[c-nsp] even Eompls "vc" is up but can not work

[ying-xiang]

 hi
the vc still is up,but the eompls does't work suddenly.
i got the show message on the cli
 

Local interface: VFI SDH-NEC VFI up

  MPLS VC type is VFI, interworking type is Ethernet

  Destination address: 192.168.4.16, VC ID: 807, VC status: up

    Output interface: Te2/0/0, imposed label stack {185 188}

    Preferred path: not configured

    Default path: active

    Next hop: 192.168.128.14

  Create time: 19w4d, last status change time: 17:31:07

  Signaling protocol: LDP, peer 192.168.4.16:0 up

    Targeted Hello: 192.168.0.1(LDP Id) -> 192.168.4.16

    MPLS VC labels: local 336, remote 188

    Group ID: local 0, remote 0

    MTU: local 1500, remote 1500

    Remote interface description:

  Sequencing: receive disabled, send disabled

  VC statistics:

    packet totals: receive 4016946, send 9576394

    byte totals:   receive 427480129, send 2838427498

    packet drops:  receive 0, send 0

 

sh mpls l2transport vc

VFI SDH-NEC    VFI                        192.168.4.16    807        UP

 

seems it does not have any issue here, except tunnel lable can not be found .what should i do for the further troubleshooting?