Hi, well, the 720Gbps is just the total aggregate bandwidth that the switch fabric backplane is able to support: 9 slots with dual 20Gbps switch fabric capacity each. Then multiply it by 2 because they work full-duplex. Chassis with less than 9 slots will have less than 720Gbps aggregate capacity; chassis with more than 9 slots will have some of them connected through a single switch fabric strand. Indeed, this might have some implications while designing the box, ie. going 10G or having high-density 1G linecards. On the other side, introducing DFCs will give your box more throughput in terms of Mpps it can actually switch.
Cheers, Paolo On Tue, Feb 12, 2008 at 10:13:31PM +0000, MKS wrote: > Hi list > > I know that the cisco 7600/SUP-720 is popular as a PE and sometimes as > a P also, but my questions is how much traffic are you pushing through > a 7600. (ip or mpls) > We have all heard the 720Gbps claim (with the right cards, DFC etc) > but how does it actually perform and what kind of problems do you run > into under heavy load. > I can think of serveral things that can go bad e.g. interface drops, > fabric utilization, rp cpu load, weard dfc bugs, etc > What's *your* experience? > > Regards > MKS _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
