From: Stanley Seow (stanley_seow@xxxxxxxxxxxxxxxxxxx)
Date: Sat Apr 22 2000 - 15:23:24 GMT-3
Yes, you are on the correct track...
No Sync will dump the bgp table into your routing table ( assuming all
your IBGP are fully mesh ).
Another way is to put next-hop-self on the first router neighbour pointing
to your IBGP router so that it will know how to reach the next hop address.
Stanley
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> EHess
> Sent: Saturday, April 22, 2000 9:17 PM
> To: ccielab@groupstudy.com
> Subject: BGP brain block
>
>
> I am having a brain block with BGP when using IBGP in an AS. The situation
> is this: I have 2 routers in the same AS connected by a token ring network
> as IBGP peers. The first router is also an EBGP router and seems
> to show all
> routes properly in its routing table.
>
> The second router (IBGP peer) shows all the routes in its BGP
> table but not
> in the main routing table. It is my understanding that the routes
> should be
> displayed in the main routing table table because the second router has a
> route to the next-hop-address. The only way I can get this to work is by
> using the "no sync" command.
>
> Question: Am I correct in my thinking or can someone straighten me out on
> this matter. I am attaching copies of the main routing table and the BGP
> table.
>
> Thanks for any help,
> Edward Hess
>
> Gateway of last resort is not set
>
> R 172.18.0.0/16 [120/1] via 180.100.1.1, 00:00:02, TokenRing0
> 11.0.0.0/24 is subnetted, 1 subnets
> B 11.1.1.0 [20/0] via 180.100.2.2, 00:00:03
> 180.100.0.0/24 is subnetted, 2 subnets
> C 180.100.1.0 is directly connected, TokenRing0
> C 180.100.2.0 is directly connec
>
>
> happy#ping 172.18.105.1
>
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to 172.18.105.1, timeout is 2 seconds:
> !!!!!
> Success rate is 100 percent (5/5), round-trip min/avg/max = 40/41/44 ms
> happy#sh ip rou 172.18.105.1
> Routing entry for 172.18.0.0/16
> Known via "rip", distance 120, metric 1
> Redistributing via rip
> Advertised by rip (self originated)
> Last update from 180.100.1.1 on TokenRing0, 00:00:01 ago
> Routing Descriptor Blocks:
> * 180.100.1.1, from 180.100.1.1, 00:00:01 ago, via TokenRing0
> Route metric is 1, traffic share count is 1
>
> happy#sh ip bgp
> BGP table version is 20, local router ID is 180.100.2.1
> Status codes: s suppressed, d damped, h history, * valid, > best, i -
> internal
> Origin codes: i - IGP, e - EGP, ? - incomplete
>
> Network Next Hop Metric LocPrf Weight Path
> *>i10.1.1.0/24 180.100.1.1 0 100 0 i
> *> 11.1.1.0/24 180.100.2.2 0 0 400 i
> *>i160.1.1.0/24 172.18.105.1 100 0 200 100 i
> *>i161.1.1.0/24 172.18.105.1 100 0 200 100 i
> *>i163.100.0.0 172.18.105.1 100 0 200 100 i
> *>i171.17.1.0/24 172.18.105.1 0 100 0 200 i
> *>i171.18.1.0/24 172.18.105.1 0 100 0 200 i
> *>i172.18.0.0 172.18.105.1 0 100 0 200 i
> *>i172.18.104.0/24 172.18.105.1 100 0 200 100 i
> *>i172.18.105.0/24 180.100.1.1 0 100 0 i
> *> 180.100.0.0 0.0.0.0 0 32768 i
> * i 180.100.1.1 0 100 0 i
> *> 180.100.1.0/24 0.0.0.0 0 32768 i
> *> 180.100.2.0/24 180.100.2.2
>
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