Re: [RAM] Re: the separation of ID/RLOC

[Christian Vogt <christian.vogt at nomadiclab.com>]

> 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.

Tony,

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?

The only case where this would make sense is, IMO, a scenario in which
all of an edge network's providers allow only unidirectional traffic,
either ingress or egress.  That edge network would want to chose a
different provider for ingress than for egress.

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...

- Christian




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