http://s3/mw690/6c098561td587c31bcd12&690- LDP-OSPF同步（mpls ldp sync）" TITLE="MPLS - LDP-OSPF同步（mpls ldp sync）" />

R1:

router ospf 1
 mpls ldp sync

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R1#sh ip ospf mpls ldp int f0/0
FastEthernet0/0
  Process ID 1, Area 0
  LDP is configured through LDP autoconfig
  LDP-IGP Synchronization : Required
  Holddown timer is not configured
  Interface is up

R1#sh ip route 4.4.4.4
Routing entry for 4.4.4.4/32
  Known via "ospf 1", distance 110, metric 3, type intra area
  Last update from 13.1.1.3 on FastEthernet0/0, 00:03:02 ago
  Routing Descriptor Blocks:
  * 13.1.1.3, from 4.4.4.4, 00:03:02 ago, via FastEthernet0/0
      Route metric is 3, traffic share count is 1

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R3(config)#int f0/0

R3(config-if)#no  mpls ip
*Mar  1 00:40:18.215: %LDP-5-NBRCHG: LDP Neighbor 1.1.1.1:0 (2) is DOWN (LDP disabled on interface)

R1#sh ip ospf mpls ldp int f0/0
FastEthernet0/0
  Process ID 1, Area 0
  LDP is configured through LDP autoconfig
  LDP-IGP Synchronization : Required
  Holddown timer is not configured
  Interface is up and sending maximum metric   <-----------------------

R1#sh ip route 4.4.4.4        
Routing entry for 4.4.4.4/32
  Known via "ospf 1", distance 110, metric 129, type intra area
  Last update from 12.1.1.2 on Serial1/0, 00:01:16 ago
  Routing Descriptor Blocks:
  * 12.1.1.2, from 4.4.4.4, 00:01:16 ago, via Serial1/0
      Route metric is 129, traffic share count is 1

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R2(config-router)#int s0/0
R2(config-if)#shutdown

R1#sh ip route 4.4.4.4
Routing entry for 4.4.4.4/32
  Known via "ospf 1", distance 110, metric 65537, type intra area
  Last update from 13.1.1.3 on FastEthernet0/0, 00:00:41 ago
  Routing Descriptor Blocks:
  * 13.1.1.3, from 4.4.4.4, 00:00:41 ago, via FastEthernet0/0
      Route metric is 65537, traffic share count is 1