LDP over OSPF- tunnel not coming up

[gregwoodson]

Here are the two configs.

The OSPF neighbor relationship shows up. A show interfaces serial1/0/0 detail shows:

bottom-7507#show mpls interfaces s1/1/0 det

Interface Serial1/1/0:

IP labeling enabled (ldp):

Interface config

IGP config

LSP Tunnel labeling not enabled

BGP labeling not enabled

MPLS operational

Optimum Switching Vectors:

IP to MPLS Turbo Vector

MPLS Turbo Vector

Fast Switching Vectors:

IP to MPLS Fast Switching Vector

MPLS Turbo Vector

MTU = 1580

any suggestions?

[shivlu jain]

MP-iBGP is required to foward vrf routes over the service provider cloud. For that you require MP-iBGP. Please configure the given command and run the show ip bgp vpnv4 all summary

Bottom

router bgp 65500

bgp router-id 10.255.0.2

no bgp default ipv4-unicast

neighbor 10.255.0.1 remote-as 65500

neighbor 10.255.0.1 remote-as update-source loopback0

address-family vpnv4

neighbor RR_Routers send-community extended

neighbor 10.255.0.1 activate

neighbor 10.255.0.1 send-community both

address-family ipv4 vrf VRFA

redistribute connected

address-family ipv4 vrf VRFB

redistribute connected

top

router bgp 65500

bgp router-id 10.255.0.1

no bgp default ipv4-unicast

neighbor 10.255.0.2 remote-as 65500

neighbor 10.255.0.2 remote-as update-source loopback0

address-family vpnv4

neighbor RR_Routers send-community extended

neighbor 10.255.0.2 activate

neighbor 10.255.0.2 send-community both

address-family ipv4 vrf VRFA

redistribute connected

address-family ipv4 vrf VRFB

redistribute connected

regards

shivlu jain

[gregwoodson]

If that's the case- then what is the use of the bgp ldp autoconfig? I want to remove BGP as part of the IGP fabric. Isnt this all supposed to be supported over OSPF?

[shivlu jain]

I donot know about that command. But ldp autoconfig for IGP is there which enable mpls on all interfaces automatically.

But you need to configure MP-iBGP for communication end to end.

regards

shivlu jain

[netbeginner]

Hello Greg,

If ping reachability is there between both the router, the please check whether you enable "LDP" on both the routers glocally. If yes and other configs are also OK but still there is no traffic passing even after reachability between routers, then there may also be problem related to IoS of both end PE routers.

[gregwoodson]

I guess this is where Im confused. I am trying to use OSPF LDP Autoconfig to move vrf traffic from router to router and eliminate BGP as an IGP. But Im seeing in the documents that BGP is required on all of the PE's for MP-BGP. What is the optimal way to set this up? Am I going to have to have all of the PE's peer across the network to share this VRF information?

[netbeginner]

Hello Greg,

U can chck with this command "mpls ldp neighbor " to be exectute globally on far end PE, Hope for the best.

[jon.harald.bovre]

Add this BGP configuration to PE:

(replace xxx by proper AS)

bottom router:

router bgp xxx

no bgp default ipv4

nei iBGP peer-group

nei iBGP remote xxx

nei iBGP update loop 0

nei 10.255.0.1 peer iBGP

add vpnv4

nei 10.255.0.1 activate

add ipv4 vrf VRFA

red conn

add ip44 vrf VPNB

red conn

***************************************

top router:

router bgp xxx

no bgp default ipv4

nei iBGP peer-group

nei iBGP remote xxx

nei iBGP update loop 0

nei 10.255.0.2 peer iBGP

add vpnv4

nei 10.255.0.2 activate

add ipv4 vrf VRFA

red conn

add ipv4 vrf VPNB

red conn