[c-nsp] Cisco 5500 sup iii w/ RSM performance

[Kris Amy]

So that mean's it should be able to handle ~100mbit of 1500byte packets that
are routed and whatever the modules/switching fabric can handle?

Cheers,
Kris

-----Original Message-----
From: David Coulson [mailto:david at davidcoulson.net] 
Sent: Wednesday, 6 December 2006 2:12 PM
To: Kris Amy
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] Cisco 5500 sup iii w/ RSM performance

Kris Amy wrote:
> Just wondering how much memory/routes these RSM can have and also it's
> throughput capabilities.

I believe the RSM is RSP2 based, so you can get up to 128Mb of DRAM in 
it. That can probably handle a single full table via BGP, but don't 
expect to do much else with it.

> To my understanding traffic that stays on the same vlan (ie just switched)
> doesn't hit the RSM, it's only when you have to literally route it.

Yup. If you've got a real router available and want decent L3 
performance, it might be worth hauling VLANs out of the switch on a ISL 
trunk and routing on separate hardware. An RSP2 is pretty anemic by most 
standards.

David