[c-nsp] full routes / backup router

[Adam Greene]

Thanks Gert, Joseph and Jorge.

We need to pass the full routing table to a customer who is load 
balancing between us and another upstream provider.

As far as data throughput goes, yes, the 2911 looks like a good fit. But 
I was concerned about whether the CPU would be able to handle the 
frequent BGP updates associated with a full routing table. The 
routerperformance.pdf unfortunately does not list the process switching 
specs on the 2900's.

The 2911 would be a cold spare, to be used only when the 7204VXR dies.

Thanks,
Adam


On 12/9/2010 2:30 AM, Gert Doering wrote:
> Hi,
>
> On Wed, Dec 08, 2010 at 06:30:08PM -0500, Adam Greene wrote:
>> I need a backup router for a 7206VXR/NPE-400/512MB RAM than can handle
>> full routes from a single eBGP peer. Router provides transit to an
>> end-user. Remaining configs on router are minimal, max throughput is
>> about 30-40Mbps.
> What good is "full routes from a single peer"?  Just point a default
> route there...
>
>> Would a 2911/512MB RAM be sufficient? Or is the CPU too puny? Maybe we
>> need a 3825/521MB RAM? Or I guess we could just get a backup
>> 7206VXR/NPE-400/512MB RAM.
> As per the routerperformance.pdf, the 2911 is (regarding packet forwarding)
> nearly as fast as the NPE-400, and the 2921 would be somewhat faster - so
> if then NPE-400 is sufficient now, the 2921 should do well as backup.
>
> OTOH, why bother with BGP full tables if all you have is a single peer.
>
> gert