RE: aggregate-address in bgp???

From: RSiddappa@xxxxxxxxxx
Date: Wed Feb 13 2002 - 12:45:45 GMT-3


   
What was the final config.

R.

-----Original Message-----
From: Shadi [mailto:ccie@investorsgrp.com]
Sent: Wednesday, February 13, 2002 7:37 AM
To: Siddappa, Rajeev
Cc: ccielab
Subject: Re: aggregate-address in bgp???

It worked but after rebooting both routers the next day, strange !!!

----- Original Message -----
From: <RSiddappa@NECBNS.com>
To: <ccie@investorsgrp.com>; <ccielab@groupstudy.com>
Sent: Tuesday, February 12, 2002 6:25 PM
Subject: RE: aggregate-address in bgp???

>
> Shadi,
>
> Can u post the routing table of R1.
>
> R.
>
>
>
>
>
>
>
> -----Original Message-----
> From: Shadi [mailto:ccie@investorsgrp.com]
> Sent: Tuesday, February 12, 2002 8:49 AM
> To: Siddappa, Rajeev; ccielab
> Subject: Re: aggregate-address in bgp???
>
>
> I did both the summary-only and the ip route null0 with same result,even I
> removed the ip route null0 with the same result.
>
>
> I am using 12.0(4)
>
>
> ----- Original Message -----
> From: <RSiddappa@NECBNS.com>
> To: <chrishugo@yahoo.com>
> Cc: <ccielab@groupstudy.com>
> Sent: Tuesday, February 12, 2002 11:07 AM
> Subject: RE: aggregate-address in bgp???
>
>
> > I guess the null 0 route will be added automatically when use the
> aggregate
> > address command.
> >
> > I would suggest to use the option summary-only at the end of the
> > Aggregate-address command.
> > then it should solve the problem.
> >
> > What is the IOS u r using.
> >
> > R.
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > -----Original Message-----
> > From: CHRIS HUGO [mailto:chrishugo@yahoo.com]
> > Sent: Tuesday, February 12, 2002 2:50 AM
> > To: Siddappa, Rajeev
> > Cc: ccielab@groupstudy.com
> > Subject: RE: aggregate-address in bgp???
> >
> >
> >
> >
> > Add that route to null 0 on the router that you are performing the
> > aggregate-address command
> >
> >
> > ip route 160.0.0.0 240.0.0.0 null 0
> >
> >
> > Let me know if this helps.
> >
> >
> > -chris hugo-
> >
> > RSiddappa@NECBNS.com wrote:
> >
> > By any chance does R1 has better routes to this aggregate or Aggregated
> > route.
> >
> > Then the behavior is absolutely acceptable.
> >
> > R.
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > -----Original Message-----
> > From: Shadi [mailto:ccie@investorsgrp.com]
> > Sent: Monday, February 11, 2002 12:20 PM
> > To: ccielab
> > Subject: aggregate-address in bgp???
> >
> >
> > Guys,
> >
> > I have simple scenario on BGP but with a strange behavior!!
> >
> > I have the below simple diagram which is a small network from a larger
and
> I
> > am running bgp and ospf in it. I wanted to summarize the loopback
> interfaces
> > on R2, I did that and it worked fine, the aggregate route is
160.0.0.0/4,
> > the
> > route got updated to R1, and it appears in the bgp table of R1, but
after
> a
> > while I get that the route got disappeared again and I don't know why,
> when
> > I
> > do debug it says: "no route to 160.0.0.0/4", but the next hop is
reachable
> > and
> > I can ping it from R1. I don't know why it appears in the R1 bgp table
for
> 1
> > min and then disappears again.
> >
> > Any suggestions? Of course bgp sync is off on all Routers.
> >
> >
> >
> > 10.10.10.1 10.10.10.2
> > R1<--------------------------------------------->R2
> > BGP AS2 BGP AS3
> > lo1:160.10.10.1/24
> > lo2:170.10.10.1/24
> > lo3:161.10.10.1/24
> >
> >
> >
> > R2:
> >
> > router bgp 3
> > no sync
> > aggregate-address 160.0.0.0 240.0.0.0 summary-only
> > redistribute connected
> > neighbor 10.10.10.1 remote-as 2
> >
> > R1
> >
> > router bgp 2
> > no sync
> > neighbor 10.10.10.2 remote-as 3
> >
> >
> > Shadi



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