At 06:32 PM 1/8/2008 +0100, Peter Rathlev wrote: >On Tue, 2008-01-08 at 07:45 -0800, Mark Kent wrote: > > So, I'm looking at the cisco web pages and I see the 7600 is pushed > > big-time as a service provider edge device, and yet I see that the > > sup32-3b has a 300Mhz processor, and so it is not much faster than an > > NPE-300 (262Mhz). > > > > I stopped taking full routes on NPE-300 equipment a couple of years > > ago, moving to an npe-g1. So, what's the scoop with the > > 7600/sup32-3b? It seems like a step back to me, other than the 8 > > built-in gigE ports. > >The 7600 does hardware forwarding of most traffic (depends), and thus >does not use the processor for that. It's the PFC/DFC that does the >forwarding. That's an advantage. :-)
It forwards in hardware if the FIB will fit into the hardware FIB table. The full internet table will not fit into a PFC3b/DFC3b anymore since the hardware table, even after changing from the default will only get you 239k routes. For full routes one needs to use a SUP7203bXL / RSP720. Ian > > I'm looking at an application where the box would push a total of about > > 1Gbs over two gigE upstreams. It would have two gigE internal > > neighbors, each with full bgp routes... so four full tables. I'm > > concerned about the issue of traceroutes looking bad as they pass > > through the box (which confuses EndUsers), due to the cpu load from > > the bgp scanner. > >On Tue, 2008-01-08 at 12:14 -0500, Jared Mauch wrote: > > Simple answer: Sup32 is not viable for full bgp tables anymore. Enjoy > > it as a l2 device that can't do 10GE! > >With 512MB memory, it can't take a full table? The world is moving fast >I guess. :-) > >Anyway, you could adjust walker intervals etc. and maybe cope with the >tardy processor, but it's probably not a good idea. > >Regards, >Peter > > >_______________________________________________ >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/
