Monitoring MPLS Labels Used for Forwarding

Purpose

Display information for labels being used for forwarding.

Action

To display information about MPLS labels used for forwarding:

host1:vr2#show mpls forwarding
In label: 28
  Label space: platform label space
  Owner: ldp 
  Spoof check: router pe1
  Action:
    MPLS next-hop: 1, lookup on inner header/label
  Statistics:
    0 in pkts
    0 in Octets
    0 in errors
    0 in discard pkts

To display summary information about MPLS labels used for forwarding:

host1:vr2# show mpls forwarding brief
Platform label space

In Label  Owner                              Action                            
-------- -------- --------------------------------------
28       ldp      lookup on inner header/label                                 
29       ldp      swap to 20 on ATM2/0.10, nbr 10.10.10.2                      
30       ldp      lookup on inner header/label                                 
31       ldp      swap to 22 on ATM2/0.10, nbr 10.10.10.2                      
32       ldp      swap to 23 on ATM2/0.10, nbr 10.10.10.2

Meaning

Table 76 lists the show mpls forwarding command output fields.

Table 76: 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

Monitoring MPLS Labels Used for Forwarding

Purpose

Action

Meaning

Related Documentation