From: Janto Cin (jantocin@datacomm.co.id)
Date: Thu Jan 02 2003 - 01:30:28 GMT-3
Tim,
I've tried with RIPv2 and it didn't work also.
Any idea? Bgp backdoor or anything else?
TIA.
Janto
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Ouellette, Tim
Sent: Tuesday, December 31, 2002 5:58 PM
To: 'Janto Cin'
Cc: 'ccielab@groupstudy.com'
Subject: RE: BGP and RIP route
The problem is that R8 is advertising the 10.0.0.0/8 with an AD of 80
(due to you changing the AD of RIP) and it's being autosummarized to
that because your running RIPv1 and advertisng a different classfull
network over the 192.168.10.0/30 network. Also, your "no auto-summary"
won't do too much for you with RIPv1.
Your then advertising the 10.0.0.0/8 via BGP due to your "network
10.0.0.0" statement in BGP. BGP has an AD of 20, your RIP has a AD of
80 and therefor they're fighting for position in your routing table and
therefor stepping on eachother (so to speak)
Tim
-----Original Message-----
From: Janto Cin [mailto:jantocin@datacomm.co.id]
Sent: Tuesday, December 31, 2002 12:06 AM
To: ccielab@groupstudy.com
Subject: BGP and RIP route
Hi All,
Need your help on below problem.
Thanks in advance.
(s0)R5(e0)-------(e0)R7(s0)--------(s0)R8(e0)
R5 (s0): 150.50.100.5/24
R5 (e0): 150.50.201.5/24
R7 (e0): 150.50.201.7/24
R7 (s0): 192.168.10.1/30
R8 (s0): 192.168.10.2/30
R8 (e0): 10.1.100.8/8
R5
-------
router ospf 1
router-id 150.50.5.5
network 150.50.5.5 0.0.0.0 area 0
network 150.50.100.0 0.0.0.255 area 1
network 150.50.201.0 0.0.0.255 area 0
router bgp 65522
no synchronization
bgp log-neighbor-changes
bgp confederation identifier 8888
bgp confederation peers 65511 65533
neighbor 150.50.7.7 remote-as 65533
neighbor 150.50.7.7 ebgp-multihop 255
neighbor 150.50.7.7 update-source Loopback0
neighbor 150.50.100.2 remote-as 65522
no auto-summary
R7
--------
router ospf 1
router-id 150.50.7.7
redistribute rip metric-type 1 subnets
network 150.50.7.7 0.0.0.0 area 0
network 150.50.201.0 0.0.0.255 area 0
distribute-list 11 out rip
!
router rip
redistribute ospf 1 metric 5
passive-interface default
no passive-interface Serial0
network 192.168.10.0
distance 80
no auto-summary
!
router bgp 65533
no synchronization
bgp log-neighbor-changes
bgp confederation identifier 8888
bgp confederation peers 65511 65522
neighbor 150.50.5.5 remote-as 65522
neighbor 150.50.5.5 ebgp-multihop 255
neighbor 150.50.5.5 update-source Loopback0
neighbor 192.168.10.2 remote-as 800
no auto-summary
access-list 11 deny 11.0.0.0 0.0.0.255
access-list 11 permit any
R8
-------
router rip
network 10.0.0.0
network 11.0.0.0
network 150.50.0.0
network 192.168.10.0
distance 80
no auto-summary
!
router bgp 800
no synchronization
bgp log-neighbor-changes
network 10.0.0.0
neighbor 192.168.10.1 remote-as 8888
neighbor 192.168.10.1 filter-list 1 in
no auto-summary
ip as-path access-list 1 deny _1000_
ip as-path access-list 1 permit .*]
Problem
-------------
I reload all router then turn on 'debug ip routing'.
R7#sh ip ro
R 10.0.0.0/8 [80/1] via 192.168.10.2, 00:00:19, Serial0
00:04:04: %BGP-5-ADJCHANGE: neighbor 192.168.10.2 Up
R7#
00:04:31: RT: closer admin distance for 10.0.0.0, flushing 1 routes
00:04:31: RT: add 10.0.0.0/8 via 192.168.10.2, bgp metric [20/0]
R7#sh ip ro
B 10.0.0.0/8 [20/0] via 192.168.10.2, 00:00:12
R7#
00:07:32: RT: delete route to 10.0.0.0 via 192.168.10.2, rip metric
[20/0]
00:07:32: RT: no routes to 10.0.0.0, entering holddown
R7#sh ip ro
B 10.0.0.0/8 is possibly down, routing via 192.168.10.2
R7#sh ip ro 10.0.0.0
Routing entry for 10.0.0.0/8
Known via "bgp 65533", distance 20, metric 4294967295 (inaccessible)
Tag 800, type external
Last update from 192.168.10.2 00:05:34 ago
Hold down timer expires in 30 secs
Why route 10.0.0.0/8 entering hold down?
How to solve this problem?
Thank you.
Kind Regards,
Janto
.
.
This archive was generated by hypermail 2.1.4 : Sat Feb 01 2003 - 07:33:38 GMT-3