09-05-2008 05:25 PM - edited 03-03-2019 11:26 PM
RouterJ and RouterH are connected on a b2b PPP link, 215.0.0.18/30 (J) and .17(30)H. H is connected to an up-and-running TokenRing segement, 10.4.4.0/24. H's BGP config looks like this:
router bgp 50
bgp log-neighbor-changes
network 10.4.4.0
neighbor 215.0.0.18 remote-as 100
but its table contains only the 4 loopbacks being advertised to it by J
RouterH#sh ip bgp
BGP table version is 49, local router ID is 215.0.0.17
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
*> 205.1.12.0 215.0.0.18 0 0 100 i
*> 205.1.13.0 215.0.0.18 0 0 100 i
*> 205.1.14.0 215.0.0.18 0 0 100 i
*> 205.1.15.0 215.0.0.18 0 0 100 i
RouterH#
going over to Router J, we have a BGP config of:
router bgp 100
network 205.1.12.0
network 205.1.13.0
network 205.1.14.0
network 205.1.15.0
neighbor 215.0.0.17 remote-as 50
!
and a bgp table of:
RouterJ#sh ip bgp
BGP table version is 5, local router ID is 205.1.15.1
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
*> 205.1.12.0 0.0.0.0 0 32768 i
*> 205.1.13.0 0.0.0.0 0 32768 i
*> 205.1.14.0 0.0.0.0 0 32768 i
*> 205.1.15.0 0.0.0.0 0 32768 i
RouterJ#
The 10.4.4.0/24 network was declared on H's BGP process and the segment is up and running, so why is it not being advertised over to J?
09-05-2008 05:50 PM
Dear sir,
Could you told me if summarization enabled or not under BGP process on router H.
09-05-2008 06:04 PM
Make sure to have auto-summary disabled under BGP and also have this command instead,
network 10.4.4.0 mask 255.255.255.0
HTH,
__
Edison.
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