[c-nsp] BGP maximum-prefix on ASR9000s

[Mark Tinka]

On 3/Feb/20 23:15, adamv0025 at netconsultings.com wrote:

> Have you tested what happens with an XR BGP when a valid peer sends
> you ~2,147,483,647 prefixes please?
> My guess is the BGP runs out of memory and restarts -what happens to the FIB on all line-cards I'm not even guessing...
> And then the RRs pushing 2bilions of prefixes to all other PEs in the AS...
> I actually haven't tested so would be interested to know.

So we only set the maximum value for this on iBGP sessions for our IOS
XR boxes. Which makes sense.

On eBGP sessions with peers, we impose a pre-defined maximum value
which, generally, is a couple hundred prefixes for IPv4/IPv6, unless
specifically advised by the external peer.

Mark.