On Sun, Aug 29, 2010 at 11:00:55AM +0400, Pavel Lunin wrote: > > > * The Trio PFE is good for around 55Mpps of lookups, give or take, > > depending on the exact operations being performed. > > 55, not 65? Anyway, this is what I can't understand (maybe because of > my not-native English). When you say 'give or take', you mean it can > only do 55/65 for both directions or 55/65 for ethernet->backplane and > 55/65 backwards?
55 million PACKETS/sec of lookups per PFE, no directionality to that. Lookups are done at ingress. And 55 is what I'm told, not 65. > If this is an LU overall limit for both direction than either I can't > manage to convert pps to bps (65pps is about 30 Gigs for 64-byte > packets, isn't it) or everything has is twice less performance than we > think (not likely though). Bandwidth is a completely different limitation, which comes from the MQ and/or fabric limits. Technically 4 ports of 10GE would exceed the 55Mpps, 14.488Mpps * 4 = 57.952Mpps, so you wouldn't quite be able to get line rate on small packets even with local switching. -- Richard A Steenbergen <[email protected]> http://www.e-gerbil.net/ras GPG Key ID: 0xF8B12CBC (7535 7F59 8204 ED1F CC1C 53AF 4C41 5ECA F8B1 2CBC) _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
