Hi, I am trying to configure a simple MPLS config. However, I am have trouble getting the LDP adjacency to come up. I have to two routers configured as showing below. The issue is I advertise Fa0/0 and Loopback0 on both routers via OSPF. Then I enable MPLS on the Fastethernet interfaces. However, after waiting for about 3 minutes the adjacency does not come up. The only way the adjacency is establish ed is if I advertise the Loopback1 into OSPF on both routers. Why can't I establish adjacency via the Loopback0.
Thank you R1 Fa0/0 -------OSPF------- R2 Fa0/0 | | Loopback0 - OSPF Loopback0 - OSPF Loopback1 Loopback1 Below is the config for both routers. R1 Config ip cef ! ! ! ! ! mpls label protocol ldp ! ! interface Loopback0 ip address 1.1.1.1 255.255.255.0 ip ospf network point-to-point ! interface Loopback1 ip address 11.1.1.1 255.255.255.0 ! interface FastEthernet0/0 ip address 10.1.12.1 255.255.255.0 duplex auto speed auto mpls ip ! ! router ospf 1 log-adjacency-changes network 1.1.1.1 0.0.0.0 area 0 network 10.1.12.1 0.0.0.0 area 0 network 11.1.1.1 0.0.0.0 area 0 R2 Config ip cef ! ! ! ! ! mpls label protocol ldp ! ! ! interface Loopback0 ip address 2.2.2.2 255.255.255.0 ip ospf network point-to-point ! interface Loopback1 ip address 22.2.2.2 255.255.255.0 ! interface FastEthernet0/0 ip address 10.1.12.2 255.255.255.0 duplex auto speed auto mpls ip ! ! ! router ospf 1 log-adjacency-changes network 2.2.2.2 0.0.0.0 area 0 network 10.1.12.2 0.0.0.0 area 0 network 10.1.23.2 0.0.0.0 area 0
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