmetry on applications...
Tony
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