From: Jay Chandradas (jachandr@xxxxxxxxx)
Date: Tue Aug 14 2001 - 14:47:30 GMT-3
sanjay,
I think you may have to run BGP on hub router as wel. I think.. this is what
is hapening correct if I am wrong.
in R2 the next hop to reach the BGP backbone is the address of R3 facing
r1.. this is correct. Now when a pkt tries to reach the BGp net.. from R2..
it finds the next hop as the ip address of R3.. R2 in turn does a recursive
look up and send the pkt to r1. Now r1 has no idea about the BGP routes that
we are talking about.. It drops the packet.
Jay.
----- Original Message -----
From: "sanjay" <ccienxtyear@hotmail.com>
To: "Jay Chandradas" <jachandr@cisco.com>
Cc: <ccielab@groupstudy.com>
Sent: Tuesday, August 14, 2001 10:28 AM
Subject: Re: BGP Scenario
> Jay,
>
> I do have "no sync" on R3 and R2 and also both of them have the
> next-hop-self command. When I configure BGP on R1, then I can ping from R2
> to the BGP net. I can ping the BGP net from R3. On R2, the next hop
address
> to reach the BGP net is the address of R3. I can ping from R2 to R3
without
> any issues. It's just weired.
>
> thanks,
> Sanjay
>
>
>
>
> ----- Original Message -----
> From: "Jay Chandradas" <jachandr@cisco.com>
> To: "sanjay" <ccienxtyear@hotmail.com>
> Cc: <ccielab@groupstudy.com>
> Sent: Monday, August 13, 2001 8:48 PM
> Subject: Re: BGP Scenario
>
>
> > sanjay,
> > I think I missed some points ..
> >
> > Can you ping BGP net from R3 successfully.. ? I assume u can.
> >
> > in R2 what is the next hop to reach the BGP nets..may be ur DMZ is not
> > known to the inside network . In that case you may have to do a next hop
> > self at R3.
> >
> > HTH
> > Jay.
> >
> > At 07:05 PM 8/13/2001 -0700, sanjay wrote:
> > >I have 3 routers in a hub & spoke configuration across a frame cloud.
R1
> has 2
> > >sub-interfaces. One goes to R2 and the other to R3. Between
(subinterface
> > >1)R1---R2, I have OSPF running and between (subinterface 2) R1--R3, I
> have
> > >IGRP running. OSPF and IGRP are configured with a /24 mask and so
> > >redistribution is working fine. From R3, I have a serial connection to
a
> BGP
> > >net. On R2, I have setup IBGP connection to R3.
> > >I can see all routes from the BGP net in the routing table of R2, but
> when I
> > >try to ping the BGP Net, it doesn't work. Doing a trace, I find that
the
> > >packet gets dropped at R1 (subinterface that belongs to OSPF). I have
> neighbor
> > >x.x.x.x route-reflector-client configured on both routers.
> > >
> > >Is the above possible to get to work. ?? I can ping from R2 to R3, but
> not
> > >from R2 to the BGP net. Any info is appreciated.
> > >
> > >thanks,
> > >Sanjay
> > >**Please read:http://www.groupstudy.com/list/posting.html
**Please read:http://www.groupstudy.com/list/posting.html
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