BGP peering strategies for smaller routers

Richard Hicks richard.hicks at
Mon May 2 20:32:14 UTC 2016

Careful with the ASR1000 and full tables at 4GB.

I recommend adding some third party RAM to get 16GB.

On Mon, May 2, 2016 at 12:07 PM, Mike <mike-nanog at> wrote:

> Hello,
>     I have an ASR1000 router with 4gb of ram. The specs say I can get '1
> million routes' on it, but as far as I have been advised, a full table of
> internet routes numbers more than 530k by itself, so taking 2 full tables
> seems to be out of the question (?).
>      I am looking to connect to a second ip transit provider and I'm
> looking for any advice or strategies that would allow me to take advantage
> and make good forwarding decisions while not breaking the bank on bgp
> memory consumption. I simply don't understand how this would likely play
> out and what memory consumption mitigation steps may be necessary here. Im
> open to ideas... a pair of route reflectors? selective bgp download? static
> route filter maps?
> Thank you.
> Mike-

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