show ldp session

Address

Transport address of the session.

State

State of the session: Nonexistent, Connecting, Initialized, OpenRec, OpenSent, Operational, or Closing. The states correspond to the state diagram specified in Internet Draft LDP Specification draft-ietf-mpls-rfc3036bis-01.txt.

Connection

TCP connection state: Closed, Opening, or Open.

Hold time

Time remaining until the session will be closed, in seconds.

Session ID

LDP identifiers of the peers of this session.

Next keepalive

Time until next keepalive is sent, in seconds.

Active

Whether the local router is playing the active role in the session and during session establishment.

Passive

Whether the local router is playing the passive role in the session and during session establishment.

Maximum PDU

Maximum protocol data unit (PDU) size (packet size) for the session.

Hold time

Time remaining until the session will be closed, in seconds. This value corresponds to the one configured using the keepalive-timeout statement configured at the [edit protocols ldp] hierarchy level.

Neighbor count

Number of neighbors that are contributing to the session.

Neighbor types

Category of LDP session: discovered or auto-targeted.

Keepalive interval

Keepalive interval, in seconds.

Connect retry interval

TCP connection retry interval, in seconds.

Local address

Local transport address.

Remote address

Remote transport address.

Up for

Time that this session has been up.

Last down

Time since the session last went down.

Reason

Reason the session went down:

• Aborted graceful restart

• Authentication key was changed

• Bad type length value (TLV)

• Bad protocol data unit (PDU) packets

• Command-line interface (CLI) command

• Connect time expired

• Connection error

• Connection reset

• Error during initialization

• Hold time expired

• No adjacency or all adjacencies down

• Notification received

• Received notification from peer

• Unexpected End of File (EOF)

• Unknown reason

Number of session flaps

Number of times the session changes from up to down.

Restarting

LDP is in the process of gracefully restarting.

Capabilities advertised

LDP capabilities advertised to a peer.

Capabilities received

LDP capabilities received from a peer.

Protection

Information about the status of MPLS LDP session protection.

restart complete in nnn msec

Amount of time (in milliseconds) remaining until graceful restart is declared complete.

Authentication type

Shows the longest match MD5 authentication

Local

Information about graceful restart for the local end of an LDP session. Graceful restart and helper mode are independent.

• Restart—Status of the grateful restart feature at the local end of the LDP session: enabled or disabled.

• Helper mode—Status of the helper mode feature at the local end of the LDP session: enabled or disabled. When this feature is enabled, the local end of the LDP session can help the restarting router with its LDP restart procedures.

• Reconnect time—Amount of time to wait from when a restart is initiated until the router can exchange LDP messages with its neighbors. The default is 60000 msec and is not configurable. (Reconnect timeout refers to "FT Reconnect timeout" in draft-ietf-mpls-ldp-restart-06, Internet Draft Graceful Restart Mechanism for LDP.)

Remote

Information about graceful restart at the remote end of an LDP session. Graceful restart and helper mode are independent.

• Restart—Status of the grateful restart feature at the remote end of the LDP session: enabled or disabled.

• Helper mode—Status of the helper mode feature at the remote end of the LDP session: enabled or disabled. When this feature is enabled, the remote end of the LDP session can help the restarting router with its LDP restart procedures.

• Reconnect time—Amount of time in milliseconds from when a restart is initiated until the remote router can exchange LDP messages with its neighbors.

Local maximum recovery time

Amount of time during which the restarting node attempts to recover its lost states with help from its neighbors (in milliseconds).

Next-hop addresses received

Next-hop addresses received on the session.

Queue depth

Number of messages that are queued for sending to the peers in the group.

Message type

Type of message being sent:

• • Initialization—Session initialization negotiation messages sent by an LSR to an LDP peer when the transport connection is established.

  • Keeaplive—Keepalive timer messages sent by an LSR to an LDP peer to keep the session active when there is no information or PDU exchanged between them.

  • Notification—Notification messages (such as state of the LDP session) or error information (such as bad PDU length) sent by an LSR to an LDP peer.

  • Address—Message sent by an LSR to an LDP peer to advertise interface addresses.

  • Address withdraw—Message sent by an LSR to an LDP peer to withdraw a previously advertised interface address.

  • Label mapping—Message sent by an LSR to an LDP peer to advertise label mapping for a forwarding equivalence class (FEC).

  • Label request—Message sent by an LSR to an LDP peer to request a label mapping for an FEC.

  • Label withdraw— Message sent by an LSR to an LDP peer to withdraw a previously advertised FEC-label mapping.

  • Label release—Message sent by an LSR to an LDP peer to notify the peer that a specific FEC-label mapping has been released.

  • Label abort—Message sent by an LSR to an LDP peer to abort a label request message.

• Total—Messages sent and received during the lifetime of the session.

• Last 5 seconds—Messages sent and received during the current session.