Monitoring LDP Neighbors

Purpose

Display LDP neighbor information.

Action

To display information about LDP neighbor 10.3.5.1:

host1#show ldp neighbor 10.3.5.1
LDP Neighbor: 10.0.2.2
  LSR: Remote 10.0.2.2:0, local 10.0.1.1:0
  Transport address: remote 10.0.2.2, local 10.0.1.1
  State: Operational
  LDP advertisement: Unsolicited
  Up for 00:20:03
  Number of next-hop addresses received = 3
    10.0.2.2  100.6.12.2  100.6.23.2
  Number of adjacencies = 1
    Link Hello adjacency: address 10.6.12.2, transport 10.0.2.2,
      Up for 00:20:09, remaining hold time: 11 sec

To display brief information about all LDP neighbors:

host1#show ldp neighbor brief
Neighbor                 Transport Address   State
10.0.2.2                10.0.1.1->80.0.2.2     Operational

To display information about graceful restart for neighbors:

host1#show ldp neighbor graceful-restart
LDP Neighbor: 10.0.1.1
  Graceful Restart is disabled
  Helper Mode is enabled
  Reconnect Time: 0 msec
  Recovery Time: 0 msec
  State: operational
LDP neighbor 10.0.2.2
  Graceful Restart is enabled
  Helper Mode is enabled
  Reconnect Time: 220000 msec
  Recovery Time: 0 msec
  State: operational

To display information about LDP statistics for the session with each LDP neighbor:

host1#show ldp neighbor statistics
LDP Neighbor: 10.0.2.2
  Message type     Received   Sent
----------------   --------   ----
Initialization            1      1
Keepalive                85     85
Notification              0      0
Address                   1      1
Address withdraw          0      0
Label mapping             5      5
Label request             0      0
Label withdraw            2      2
Label release             2      2

Note: The mpls keyword is optional and is provided for compatibility with non–E Series implementations.

Note: If a password is configured for a peer, you can view the password with the show configuration command. This command displays the passwords in cleartext unless the service password-encryption command has been issued, in which case the passwords are displayed in encrypted format.

Meaning

Table 68 lists the show ldp neighbor command output fields.

Table 68: show ldp neighbor Output Fields

Field Name

Field Description

LDP neighbor

IP address of LDP peer

LSR

IP address of remote and local peers; the number following the colon is the platform label space ID, and is always 0

Transport address

Transport remote and local address for the TCP session

State

State of the session, nonexistent (session connection not established) or operational (has received keepalive message)

LDP advertisement

Mode of label distribution, downstream-unsolicited or downstream-on-demand

Up

Time that the adjacency has been up, in hh:mm:ss format

Graceful Restart

State of graceful restart, enabled or disabled

Helper Mode

State of graceful restart helper mode, enabled or disabled

Reconnect Time

Value for reconnect time received from peer in FT TLV, in milliseconds

Recovery Time

Value for recovery time received from peer in FT TLV, in milliseconds

State

Status of the neighbor’s graceful restart, one of the following:

nonexistent

LDP session is not established

restarting

Neighbor LSR is restarting

recovering

Session with neighbor LSR has reestablished after the neighbor restarted; label bindings are being exchanged

operational

LDP session is up

Neighbor

IP address of LDP peer

Initialization

Number of initialization messages received and sent

Keepalive

Number of keepalive messages received and sent

Notification

Number of notification messages received and sent

Address

Number of address messages received and sent

Address withdraw

Number of address withdraw messages received and sent

Label mapping

Number of label mapping messages received and sent

Label request

Number of label request messages received and sent

Label withdraw

Number of label withdraw messages received and sent

Label release

Number of label release messages received and sent

Related Documentation