[j-nsp] Two RRs

[Stefan Fouant]

> -----Original Message-----
> From: juniper-nsp-bounces at puck.nether.net [mailto:juniper-nsp-
> bounces at puck.nether.net] On Behalf Of alaerte vidali
> Sent: Wednesday, April 28, 2010 2:19 PM
> To: juniper-nsp at puck.nether.net
> Subject: [j-nsp] Two RRs
> 
> Hi,
> 
> When configuring two route reflectors on same clusters for redundancy
> purpose, does it matter if the backup reflector is configured inside
> the
> same group for clients?
> 
> For example:
> 
> group RRclients
> type internal
> cluster 1.1.1.1
> neighbor "client1"
> neighbor "client2"
> neighbor "RR2"
> 
> group NonRRclients
> type internal
> neighbor "client3"
> 
> Or is it mandatory configure the other RR out of the group where
> cluster ID
> is configured?
> 
> Like this:
> 
> group RRclients
> type internal
> cluster 1.1.1.1
> neighbor client1"
> neighbor "client2"
> 
> group NonRRclients
> type internal
> neighbor "client3"
> neighbor "RR2"
> 
> 
> I guess my question/confusion is because on Cisco we have explicity
> command
> to define neighbor as RRclient or notRRclient, and the backup RR is not
> configured as client.
> 
> As Juniper does not have so, I need to know if Juniper will consider
> the
> backup RR as client if I configure it inside the group where "cluster"
> command is used.

Either approach will work...

I guess the broader question is how you intend on getting this to work since
each router will see its own Cluster-ID in the Cluster-ID-List and assume a
loop is taking place.  In most designs it is considered best practice to use
unique Cluster-IDs on each of your Route Reflectors.

Stefan Fouant, CISSP, JNCIEx2
www.shortestpathfirst.net
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