From: James MacDonald (j4m3sm63@yahoo.ca)
Date: Thu Nov 27 2008 - 01:46:14 ARST
All, this is hopefully a fairly easy question to get an answer to. I'm doing a bgp lab (iewb-rs-vol1.v4.10.BGP) and have a task to do an unsuppress-map after aggregating some /16's that R3 is advertising and another router in the AS is advertising to a /14. The task asks that i summarize the routes then unsuppress the 10.3.0.0/16 route specifically towards R5. I have done this task now on dynamips ... then rented a rack and tried it ... then dynamips again and it's not working. There must be something I'm missing here. For some reason when i implement the unsuppress-map it unsuppresses both the 10.3/16 and 10.2/16 which is contrary to my configuration and the requirements of the task. If i take the unsuppress-map off to test then it only sends the aggregate as per the aggregate command with "summary-only" should.
I have verified my solution is identical to the workbook solution ... the only difference is prefix/map names and that the workbook results actually show this working fine (for them) but our configs are the same and mine is not working. Can anyone see something in this that i am missing???
Thanks,
==============================
R3 configuration
==============================
!
router bgp 2
no synchronization
bgp log-neighbor-changes
network 10.2.0.0 mask 255.255.0.0
network 10.3.0.0 mask 255.255.0.0
aggregate-address 10.0.0.0 255.252.0.0 summary-only
neighbor 155.13.0.5 remote-as 1
neighbor 155.13.0.5 unsuppress-map unsuppress_route
neighbor 155.13.13.1 remote-as 2
neighbor 155.13.13.1 next-hop-self
no auto-summary
!
ip prefix-list unsuppress_route seq 5 permit 10.3.0.0/16
!
route-map unsuppress_route permit 10
match ip address unsuppress_route
!
==============================
R3 advertised routes to R5
==============================
R3#sh ip bgp nei 155.13.0.5 advertised-routes
BGP table version is 9, local router ID is 10.3.0.1
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
*> 10.0.0.0/14 0.0.0.0 32768 i
s> 10.2.0.0/16 0.0.0.0 0 32768 i <-------- this should not be here!
s> 10.3.0.0/16 0.0.0.0 0 32768 i
Total number of prefixes 3
==============================
R5 routes being received from R3
==============================
R5#sh ip bgp nei 155.13.0.3 received-routes
BGP table version is 8, local router ID is 155.13.45.5
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
*> 10.0.0.0/14 155.13.0.3 0 0 2 i
*> 10.2.0.0/16 155.13.0.3 0 0 2 i <-------- this should not be here!
*> 10.3.0.0/16 155.13.0.3 0 0 2 i
Total number of prefixes 3
------------------------------
Jim MacDonald
j4m3sm63@yahoo.ca
------------------------------
__________________________________________________________________
Yahoo! Canada Toolbar: Search from anywhere on the web, and bookmark your favourite sites. Download it now at
http://ca.toolbar.yahoo.com.
Blogs and organic groups at http://www.ccie.net
This archive was generated by hypermail 2.1.4 : Mon Dec 01 2008 - 08:18:32 ARST