01-05-2009 01:19 PM
Still in the process of modeling the MPLS network that we currently have with one of our Service Providers.
At this point I have placed the same config on the Lab CE's that exist in our production network. I have also followed Cisco Documentation to configure the PE routers, however I cannot get the CE to PE BGP peering.
What am I missing?
***********
*CE Router*
***********
nterface Loopback0
ip address 10.18.0.8 255.255.255.255
!
interface FastEthernet0/0
ip address 68.139.201.30 255.255.255.252
duplex half
!
interface FastEthernet1/0
no ip address
shutdown
duplex half
!
interface FastEthernet1/1
no ip address
shutdown
duplex half
!
interface FastEthernet2/0
no ip address
duplex full
!
router bgp 1
no synchronization
bgp log-neighbor-changes
neighbor 68.139.201.29 remote-as 65000
***********
*PE Router*
***********
ip vrf vpn-mtb
rd 1:100
route-target export 1:100
route-target import 1:100
!
no ip domain lookup
mpls label protocol ldp
tag-switching tdp router-id Loopback0
!
!
!
!
interface Loopback0
ip address 68.2.0.1 255.255.255.252
!
interface FastEthernet0/0
ip address 68.2.1.2 255.255.255.252
duplex auto
speed auto
tag-switching ip
!
interface FastEthernet1/0
ip vrf forwarding vpn-mtb
ip address 68.139.201.29 255.255.255.252
duplex auto
speed auto
!
interface FastEthernet2/0
no ip address
shutdown
duplex auto
speed auto
!
router ospf 1
router-id 68.2.0.1
log-adjacency-changes
network 68.0.0.0 0.255.255.255 area 0
!
router bgp 65000
no synchronization
bgp log-neighbor-changes
redistribute connected
neighbor 68.2.0.3 remote-as 65000
neighbor 68.2.0.3 update-source Loopback0
no auto-summary
!
address-family vpnv4
neighbor 68.2.0.3 activate
neighbor 68.2.0.3 send-community extended
exit-address-family
!
address-family ipv4 vrf vpn-mtb
redistribute connected
neighbor 68.139.201.30 remote-as 1
neighbor 68.139.201.30 activate
neighbor 68.139.201.30 as-override
no auto-summary
no synchronization
exit-address-family
Solved! Go to Solution.
01-05-2009 02:07 PM
Mark,
Re-entering the configuration obviously cleared the duplicate RID issue.
Regards
01-05-2009 01:47 PM
Mark,
The configs look good. Did you try pinging from the PE to the CE and vice versa.
Regards
01-05-2009 01:52 PM
Harold,
No luck. When I do a show ip bgp summary, the address of the CE doesn't even show up as a potential neighbor. What am I not getting?
P.S. Thanks for all your help today.
01-05-2009 01:56 PM
Mark,
On the PE side, You need to use "show ip bgp vpnv4 all summary" rather than the regular "show ip bgp summary". You should be able to use the "show ip bgp summary" to verify the connection on the CE side though.
You are very welcome.
Regards
01-05-2009 02:01 PM
Here are the command outputs:
PE#show ip bgp vpnv4 all summary
BGP router identifier 68.2.0.1, local AS number 65000
BGP table version is 3, main routing table version 3
1 network entries using 137 bytes of memory
1 path entries using 64 bytes of memory
3/1 BGP path/bestpath attribute entries using 348 bytes of memory
1 BGP extended community 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 573 total bytes of memory
BGP activity 3/0 prefixes, 3/0 paths, scan interval 15 secs
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
68.2.0.3 4 65000 0 0 0 0 0 never Active
68.139.201.30 4 1 29 29 0 0 0 never Active
CE#show ip bgp summary
BGP router identifier 68.2.0.1, local AS number 1
BGP table version is 1, main routing table version 1
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd
68.139.201.29 4 65000 4246 4246 0 0 0 never Active
01-05-2009 02:03 PM
Harold,
I just re-entered the bgp configuration on the CE and the neighbor came up.
Thanks.
01-05-2009 02:07 PM
Mark,
Re-entering the configuration obviously cleared the duplicate RID issue.
Regards
01-05-2009 02:05 PM
Mark,
The issue is that the router-id is the same on either side of the connection (68.2.0.1), hence the session not coming up. Change it on either side and it should fix the issue.
Regards
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