[j-nsp] Limit content of bgp.l3vpn.0

Adam Vitkovsky Adam.Vitkovsky at gamma.co.uk
Thu Sep 29 03:09:54 EDT 2016

> Of Johan Borch
> Sent: Wednesday, September 28, 2016 5:50 PM
> Hi
> I don't have a route-reflector, this is a full iBGP mesh, will family route-target
> still work?
Yes it will,
But be aware that the BGP session(s) will flap when this new AF is added as a result of new capability negotiation and update-group assignment.
And the BGP update generation procedure will consume more memory and CPU cycles on speakers with this feature enabled "router1" (something you might not even notice -depends on number of peers, prefixes and CPU power).  Since Junos can't generate update msg based on commonalities in egress policies (i.e. "dynamic update peer-groups"), I believe it will put each neighbour in its own update-group and generate update message for each peer independently, even though multiple peers might request the same set of RTs (i.e. have same set of egress policies).


        Adam Vitkovsky
        IP Engineer

T:      0333 006 5936
E:      Adam.Vitkovsky at gamma.co.uk
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