Cisco WS-SUP32-GE-3B - Supervisor Engine 32 Software Configuration Manual page 324

Any Transport over MPLS
To make sure that the PE router endpoints have discovered each other, enter the show mpls ldp
•
discovery command. When an PE router receives an LDP Hello message from another PE router, it
considers that router and the specified label space to be "discovered."
Router# show mpls ldp discovery
To make sure that the label distribution session has been established, enter the show mpls ldp
•
neighbor command. The third line of the output shows that the state of the LDP session is
operational and shows that messages are being sent and received.
Router# show mpls ldp neighbor
• To ensure that the label forwarding table is built correctly, enter the show mpls forwarding-table
command to verify that a label has been learned for the remote PE and that the label is going from
the correct interface to the correct next-hop.
Router# show mpls forwarding-table
Local
tag
16
20
21
24
25
26
Router#
The output shows the following data:
Catalyst Supervisor Engine 32 PISA Cisco IOS Software Configuration Guide, Release 12.2ZY
21-18
Local LDP Identifier:
13.13.13.13:0
Discovery Sources:
Interfaces:
GE-WAN3/3 (ldp): xmit/recv
LDP Id: 12.12.12.12:0
Targeted Hellos:
13.13.13.13 -> 11.11.11.11 (ldp): active/passive, xmit/recv
LDP Id: 11.11.11.11:0
Peer LDP Ident: 12.12.12.12:0; Local LDP Ident 13.13.13.13:0
TCP connection: 12.12.12.12.646 - 13.13.13.13.11010
State: Oper; Msgs sent/rcvd: 1649/1640; Downstream
Up time: 23:42:45
LDP discovery sources:
GE-WAN3/3, Src IP addr: 34.0.0.2
Addresses bound to peer LDP Ident:
23.2.1.14
99.0.0.1
Peer LDP Ident: 11.11.11.11:0; Local LDP Ident 13.13.13.13:0
TCP connection: 11.11.11.11.646 - 13.13.13.13.11013
State: Oper; Msgs sent/rcvd: 1650/1653; Downstream
Up time: 23:42:29
LDP discovery sources:
Targeted Hello 13.13.13.13 -> 11.11.11.11, active, passive
Addresses bound to peer LDP Ident:
11.11.11.11
Outgoing Prefix
tag or VC or Tunnel Id
Untagged 223.255.254.254/32
Untagged l2ckt(2)
Untagged l2ckt(3)
Pop tag 37.0.0.0/8
17 11.11.11.11/32
Pop tag 12.12.12.12/32
– Local tag—Label assigned by this router.
– Outgoing tag or VC—Label assigned by next hop.
– Prefix or Tunnel Id—Address or tunnel to which packets with this label are going.
Bytes tag switched— Number of bytes switched out with this incoming label.
–
Outgoing interface—Interface through which packets with this label are sent.
–
Chapter 21
37.0.0.2 12.12.12.12
37.0.0.1 23.2.1.13
Bytes tag
switched
\
0 Gi2/1
133093 Vl2
185497 Vl3
0 GE3/3
0 GE3/3
0 GE3/3
Configuring Multiprotocol Label Switching
34.0.0.2
Outgoing Next Hop
interface
23.2.0.1
point2point
point2point
34.0.0.2
34.0.0.2
34.0.0.2
OL-11439-03