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# Monitoring MPLS Forwarding Table for VPWS

Purpose

Display information about MPLS labels that are being used for forwarding. The brief keyword displays summary information for the MPLS labels.

Action

To display MPLS forwarding information for a particular label:

    host1#show mpls forwarding label 17
    In label: 17
      Label space: platform label space
      Owner: bgp
      Spoof check: router ERX-pe
      Action:
        MPLS next-hop: 28, l2transport to ATM2/0.100
      Statistics:
        0 in pkts
        0 in Octets
        0 in errors
        0 in discard pkts

To display brief information about MPLS forwarding for all labels:

    host1:pe1# show mpls forwarding brief

    In Label  Owner                              Action
    -------- -------- -------------------------------------------------------------
    17       bgp      l2transport to ATM2/0.100
    18       bgp      l2transport to ATM2/0.12
    26       ldp      lookup on inner header/label
    27       ldp      swap to 39 on ATM2/0.20, nbr 20.20.20.2
    28       ldp      swap to 41 on ATM2/0.20, nbr 20.20.20.2
    29       ldp      lookup on inner header/label
    30       ldp      swap to 43 on ATM2/0.20, nbr 20.20.20.2
    31       ldp      swap to 44 on ATM2/0.20, nbr 20.20.20.2
    46       ldp      swap to 40 on ATM2/0.20, nbr 20.20.20.2
    L2transport

         Interface    Owner                        Action
    --------------- -------- -----------------------------------------
    ATM2/0.12       bgp       swap to 801028, push 39 on ATM2/0.20, nbr 20.20.20.2
    ATM2/0.100      bgp      swap to 801024, push 39 on ATM2/0.20, nbr 20.20.20.2

To display MPLS forwarding information for a particular interface:

    host1:pe#show mpls forwarding interface atm2/0.100
    In label: n/a, ATM2/0.100
      Owner: bgp
      Spoof check: router erx-pe
      Action:
        MPLS next-hop: 27, label 801024, resolved by MPLS next-hop 8
          MPLS next-hop: 8, resolved by MPLS next-hop 9, peer 10.3.2.2
            MPLS next-hop: 9, label 39 on ATM2/0.20, nbr 10.20.20.2
      Statistics: Disabled

Meaning

Table 109 lists the show mpls forwarding command output fields.

Table 109: show mpls forwarding Output Fields

Field Name | Field Description
--- | ---
In label | Label sent to upstream neighbor for route
Out label | Label received from downstream neighbor for route
Label space | Label space in which the label is assigned
Owner | Signaling protocol that placed the label in the forwarding table: BGP, LDP, or RSVP-TE
Spoof check | Type and location of spoof checking performed on the MPLS packet, router, or interface
Action | Action taken for MPLS packets arriving with that label
in pkts | Number of packets sent with the label
in Octets | Number of octets sent with the label
in errors | Number of packets that are dropped for some reason before being sent
in discardPkts | Number of packets that are discarded due to lack of buffer space before being sent
Interface | Layer 2 interface that is a member of an L2VPN

#### Related Topics

- show mpls forwarding

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