BGP Problem !!!

[anurag007]

hello
m just doing simple bgp process and the best route are not showing op

Topology

R0-------->R1 (both f0/0)
Update source are loopbacks R0 loopback 2
R1 loopback 1

----------------------------------------------------------------------------------------------
************************************************** *************************
R0
router bgp 100
no synchronization
bgp log-neighbor-changes
network 2.2.2.0 mask 255.255.255.0
neighbor 1.1.1.1 remote-as 200
neighbor 1.1.1.1 ebgp-multihop 2
neighbor 1.1.1.1 update-source Loopback2
no auto-summary

ip route 1.1.1.0 255.255.255.0 10.0.1.1


interface Loopback2
ip address 2.2.2.2 255.255.255.0
!
interface FastEthernet0/0
ip address 10.0.1.2 255.255.255.0
duplex auto
speed auto

R0#sh ip bgp
BGP table version is 4, local router ID is 2.2.2.2
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 (WHY r?????)
r> 1.1.1.0/24 1.1.1.1 0 0 200 i
*> 2.2.2.0/24 0.0.0.0 0 32768 i

R0#sh ip bgp summary
BGP router identifier 2.2.2.2, local AS number 100
BGP table version is 4, main routing table version 4
2 network entries using 234 bytes of memory
2 path entries using 96 bytes of memory
3/2 BGP path/bestpath attribute entries using 348 bytes of memory
1 BGP AS-PATH entries using 24 bytes of memory
0 BGP route-map cache entries using 0 bytes of memory
0 BGP filter-list cache entries using 0 bytes of memory
BGP using 702 total bytes of memory
BGP activity 4/2 prefixes, 4/2 paths, scan interval 60 secs

Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
1.1.1.1 4 200 17 17 4 0 0 00:07:32 1

************************************************** ******************************************
------------------------------------------------------------------------------------------------------------------
R1
router bgp 200
no synchronization
bgp log-neighbor-changes
network 1.1.1.0 mask 255.255.255.0
neighbor 2.2.2.2 remote-as 100
neighbor 2.2.2.2 ebgp-multihop 2
neighbor 2.2.2.2 update-source Loopback1
no auto-summary

ip route 2.2.2.0 255.255.255.0 10.0.1.2

interface Loopback1
ip address 1.1.1.1 255.255.255.0
!
interface FastEthernet0/0
ip address 10.0.1.1 255.255.255.0
duplex auto
speed auto



R1#sh ip bgp
BGP table version is 4, local router ID is 1.1.1.1
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
*> 1.1.1.0/24 0.0.0.0 0 32768 i
r> 2.2.2.0/24 2.2.2.2 0 0 100 i


R1#sh ip bgp summary
BGP router identifier 1.1.1.1, local AS number 200
BGP table version is 4, main routing table version 4
2 network entries using 234 bytes of memory
2 path entries using 96 bytes of memory
3/2 BGP path/bestpath attribute entries using 348 bytes of memory
1 BGP AS-PATH entries using 24 bytes of memory
0 BGP route-map cache entries using 0 bytes of memory
0 BGP filter-list cache entries using 0 bytes of memory
BGP using 702 total bytes of memory
BGP activity 4/2 prefixes, 4/2 paths, scan interval 60 secs

Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRc
2.2.2.2 4 100 18 18 4 0 0 00:08:14 1
************************************************** *************************************************
-----------------------------------------------------------------------------------------------------------------------


WHat Can be problem with this config ?????

[Big Evil]

The r> means RIB (Routing Information Base) failure (you can see this in the legend you put in, cmd sh ip bgp) You get the r> symbol is when BGP tries to install the bestpath prefix into RIB (for example, the IP Routing table), the RIB rejects the BGP route.

In your case a route with a better AD is present. The static one.

I just put a post for BGP on my blog.

HTH.

[anurag007]

Originally Posted by Big Evil

The r> means RIB (Routing Information Base) failure (you can see this in the legend you put in, cmd sh ip bgp) You get the r> symbol is when BGP tries to install the bestpath prefix into RIB (for example, the IP Routing table), the RIB rejects the BGP route.

In your case a route with a better AD is present. The static one.

I just put a post for BGP on my blog.

HTH.

yeah i read your blog yesterday..and truly only the person who set up BGP lab can understand that BGP LAB is a lot of work !!!!!

Thnx BE ...static router lower AD was the problem .......!!!!!!!!

[Big Evil]

No problem. Please to read you like my blog, i will be posting once/twice a week on BGP. It is so hard to grasp (for me anyhow), i want to add labs that are easy to follow/run.

[anurag007]

Originally Posted by Big Evil

No problem. Please to read you like my blog, i will be posting once/twice a week on BGP. It is so hard to grasp (for me anyhow), i want to add labs that are easy to follow/run.

yeah read all ur blog and its always good to follow and read from expert and get as much knowledge as we can ...
i got notification everytime u put something on ur blog

[Big Evil]

LOL.........easy on the expert.