From: Venkata Agoram (vsubrama@cisco.com)
Date: Fri Oct 25 2002 - 02:22:12 GMT-3
Hi,
I have following scenario
|------------ R9------------------|
| |
R3-------------R4-----------------R7
R9 is ebgp nei to R3 and R7,and R3 is ibgp nei to R4 sync on with eigrp
running between them.R4 is running ebgp with R7.
200.40.91.0 is attached to R9 and Iam getting it in R3 and R7.R4 selects
the 200.40.91.0 through R7 as it is ebgp route
compared to R3.Now I have adjusted local pref in R3 so that R4 selects R3
route than R7.I have done clear ip bgp *
and verified R4 selecting R3 as path.Now when I clear ip bgp 3.3.3.3 which
is R3 loopback R4 shows R7 as the path
even after R3 nei comes back and R3 path is showing as not
syncronized.Again I have to clear R7 nei to bring back
original condition.
From my understanding whenever bgp nei comes back
the bgp routing table is recalculated and it is
not working.
R4#sh ip bgp
BGP table version is 20, local router ID is 4.4.4.4
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
*>i0.0.0.0 10.1.35.2 0 100 0 20 i
*>i10.0.0.0 1.1.1.1 100 0 i
*>i10.1.23.0/24 2.2.2.2 0 100 0 i
*>i20.0.0.0 10.1.35.2 100 100 0 20 ?
*>i20.1.61.0/24 10.1.35.2 100 0 20 ?
*>i20.1.75.0/24 10.1.35.2 100 0 20 ?
* i30.0.0.0 10.1.35.2 100 0 20 50 40 30 i
*> 7.7.7.7 0 30 i
* i150.50.0.0 10.1.35.2 100 0 20 50 i
*> 7.7.7.7 0 30 40 50 i
* i200.40.91.0 10.1.35.2 200 0 20 50 40 ?
*> 7.7.7.7 0 30 40 ?
R4#sh ip bgp 200.40.91.0
BGP routing table entry for 200.40.91.0/24, version 16
Paths: (2 available, best #2, table Default-IP-Routing-Table)
Advertised to non peer-group peers:
1.1.1.1 2.2.2.2 3.3.3.3
20 50 40, (received & used)
10.1.35.2 (metric 2716160) from 3.3.3.3 (3.3.3.3)
Origin incomplete, localpref 200, valid, internal, not synchronized
30 40, (received & used)
7.7.7.7 from 7.7.7.7 (7.7.7.7)
Origin incomplete, localpref 100, valid, external, best
R4#
venkata agoram
This archive was generated by hypermail 2.1.4 : Tue Nov 05 2002 - 08:35:56 GMT-3