From: Alex Paulino (Alex@xxxxxxxxx)
Date: Tue Apr 23 2002 - 13:19:49 GMT-3
Hi folks, sorry about this simple doubt, but, i just wanna some tips about ibgp
over synchronization environment.
R8 peer with R2 and receives: 200.2.2.0/24 from AS 2.
R7 peering R8 using synchronzation (AS87). R7 receives this route and place it
as valid route because in the
R8 i have redistributed BGP command under ospf process.
As ospf has Administrative distance equal 110, and iBGP equal 200, this route n
ever comes up from BGP in R7, if i put this route with administrative route > 2
00 in OSPF process, bgp cannot to put this route in your routing table.
I have tried to configure R7 to set distance to this route to 220 under osp pro
cess. After to do this, the R7 has the follow entry in osp table:
R7#sh ip route 200.2.2.0
Routing entry for 200.2.2.0/24
Known via "ospf 10", distance 220, metric 49
...
!
Note that the route now has the distance 220 and this routestill is over ospf a
nd it is not valid from BGP table:
R7#sh ip bgp
BGP table version is 42, local router ID is 200.87.87.1
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
* i200.2.2.0 138.1.8.8 0 100 0 2 i
*> 200.87.87.0 0.0.0.0 0 32768 i
Does exist some solution for to R7 places this route into bgp table or this ne
ver will happen? Which does i must to care in this situation?
thanks in advance.
alex
Follow my configuration...
R8)
router ospf 10
redistribute bgp 87 subnets
network 138.1.0.0 0.0.255.255 area 0
!
router bgp 87
neighbor 138.1.2.2 remote-as 2
neighbor 138.1.2.2 ebgp-multihop 15
neighbor 138.1.2.2 update-source Loopback0
neighbor 138.1.2.2 soft-reconfiguration inbound
neighbor 138.1.7.7 remote-as 87
neighbor 138.1.7.7 update-source Loopback0
neighbor 138.1.7.7 next-hop-self
neighbor 138.1.7.7 soft-reconfiguration inbound
!
R7)
router ospf 10
redistribute bgp 87 subnets
network 138.1.0.0 0.0.255.255 area 0
!
router bgp 87
neighbor 138.1.8.8 remote-as 87
neighbor 138.1.8.8 update-source Loopback0
neighbor 138.1.8.8 next-hop-self
neighbor 138.1.8.8 soft-reconfiguration inbound
!
Follow the shows without change the Administrative distance to 220 in R7 to 200
.2.2.0 route:
R7#sh ip bgp
BGP table version is 67, local router ID is 200.87.87.1
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
*>i200.2.2.0 138.1.8.8 0 100 0 2 i
*> 200.87.87.0 0.0.0.0 0 32768 i
!
R7#sh ip route 200.2.2.0
Routing entry for 200.2.2.0/24
Known via "ospf 10", distance 110, metric 1
Tag 2, type extern 2, forward metric 48
Redistributing via ospf 10
Last update from 138.1.123.8 on Serial0/0.1, 00:16:12 ago
Routing Descriptor Blocks:
* 138.1.123.8, from 138.1.8.8, 00:16:12 ago, via Serial0/0.1
Route metric is 1, traffic share count is 1
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:58:17 GMT-3