From: Peter van Oene (pvo@xxxxxxxxxxxx)
Date: Tue Mar 12 2002 - 19:40:12 GMT-3
It is always wise to keep in mind the reasons various options exist in the
first place. IE, what problems where the designers trying to solve. Route
Reflection deals with peering in a topology that is fully meshed from an
IBGP perspective. Synchronization deals with route advertisement in a
topology that does not have a full IBGP mesh. Hence, these options are
designed for different networks and not likely to work well
together. Further, they shouldn't work together nor is there any sound
reason to try and make them work together.
At 01:15 AM 3/13/2002 +0800, kenairs wrote:
>Hi ,
>So in others words, aparting from redistribute into IGP , RR will only works
>if you have turn off syn.
>Am i correct ?
>
>Or is there any other way beside redistributing to IGP ?
>
>----- Original Message -----
>From: Sandro Ciffali <sandyccie@yahoo.com>
>To: kenairs <kenairs@hotmail.com>
>Cc: <ccielab@groupstudy.com>
>Sent: Wednesday, March 13, 2002 12:38 AM
>Subject: Re: BGP RR
>
>
> > Since you have sync on, Network advertize by R2 on bgp
> > will go into R1's routing table only if it is recd.
> > both on BGP and IGP, Only then R1 will advertize that
> > network to R3.
> > If you turn off the sync on R1 then you will see it
> > being advertized to R3.
> > Or else redistribute the ethernet on R2 into your
> > igrp.
> >
> > Sandro
> > --- kenairs <kenairs@hotmail.com> wrote:
> > > Hi ,
> > > From the Cisco CD , is states the below
> > >
> > > When the route reflector receives an advertised
> > > route, depending on the
> > > neighbor, it does the following:
> > >
> > >
> > > a.. A route from an external BGP speaker is
> > > advertised to all clients and
> > > nonclient peers.
> > >
> > >
> > > b.. A route from a nonclient peer is advertised to
> > > all clients.
> > >
> > >
> > > c.. A route from a client is advertised to all
> > > clients and nonclient peers.
> > > Hence, the clients need not be fully meshed.
> > > Here is my topology,
> > >
> > > R1
> > > | |
> > > | |
> > > | |
> > > R2 R3
> > >
> > > All routers are able to reach each other through IGP
> > > ( eigrp ) . R1 is the RR
> > > R2 and R3 is the client.
> > >
> > > Now, R2 has a E0 . It then have a network command
> > > under BGP and is propagrate
> > > to R1.
> > > But R1 does not advertised the route to R3 ..
> > > Why is this so ?
> > > All routers are syn enabled.
> > >
> > >
> > > but is R2 received a route from another AS, the
> > > route will be advertised to
> > > R3.
> > >
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:57:02 GMT-3