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Re: Are SW upgrades needed in MPLS core networks?
On Fri, Feb 06, 2004 at 04:39:09PM -0200, Rubens Kuhl Jr. wrote: > > > > > > Even hardware with good IPv6 performance seems to forward at half > the > > > rate > > > > > of IPv4/MPLS packets; > > > > > > > > we call that crappy hardware > > > > > > Based on such point of view, non-crappy hardware would be: (blank) and > > > crappy hardware would be (blank), could you fill the blanks ? > > > > As with so many other situations, the blanks can be filled in with > > "Juniper" and "Cisco", in that order. > > I don't get why Juniper and Cisco trie-lookup forwarding would differ in > comparing IPv4 and IPv6; Juniper does a 8+1+1+1+1+... search until a leaf > node is found, while Cisco does 16+8+8 (or something near it but still with > 3 phases); for both architetures, IPv6 longer addresses implies walking more > deeply into the tree in order to find where to route. Uhh...... One trie lookup is fully supported in ASIC, the other is not. > Just to be sure, my point here is not where the effective IPv6 performance > suits one needs or not, but wether a router that can forward <amount> Mpps > of IPv4/MPLS packets can also forward the same amount of IPv6 packets per > second. Personally I'd say the routing protocol functionality and stability is as important if not more important. I don't see the point in implementing a v6 network consisting of seperate 7206vxrs (to contain the ios crashes) and tunnels, if you're going to bother with it at least do it native and do it right. -- 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)