From: Michael Zuo (mzuo@ixiacom.com)
Date: Sat Feb 24 2007 - 23:49:17 ART
hi Group,
ran into a strange problem:
R4----R1----R2
R1: synchronization on
R2: synchronization on
R4: synchronization off
for some reason R1 advertises network 10.10.10.0 to R2 even it has no
IGP protocol running!! must be something simple but my brian is full and
couldn't figure it out...
anyone out there has an idea? thanks a lot...
R1:
shutdown
serial restart-delay 0
no dce-terminal-timing-enable
!
interface Serial1/3
no ip address
shutdown
serial restart-delay 0
no dce-terminal-timing-enable
!
router bgp 100
synchronization
bgp log-neighbor-changes
neighbor 150.1.12.2 remote-as 300
neighbor 150.1.14.4 remote-as 200
no auto-summary
!
no ip http server
ip classless
Rack1R1(config-router)#do sh ip bg
BGP table version is 2, local router ID is 150.1.14.1
Status codes: s suppressed, d damped, h history, * valid, > best, i -
internal,
r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 10.10.10.0/24 150.1.14.4 0 0 200 ?
Rack1R1(config-router)#do sh ip bg 10.10.10.0
BGP routing table entry for 10.10.10.0/24, version 2
Paths: (1 available, best #1, table Default-IP-Routing-Table)
Advertised to update-groups:
2
200
150.1.14.4 from 150.1.14.4 (10.10.10.1)
Origin incomplete, metric 0, localpref 100, valid, external, best
Rack1R1(config-router)#
Rack1R1(config-router)#do sh ip bg nei 150.1.12.2 ad
BGP table version is 2, local router ID is 150.1.14.1
Status codes: s suppressed, d damped, h history, * valid, > best, i -
internal,
r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 10.10.10.0/24 150.1.14.4 0 0 200 ?
Total number of prefixes 1
Rack1R1(config-router)#
R2:
!
interface Serial1/3
no ip address
shutdown
serial restart-delay 0
no dce-terminal-timing-enable
!
router bgp 300
synchronization
bgp log-neighbor-changes
neighbor 150.1.12.1 remote-as 100
no auto-summary
!
no ip http server
ip classless
!
!
Rack1R2(config)#do sh ip bg
BGP table version is 4, local router ID is 150.1.23.2
Status codes: s suppressed, d damped, h history, * valid, > best, i -
internal,
r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 10.10.10.0/24 150.1.12.1 0 100 200 ?
Rack1R2(config)#do sh ip bg 10.10.10.0
BGP routing table entry for 10.10.10.0/24, version 4
Paths: (1 available, best #1, table Default-IP-Routing-Table)
Not advertised to any peer
100 200
150.1.12.1 from 150.1.12.1 (150.1.14.1)
Origin incomplete, localpref 100, valid, external, best
Rack1R2(config)#
This archive was generated by hypermail 2.1.4 : Thu Mar 01 2007 - 07:38:48 ART