[c-nsp] ASR1002-X & (2) full BGP feeds

[Nikolay Shopik]

1,000,000 limit is FIB which is only best routes(500K+ routes), RIB only
consume RAM.

You'll be fine with 8Gb memory, but if you plan to use non-cisco memory,
just go with 16Gb its cheap. 16Gb will be enough to store 25M routes as
Route-Server last I heard from Cisco.

IOSd will only consume half memory of available for platform. Regardless
ISSU (which is need additional memory if enabled).

On 19/03/15 16:19, Adam Greene wrote:
> -          It looks like a full BGP routing table is currently about 566,000
> routes. Since only the best route to any given destination is stored in the
> routing table, is it safe to assume that even taking (2) full feeds, the
> customer will stay well below the 1,000,000 route maximum? (the number of
> internal routes is negligible)
> 
> -          Is 16GB RAM really necessary for (2) full BGP feeds in the real
> world? Seems like overkill to me. I seem to recall that when
> "soft-reconfiguration inbound" is enabled with (2) peers, it in effect
> causes 1.5x or 2x the amount of RAM to be used. However, even with this
> caveat, shouldn't 8GB RAM be sufficient?
> 
> -          Safe to assume the processor on an ASR1002-X should have no
> problem managing 2 full BGP feeds? About 200Mbps aggregate bandwidth
> currently flows through the router, and it consistently runs at 0% CPU
> utilization