Re: BGP synchronisation: Doyle page 175

From: Jason Gardiner (gardiner@xxxxxxxxxx)
Date: Sat Aug 18 2001 - 17:09:36 GMT-3


   
yYour next hop for the first sh ip bgp sum is 0.0.0.0. It doesn't appear
that the route to the peer is good. If you're using loopbacks as the peer
id, do you have ebgp multihop and update source loopback X in the configs
on both sides?

Thanks,

Jason Gardiner
Supervisor, Engineering Services
Sprint E|Solutions

"You can swim all day in the Sea of Knowledge and
still come out completely dry. Most people do."

- Norton Juster

On Sat, 18 Aug 2001, Michael Wong wrote:

> BGP gurus ..... I am trying to do the example in Doyle Vol II, page 175 with
BGP synchronisation and OSPF.
>
> I have BGP routes going between AS100, AS300 and AS200 ..... however for some
 reason the routes from these AS's are not being advertised into AS400. If I do
 a debug on the Telluride router I get the output below. I cannot seem to find
what this output means anywhere on the Cisco site. I am assuming it's got somet
hing to do with these routes not being able to be propagated to Alta.
>
> 00:07:16: BGP(0): no valid path for 0.0.0.0/0
> 00:07:16: BGP(0): no valid path for 192.168.1.208/30
> 00:07:16: BGP(0): no valid path for 192.168.1.212/30
> 00:07:16: BGP(0): no valid path for 192.168.1.216/30
> 00:07:16: BGP(0): no valid path for 192.168.1.224/30
> 00:07:16: BGP(0): no valid path for 192.168.100.0/24
> 00:07:16: BGP(0): no valid path for 192.168.200.0/24
> 00:07:16: BGP(0): no valid path for 192.168.250.0/24
>
> If I look in Alta's BGP routing table, all I see is the following (no routes
from the other AS's), even though it has an adjacency with Telluride ....
>
> BGP table version is 6, local router ID is 192.168.75.1
> Status codes: s suppressed, d damped, h history, * valid, > best, i - interna
l
> Origin codes: i - IGP, e - EGP, ? - incomplete
>
> Network Next Hop Metric LocPrf Weight Path
> *> 192.168.1.200/30 0.0.0.0 0 32768 i
> *> 192.168.50.0 0.0.0.0 0 32768 i
> *> 192.168.75.0 0.0.0.0 0 32768 i
>
> Telluride's BGP table has all the routes so I'm assuming that synchronisation
 is OK.
>
> BGP table version is 6, local router ID is 192.168.1.206
> Status codes: s suppressed, d damped, h history, * valid, > best, i - interna
l
> Origin codes: i - IGP, e - EGP, ? - incomplete
>
> Network Next Hop Metric LocPrf Weight Path
> * i0.0.0.0 192.168.1.221 100 0 100 i
> *> 192.168.1.200/30 192.168.1.205 0 0 400 i
> * i192.168.1.212/30 192.168.1.221 0 100 0 300 i
> * i192.168.1.216/30 192.168.1.221 0 100 0 100 i
> *> 192.168.50.0 192.168.1.205 0 0 400 i
> *> 192.168.75.0 192.168.1.205 0 0 400 i
> * i192.168.100.0 192.168.1.221 0 100 0 100 i
> * i192.168.200.0 192.168.1.221 409600 100 0 100 i
> * i192.168.250.0 192.168.1.221 0 100 0 300 i
>
>
> The previous example used the same network without BGP synchronisation and ju
st using IBGP, this was OK and routes were propagated into AS400.
>
> Help please ....... MW
> **Please read:http://www.groupstudy.com/list/posting.html
**Please read:http://www.groupstudy.com/list/posting.html



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