[c-nsp] full routes / backup router

[Reuben Farrelly]

A 2900 would cope fine with this, for sure.

Just for kicks I ran a full BGP feed to an 1841 one day a few years back 
and after the initial onslaught of populating the routing table it coped 
fine with the incremental BGP updates coming in after that.

Not that I would ever recommend it but....

Reuben



On 10/12/2010 4:07 AM, Adam Greene wrote:
> 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
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