North American Network Operators Group
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Re: Asymetrical Routing
- From: Vern Paxson
- Date: Thu Aug 21 20:30:40 1997
> My question is: How bad is this? Is it terminaly bad or simply not
> so great?
Asymmetric routing by itself has virtually no impact on performance. It does
present a measurement headache, though. This is discussed in a paper of mine
available from
ftp://ftp.ee.lbl.gov/papers/routing.SIGCOMM.ps.Z
a revised version of which will be appearing in IEEE/ACM TON later this year.
> Out of order TCP packets are bad, but can simply be reassembled.
Asymmetry doesn't lead to out-of-order delivery, so this isn't a problem.
Routes that *change* often, on the other hand, can indeed lead to performance
problems.
Vern
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