Check Your Work

To verify proper operation of Layer 2 circuits, use the following commands:

• show l2circuit connections

• Options: [brief] | [down] | [extensive] | [history] | [instance] | [local-site] | [remote-site] |[status] | [summary] | [up] | [up-down]

• show ldp database
• show route table

The following section shows the output of these commands used with the configuration example:

user@PE1> show l2circuit connections

Layer-2 Circuit Connections:

Legend for connection status (St)

EI -- encapsulation invalid      NP -- interface not present

MM -- mtu mismatch               Dn -- down

EM -- encapsulation mismatch     VC-Dn -- Virtual circuit Down

CM -- control-word mismatch      Up -- operational

OL -- no outgoing label          XX -- unknown

NC -- intf encaps not CCC/TCC

Legend for interface status

Up -- operational

Dn -- down

Neighbor: 10.255.145.130

     Interface                 Type  St     Time last up          # Up trans

     so-0/0/0.0 (vc 1)         rmt   Up     Jan 26 14:13:54 2003           1

       Local interface: so-0/0/0.0, Status: Up, Encapsulation: PPP

       Remote PE: 10.255.145.130, Negotiated control-word: Yes (Null)

       Incoming label: 100000, Outgoing label: 100000

user@PE1> show ldp database l2circuit

Input label database, 10.255.145.126:0--10.255.145.130:0

   Label     Prefix

  100000     L2CKT CtrlWord PPP VC 1

Output label database, 10.255.145.126:0--10.255.145.130:0

   Label     Prefix

  100000     L2CKT CtrlWord PPP VC 1

user@PE1> show ldp database l2circuit detail

Input label database, 10.255.145.126:0--10.255.145.130:0

   Label     Prefix

  100000     L2CKT CtrlWord PPP VC 1

             State: Active

             Age: 5:37

Output label database, 10.255.145.126:0--10.255.145.130:0

   Label     Prefix

  100000     L2CKT CtrlWord PPP VC 1

             State: Active

             Age: 5:37

user@PE1> show route table mpls.0

mpls.0: 7 destinations, 7 routes (7 active, 0 holddown, 0 hidden)

Restart Complete

+ = Active Route, - = Last Active, * = Both

0                  *[MPLS/0] 00:05:04, metric 1

                       Receive

1                  *[MPLS/0] 00:05:04, metric 1

                       Receive

2                  *[MPLS/0] 00:05:04, metric 1

                       Receive

100000             *[L2VPN/7] 00:04:50

                     > via so-0/0/0.0, Pop       Offset: 4

100016             *[LDP/9] 00:04:52, metric 1

                     > via so-0/1/0.0, Pop

100016(S=0)        *[LDP/9] 00:04:52, metric 1

                     > via so-0/1/0.0, Pop

so-0/0/0.0         *[L2VPN/7] 00:04:50

                     > via so-0/1/0.0, Push 100000 Offset: -4