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Re: Cisco Router best for full BGP on a sub 5K bidget 7500 7200 orother vendor ?
Alexander Hagen wrote:
I bought a Riverstone Rs-3000 for BGP with a single upstream provider.Yeah, it might be a Great Deal (tm), but you're in for some surprises. I've seen an RS-8600 (with CM3 and 512MB on board) nearly melt under 13Mbps of Nachi, to the point that I had to set the CM failover keepalive timer to >30 seconds. We had a failover one night due to CPU exhaustion - I think the route reconvergence was actually worse than the performance of the box prior to the failover, but that's just my opinion. I've also seen the same unit nearly melt under 9Mbps of SQL Slammer - the CPU was so busy setting up flows that it was unable to rate limit this customer to 1Mbps or anywhere close. On a box with a 64Gbps backplane, I'm certainly not impressed, though I guess if I just used it as a switch it'd be happy.
Plus, you'll have a whole new learning curve for BGP. Wanna use a route map outbound? Expect it to reference the whole RIB, not just the BGP routes you've learned, redistributed, or flagged locally for announcement. Wanna edit a route map? sh run groups similar commands together, but sorts them in the order they were input, regardless of route map name and/or sequence number. The only strong point that jumps out is the ability to comment - I just wrote "ALL" of the route maps I thought I'd need and commented the maintenance and emergency segments before deploying it. And I guess cascading route maps on BGP sessions is a benefit, at least to overcome the CLI sorting.