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Re: Are SW upgrades needed in MPLS core networks?
> > 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. That probably would not yield half the performance, but a really crappy performance according to my standards (not so tight as Randy's). > > 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. In a ground-up design, yes. Upgrading an existing network in low capex times is not that easy to do. Rubens