From: Hunt Lee (ciscoforme3@xxxxxxxxxxxx)
Date: Wed Jun 19 2002 - 10:30:29 GMT-3
This might be a simple answer. I have 3 routers:-
RTA --- RTB --- RTC - 205.40.30.131 /26
RTA & RTB - running EBGP
RTB & RTC - running OSPF
The network 205.40.30.131 is the IP of a Loopback interface, and it is
advertised by OSPF's network command.
OSPF is being redistributed into BGP at RTB.
At RTC:-
interface Loopback0
ip address 205.40.30.131 255.255.255.192
router ospf 30
log-adjacency-changes
network 10.0.0.0 0.255.255.255 area 0
network 205.0.0.0 0.255.255.255 area 51
Ok, here is what I'm confused about. At RTB, why is the BGP route for
205.40.30.131 is a /32 (host route??) rather than a /26, or am I missing
something important here??
RouterB#sh ip bgp
BGP table version is 4, local router ID is 172.17.1.1
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
*> 10.1.1.0/30 0.0.0.0 0 32768 ?
*> 198.8.4.128/25 0.0.0.0 10 32768 ?
*> 205.40.30.131/32 10.1.1.2 5 32768 ?
RouterA>sh ip bgp
BGP table version is 4, local router ID is 172.17.1.2
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
*> 10.1.1.0/30 172.17.1.1 0 0 2 ?
*> 198.8.4.128/25 172.17.1.1 10 0 2 ?
*> 205.40.30.131/32 172.17.1.1 5 0 2 ?
RouterA>
Thanks for your help.
H.
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