05-13-2014 08:54 AM - edited 03-04-2019 10:59 PM
Hello guys,
Today at work something awkward caught my attention.
The situation falls to BGP, when I issue the command sh ip bgp, the output gives me this:
RT52162#sh ip bgp
BGP table version is 56, local router ID is 10.10.0.16
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
* 0.0.0.0 172.**.***161 50 0 15**5 15**5 65010 ?
*> 172.**.***.169 0 15**5 65010 ?
*> 10.**.0.16/32 0.0.0.0 0 32768 ?
*> 10.**.0.0/16 0.0.0.0 0 32768 ?
The bold part of the output it's exactly the same, and this connection runs on ATM.
I can't figure out this issue, so if anyone could explain me why this is happening or how can I troubleshoot it, I have other sites configured the with the same configuration and it gives me the exact same output.
Solved! Go to Solution.
05-13-2014 11:00 AM
Hi,
The neighbor 172.xxx.xxx.161 is doing AS_PATH prepending by prepending its AS number one time when advertising the default route so that is is considered a backup neighbor.
Regards
Alain
05-13-2014 11:00 AM
Hi,
The neighbor 172.xxx.xxx.161 is doing AS_PATH prepending by prepending its AS number one time when advertising the default route so that is is considered a backup neighbor.
Regards
Alain
05-14-2014 12:55 AM
Thanks,
You've just solved a mistery!! :D
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