From: Piyoush Sharma (piyoush@gmail.com)
Date: Wed Jun 04 2008 - 11:50:00 ART
In the above scenario, R1 and R2 would have to be the RR. As per the Brians
and reference from IRA (Sam Halabi), RR shud have peering with all or max
no. of iBGP peers to propagate BGP route information (within the AS). As per
the config, only R1 and R2 are peering with both r3,r4 and each other. That
would make r1/r2 as the RR. R3/R4 cannot be the RR because they are not
peering directly with each other. If they were the RR, then a route
propagated by R3 ->R1/R2 (or R4->R1/R2) would not be forwarded to R4 (or R3)
as per the iBGP rules.
If you use Jason's analogy, a logical BGP peering diagram would reveal that
R1 and R2 would be the 'hubs' for this particular topology.
Piyoush.
On Wed, Jun 4, 2008 at 3:48 AM, devil evil <ccieking@gmail.com> wrote:
> Hi experts
>
> Thanks for your answer
>
> I was consult with one of my senior (he is a CCIE R&S). He said if you
> configure in R1 and R2 as a route-reflector it's not a mistake. Is he
> right
> can anyone explain me?
>
> Regards
>
>
> On Wed, Jun 4, 2008 at 8:04 AM, Huan Pham <Huan.Pham@peopletelecom.com.au>
> wrote:
>
> > Option 1 is what you need. R3&R4 should be route-reflectors (where you
> > configure route-reflector-client)
> >
> > Option 2 does nothing.
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> > 2008ccie@live.com
> > Sent: Sunday, 1 June 2008 5:50 AM
> > To: ccielab@groupstudy.com
> > Subject: Route-Reflector-client
> >
> > Hi experts
> > here is my simple scenario I am confused in route-reflector-client.
> > Can anyone explain me? which one is right?
> >
> >
> > |-----R3-----|
> > R6-----R1 R2--------R5
> > |-----R4-----|
> >
> > R6---------------AS 100
> > R1,R2,R3,R4 -- AS 200
> > R5 ---------------AS 300
> >
> > R6
> > router bgp 100
> > nei 10.0.0.1 remote-as 200
> >
> > R1
> > router bgp 200
> > nei 10.0.0.6 remote-as 100
> > nei 20.0.0.3 remote-as 200
> > nei 20.0.0.4 remote-as 200
> > nei 20.0.0.2 remote-as 200
> >
> > R3
> > router bgp 200
> > nei 20.0.0.1 remote-as 200
> > nei 20.0.0.2 remote-as 200
> >
> > R4
> > router bgp 200
> > nei 20.0.0.1 remote-as 200
> > nei 20.0.0.2 remote-as 200
> >
> > R2
> > router bgp 200
> > nei 30.0.0.5 remote-as 300
> > nei 20.0.0.3 remote-as 200
> > nei 20.0.0.4 remote-as 200
> > nei 20.0.0.1 remote-as 200
> >
> > R5
> > router bgp 300
> > nei 30.0.0.2 remote-as 200
> >
> >
> >
> > i am confusing in route-relector where i configure?
> > option 1
> >
> > R3
> > nei 20.0.0.1 route-reflector-client
> > nei 20.0.0.2 route-reflector-client
> >
> > R4
> > nei 20.0.0.1 route-reflector-client
> > nei 20.0.0.2 route-reflector-client
> >
> > or option 2
> >
> > R1
> > nei 20.0.0.3 route-reflector-client
> > nei 20.0.0.4 route-reflector-client
> >
> > R2
> > nei 20.0.0.3 route-reflector-client
> > nei 20.0.0.4 route-reflector-client
> >
> > Regards
> >
> >
> > _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
> >
> >
> > _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
>
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
This archive was generated by hypermail 2.1.4 : Tue Jul 01 2008 - 06:23:20 ART