From: Brett Rilling (BRilling@xxxxxxxxxxxxx)
Date: Thu Aug 01 2002 - 11:32:38 GMT-3
I am getting the exact same result Umit is only I am not using the router
IDs. Instead I am using only one loopback for each router. So the IDs should
be the same. My set up is r1-----r5(RR)------r2
Network Next Hop Metric LocPrf Weight Path
* i71.71.71.0/24 1.1.1.1 0 100 0 i
r2#debug ip bgp up
BGP updates debugging is on
r2#clear ip bgp *
r2#sh ip bgp
r2#
1d14h: BGP: 5.5.5.5 computing updates, neighbor version 0, table version 1,
starting at 0.0.0.0
1d14h: BGP: 5.5.5.5 update run completed, ran for 4ms, neighbor version 0,
start version 1, throttle
d to 1, check point net 0.0.0.0
r2#
1d14h: BGP: 5.5.5.5 rcv UPDATE w/ attr: nexthop 1.1.1.1, origin i, localpref
100, metric 0, originat
or 1.1.1.1, clusterlist 5.5.5.5
1d14h: BGP: 5.5.5.5 rcv UPDATE about 71.71.71.0/24
1d14h: BGP: no valid path for 71.71.71.0/24
-----Original Message-----
From: David [mailto:wicked01@ix.netcom.com]
Sent: Wednesday, July 31, 2002 5:31 PM
To: \mit Askan; 'Brett Rilling'
Cc: Ccie (E-mail)
Subject: RE: BGP with OSPF Synch
match BGP's router ID with the originator's OSPF router ID...
so make R1's BGP router ID match R3's OSPF router ID and vice versa
At 07:51 PM 7/31/2002 +0300, TK-Network Gvz|mleri wrote:
>Yep,
>
>there is no problem with the router id's. I van see all the routes at
>the R3.
>Also I can see 71.71.71.0 at R3's route table !!!
>But it shows not snchronised. Funny ?
>See the route table :
>
>R3---------------------------------------------------------------
>R3#sh ip route
>Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
> D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
> N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
> E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
> i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS
>inter area
> * - candidate default, U - per-user static route, o - ODR
> P - periodic downloaded static route
>
>Gateway of last resort is not set
>
> 1.0.0.0/24 is subnetted, 2 subnets
>O 1.1.1.0 [110/58] via 1.1.2.2, 01:53:47, Ethernet0/0
>C 1.1.2.0 is directly connected, Ethernet0/0
> 71.0.0.0/24 is subnetted, 1 subnets
>O 71.71.71.0 [110/59] via 1.1.2.2, 01:53:47, Ethernet0/0
> 81.0.0.0/24 is subnetted, 1 subnets
>O 81.81.81.0 [110/11] via 1.1.2.2, 01:53:47, Ethernet0/0
> 10.0.0.0/24 is subnetted, 3 subnets
>O 10.2.2.0 [110/11] via 1.1.2.2, 01:53:47, Ethernet0/0
>O 10.1.1.0 [110/59] via 1.1.2.2, 01:53:48, Ethernet0/0
>C 10.3.3.0 is directly connected, Loopback0
>
>
>it is there 71.71.71.0 but why it is not snchronised I couldn't
>understood.
>Best Regards
>umit
>
>-----Original Message-----
>From: Brett Rilling [mailto:BRilling@nshorenet.com]
>Sent: Wednesday, July 31, 2002 19:17
>To: '\mit Askan (TK-Network Gvz|mleri)'
>Subject: RE: BGP with OSPF Synch
>
>
>I am not the best at this stuff but here goes ;)
>
>Are you advertising the router id's into the igp? This way IGP knows
>about
>these IP's and should sych them with the BGP. If IGP doesn't know them
>then
>it cant sych the BGP route.
>
>Do a sh ip route... do you see the router ID's? Can you ping them?
>
>
>
>
>
>
>
>-----Original Message-----
>From: \mit Askan (TK-Network Gvz|mleri)
>[mailto:umit.askan@probil.com.tr]
>Sent: Wednesday, July 31, 2002 10:41 AM
>To: Ccie (E-mail)
>Subject: BGP with OSPF Synch
>
>
>Hi,
>
>I have got a problem with OSPF-BGP-Synch. topology looks like :
>
>R1---R2(RR)---R3 all are in AS1, R2 is RR. all nei on loopback IPs,
>10.1.1.1, 10.2.2.2, 10.3.3.3
>BGP router id and OSPF router id are same at the routers. Synch is on.
>after i advertise one block from R1, I can see it on the BGP table of
>R3.
>But when I look the route it is not schronized. Any ideas ?
>
>R1-----------------------------------------------
>router ospf 1
> router-id 10.1.1.1
> log-adjacency-changes
> network 0.0.0.0 255.255.255.255 area 0
>!
>router bgp 1
> synchronization
> bgp router-id 10.1.1.1
> bgp log-neighbor-changes
> network 71.71.71.0 mask 255.255.255.0
> neighbor 10.2.2.2 remote-as 1
> neighbor 10.2.2.2 update-source Loopback0
> no auto-summary
>R2----------------------------------------------------
>router ospf 1
> router-id 10.2.2.2
> log-adjacency-changes
> network 0.0.0.0 255.255.255.255 area 0
>!
>router bgp 1
> bgp router-id 10.2.2.2
> bgp cluster-id 167837954
> bgp log-neighbor-changes
> network 81.81.81.0 mask 255.255.255.0
> neighbor 10.1.1.1 remote-as 1
> neighbor 10.1.1.1 update-source Loopback0
> neighbor 10.1.1.1 route-reflector-client
> neighbor 10.3.3.3 remote-as 1
> neighbor 10.3.3.3 update-source Loopback0
> neighbor 10.3.3.3 route-reflector-client
> no auto-summary
>R3----------------------------------------------------
>router ospf 1
> router-id 10.3.3.3
> log-adjacency-changes
> network 0.0.0.0 255.255.255.255 area 0
>!
>router bgp 1
> bgp log-neighbor-changes
> neighbor 10.2.2.2 remote-as 1
> neighbor 10.2.2.2 update-source Loopback0
> no auto-summary
>
>R3#sh ip bgp
>BGP table version is 2, local router ID is 10.3.3.3
>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
>* i71.71.71.0/24 10.1.1.1 0 100 0 i
>*>i81.81.81.0/24 10.2.2.2 0 100 0 i
>R3#sh ip bgp 71.71.71.0
>BGP routing table entry for 71.71.71.0/24, version 0
>Paths: (1 available, no best path)
> Not advertised to any peer
> Local
> 10.1.1.1 (metric 59) from 10.2.2.2 (10.2.2.2)
> Origin IGP, metric 0, localpref 100, valid, internal, not
>synchronized
> Originator: 10.1.1.1, Cluster list: 10.1.1.2
>R3#sh ip bgp 81.81.81.0
>BGP routing table entry for 81.81.81.0/24, version 2
>Paths: (1 available, best #1, table Default-IP-Routing-Table)
> Not advertised to any peer
> Local
> 10.2.2.2 (metric 11) from 10.2.2.2 (10.2.2.2)
> Origin IGP, metric 0, localpref 100, valid, internal,
>synchronized, best
>
>Best Regards
>
>Umit Askan
>Consulting Network Engineer
>CCNP, CCDP, CCNP-Security, CCNP-Voice Access
>
> > Probil Bilgi Islem Destek ve Danismanlik San. ve Tic. A.S.
>Eski Buyukdere Caddesi Dilaver Sokak No.4
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>
>Tel: +90 (212) 317 61 00 (219)
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