I guess any BGP PIC is out of the question on 7600 with flat fib and single uplink.
Regards On Sat, Apr 26, 2014 at 12:50 PM, Cydon Satyr <[email protected]> wrote: > I see. But then is there any effect of having repair path installed with > "bgp additional-paths install" command on platform without Hierarchical > FIBs or is it purely cosmetic? > > Thank you again :) > > > On Sat, Apr 26, 2014 at 8:00 AM, Oliver Boehmer (oboehmer) < > [email protected]> wrote: > > > > > >Thank you all; so let me just see if I got this right. > > > > > >If we're not loadbalancing with IGP (instead there's primary/backup > > >uplink) > > >on edge, and not using H.FIB (with cef table output-chain build favor > > >convergence-speed) and we're running full BGP table on edge routers, > > >anyone > > >with experience on how would flat FIB affect convergence without PIC > Core > > >on 7600? In other words what would be real life effect of rewriting > couple > > >of hundred thousand entries to point to new output interface in terms of > > >convergence? > > > > I don't have a recent performance study, but I saw a 7600 w/ 200k IPv4 > > prefixes taking ~17 seconds to rewrite all prefixes, where hierarchical > > FIB cut this down to < 1 sec. > > > > > > > >If you don't mind, could you explain part with "VPNv4 requires recirc" ? > > >I'm not sure what does that mean in relation with PIC Core? > > > > it means it'll cut the pps performance in half for vpn traffic with > H.FIB. > > > > > > > >And if I understand, since we're already installing in CEF 'repair' path > > >in > > >PIC Edge scenario, then H.FIB is not really required? > > > > It is. We can't leverage the repair path unless we have a hierarchical > FIB > > structure. > > > > oli > > > > > > _______________________________________________ > > cisco-nsp mailing list [email protected] > > https://puck.nether.net/mailman/listinfo/cisco-nsp > > archive at http://puck.nether.net/pipermail/cisco-nsp/ > > > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
