Hi Jason,
sh ip bgp neighbors 1.2.3.4 ?
advertised-routes Display the routes advertised to a BGP neighbor
the adv shows the routes you advertise to your neighbor. You are looking
for "received-routes Display the received routes from neighbor".
/Ralph Olsen
Lab date 1 week away.
Ok maybe I’m missing something, having a brain fart or just plain
don’t know what I’m looking at but I’m getting some ‘unexpected’
output from R7 in Lab 22 when I do a ‘sho ip bgp’. I’ve pasted the
output below.
If I do a ‘sho ip bgp nei /neighbor/ adv’ (I believe) I should see all
routes advertised to me from that neighbor, right? And if that
neighbor is an eBGP peer all the ‘next hop’ information should be the
neighbor’s address, right?
I found this because if I go in and shut R5’s Ethernet interface I
still have routes with a next hop of 110.99.50.5 (sorry I guess you’d
have to be familiar with the lab to answer the question)
I have the config at the time of this output saved for all routers so
if you need to see something I can paste it in.
Any help or clarification would be greatly appreciated.
R7(config)# do sho ip bgp
BGP table version is 26, local router ID is 110.90.7.7
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
* 110.90.1.1/32 110.99.50.5 0 112 111 i
*> 110.99.50.5 0 112 111 i
* 110.90.2.2/32 110.99.50.6 0 112 i
*> 110.99.50.5 0 112 i
* 110.90.4.4/32 110.99.50.6 0 112 i
*> 110.99.50.5 0 112 i
* 110.90.5.5/32 110.99.50.5 0 112 i
*> 110.99.50.5 0 0 112 i
* 110.90.6.6/32 110.99.50.6 0 0 112 i
*> 110.99.50.6 0 112 i
*> 110.90.7.7/32 0.0.0.0 0 32768 i
r>i110.90.8.8/32 110.90.8.8 0 100 0 i
* 110.99.1.0/27 110.99.50.6 0 112 i
*> 110.99.50.5 0 112 i
* 110.99.1.32/27 110.99.50.5 0 112 i
*> 110.99.50.5 0 0 112 i
* 110.99.1.64/27 110.99.50.6 0 0 112 i
Network Next Hop Metric LocPrf Weight Path
*> 110.99.50.6 0 112 i
r>i110.99.4.0/24 110.90.8.8 0 100 0 i
* 110.99.12.0/24 110.99.50.5 0 112 111 i
*> 110.99.50.5 0 112 111 i
* 110.99.25.0/26 110.99.50.5 0 112 i
*> 110.99.50.5 0 0 112 i
* 110.99.40.0/24 110.99.50.6 0 112 i
*> 110.99.50.5 0 112 i
*> 110.99.50.0/24 0.0.0.0 0 32768 i
* 110.99.50.6 0 0 112 i
* 110.99.50.5 0 0 112 i
* 110.99.69.0/30 110.99.50.6 0 0 112 i
*> 110.99.50.6 0 112 i
*> 110.99.78.0/24 0.0.0.0 0 32768 i
* i 110.90.8.8 0 100 0 i
* 150.50.200.0/24 110.99.50.5 0 112 111 i
*> 110.99.50.5 0 112 111 i
* 172.16.4.0/24 110.99.50.5 0 112 111 i
*> 110.99.50.5 0 112 111 i
R7(config)#do sho ip bgp nei 110.99.50.6 adv
BGP table version is 26, local router ID is 110.90.7.7
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
*> 110.90.1.1/32 110.99.50.5 0 112 111 i
*> 110.90.2.2/32 110.99.50.5 0 112 i
*> 110.90.4.4/32 110.99.50.5 0 112 i
*> 110.90.5.5/32 110.99.50.5 0 0 112 i
*> 110.90.6.6/32 110.99.50.6 0 112 i
*> 110.90.7.7/32 0.0.0.0 0 32768 i
r>i110.90.8.8/32 110.90.8.8 0 100 0 i
*> 110.99.1.0/27 110.99.50.5 0 112 i
*> 110.99.1.32/27 110.99.50.5 0 0 112 i
*> 110.99.1.64/27 110.99.50.6 0 112 i
r>i110.99.4.0/24 110.90.8.8 0 100 0 i
*> 110.99.12.0/24 110.99.50.5 0 112 111 i
*> 110.99.25.0/26 110.99.50.5 0 0 112 i
*> 110.99.40.0/24 110.99.50.5 0 112 i
*> 110.99.50.0/24 0.0.0.0 0 32768 i
*> 110.99.69.0/30 110.99.50.6 0 112 i
*> 110.99.78.0/24 0.0.0.0 0 32768 i
Network Next Hop Metric LocPrf Weight Path
*> 150.50.200.0/24 110.99.50.5 0 112 111 i
*> 172.16.4.0/24 110.99.50.5 0 112 111 i
Total number of prefixes 19
R7(config)#do sho ip bgp nei 110.99.50.5 adv
BGP table version is 26, local router ID is 110.90.7.7
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
*> 110.90.1.1/32 110.99.50.5 0 112 111 i
*> 110.90.2.2/32 110.99.50.5 0 112 i
*> 110.90.4.4/32 110.99.50.5 0 112 i
*> 110.90.5.5/32 110.99.50.5 0 0 112 i
*> 110.90.6.6/32 110.99.50.6 0 112 i
*> 110.90.7.7/32 0.0.0.0 0 32768 i
r>i110.90.8.8/32 110.90.8.8 0 100 0 i
*> 110.99.1.0/27 110.99.50.5 0 112 i
*> 110.99.1.32/27 110.99.50.5 0 0 112 i
*> 110.99.1.64/27 110.99.50.6 0 112 i
r>i110.99.4.0/24 110.90.8.8 0 100 0 i
*> 110.99.12.0/24 110.99.50.5 0 112 111 i
*> 110.99.25.0/26 110.99.50.5 0 0 112 i
*> 110.99.40.0/24 110.99.50.5 0 112 i
*> 110.99.50.0/24 0.0.0.0 0 32768 i
*> 110.99.69.0/30 110.99.50.6 0 112 i
*> 110.99.78.0/24 0.0.0.0 0 32768 i
Network Next Hop Metric LocPrf Weight Path
*> 150.50.200.0/24 110.99.50.5 0 112 111 i
*> 172.16.4.0/24 110.99.50.5 0 112 111 i
Total number of prefixes 19
*Jason Morris*
