From: Big guy (jenseike@start.no)
Date: Mon Nov 21 2005 - 19:14:42 GMT-3
Thanks.... that solved it... It is increadible what you are not able to see
when you have been on the rack for hours
Thanks again
-----Opprinnelig melding-----
Fra: Peter McCreesh [mailto:petermccreesh@gmail.com]
Sendt: 21. november 2005 23:01
Til: Big guy
Kopi: ccielab@groupstudy.com
Emne: Re: bgp problem
Hi,
Synchronisation is turned on in the R1 bgp config. If it doesn't see a
route to the destination in its IGP routing table, it won't install it in
its BGP table.
Regards,
Pete
On 11/21/05, Big guy <jenseike@start.no> wrote:
Hi ,
Look at this strange thing that is happening to bgp..
The aggregate is coming from r6
R6
router bgp 2
no synchronization
bgp log-neighbor-changes
aggregate-address 198.168.0.0 255.255.224.0 summary-only
neighbor 150.100.2.254 remote-as 100
neighbor 152.1.4.4 remote-as 2
neighbor 152.1.4.4 update-source Loopback0
neighbor 152.1.4.4 next-hop-self
neighbor 152.1.4.4 password CISCO
R4
router bgp 2
no synchronization
bgp router-id 4.4.4.4
bgp log-neighbor-changes
neighbor 152.1.1.1 remote-as 2
neighbor 152.1.1.1 update-source Loopback0
neighbor 152.1.1.1 route-reflector-client
neighbor 152.1.1.1 password CISCO
neighbor 152.1.6.6 remote-as 2
neighbor 152.1.6.6 update-source Loopback0
neighbor 152.1.6.6 route-reflector-client
neighbor 152.1.6.6 password CISCO
neighbor 152.1.5.5 remote-as 2
neighbor 152.1.5.5 update-source Loopback0
neighbor 152.1.5.5 route-reflector-client
neighbor 152.1.5.5 password CISCO
no auto-summary
R5
router bgp 2
no synchronization
bgp router-id 5.5.5.5
bgp log-neighbor-changes
neighbor 152.1.4.4 remote-as 2
neighbor 152.1.4.4 update-source Loopback0
neighbor 152.1.4.4 next-hop-self
neighbor 152.1.4.4 password CISCO
no auto-summary
R1
router bgp 2
synchronization
bgp router-id 1.1.1.1
bgp log-neighbor-changes
neighbor 152.1.4.4 remote-as 2
neighbor 152.1.4.4 update-source Loopback0
neighbor 152.1.4.4 next-hop-self
neighbor 152.1.4.4 password CISCO
no auto-summary
And then look at the bgp table on r1 and r5
Rack1R5#sh ip bg
BGP table version is 40, local router ID is 5.5.5.5
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
*> 152.1.30.2 0 0 1 i
*>i192.168.0.0/19 152.1.6.6 0 100 0 i
Rack1R1#sh ip bg
BGP table version is 4, local router ID is 1.1.1.1
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
* i192.168.0.0/19 152.1.6.6 0 100 0 i
Rack1R1#
Why does not the prefixes (192.168.0.0) show as "best" on r1 as on r5
that
has exact same config as r5...
Have you seen this, or can you understand what is happening here...
There are no acl, filtering or anything from r4
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