[j-nsp] Junos BGP update generation inefficiency -cause for concern?

[Mark Tinka]

On 18/May/15 14:11, Scott Granados wrote:
> I’m not sure exactly what you’re looking for but the peer group system under JunOS is fairly efficient.  If you set your export and import policies per group the bgp process will place these in a peer group and dynamically break off slow members in to their own groups so that one slower peer won’t cause the other members in the same peer group to synchronize as slowly.  Cisco does not or at least did not do this as I understand things.  In the cisco case if a peer group member lags it causes the other members of the same peer group to lag and doesn’t allow updates until the slowest member catches up.  Since BGP under Junos breaks this slow guy off on it’s own you don’t have the same limitation.  This all happens dynamically.

If memory serves, Cisco recently developed some kind of feature to deal
with slow peers to fix this very issue:

http://www.cisco.com/c/en/us/td/docs/ios/ios_xe/iproute_bgp/configuration/guide/2_xe/irg_xe_book/irg_slow_peer_xe.html

Okay, so maybe not recently...

Mark.