Monitoring RSVP-TE Hello Adjacency Instances

Purpose

Display summary or detailed information about RSVP-TE hello adjacency instances.

Action

To display summary information about RSVP-TE hello adjacency instances:

host1#show mpls rsvp hello instance
  Up – neighbor is up
  GR – graceful restart is in progress                     
  Peer
Address    Interface   Interval   Miss Limit  State
--------   ---------   --------   ----------  ------
10.1.1.2   ATM6/1.1    10000      4           Up
10.3.1.2   ATM6/0.3    10000      4           GR

The following output shows that the two peers are identified as RSVP-TE node hellos peers:

host1#show mpls rsvp hello instance
  Up – neighbor is up
  GR – graceful restart is in progress                     
  Peer
Address Interface Interval Miss Limit State
-------- --------- -------- ---------- ------
10.1.1.2 <any>    10000     4          Up
10.3.1.2 <any>    10000     4          GR
11.2.3.1 Atm3/1.3 10000     4          GR

To display detailed information about RSVP-TE hello adjacency instances:

host1#show mpls rsvp hello instance detail
Neighbor 10.1.1.2 on interface ATM6/1.1
  Local Address 10.1.1.1
  Restart Time: 60000 msecs
  Recovery Time: 120000 msecs
  State: Up
  SrcInstance 0x4379F084
  DstInstance 0x4379EA19
  Interval            : 10000
  Miss Limit          : 4
  Hellos Sent         : 0
  Hellos Received     : 382
  Hellos Suppressed   : 381
  Hello Acks Sent     : 382
  Hello Acks Received : 0

Meaning

Table 87 lists the show mpls rsvp hello instance command output fields.

Table 87: show mpls rsvp hello instance Output Fields

Field Name

Field Description

Peer Address

Address of the peer in the RSVP-TE hello adjacency

Interface

Specifier and status of each interface

any

Identifies an RSVP-TE node hello peer

Interval

Interval at which hellos are sent to the neighbor, in milliseconds

Miss Limit

Number of hello messages from the neighbor that can be missed before the adjacency is considered to be down

State

State of the adjacency with the neighbor

AdjLost

Adjacency has been lost. Hellos were received from the peer but have timed out. The peer is known to be capable of graceful restart, so the router is waiting for hellos to resume from the peer. The router is actively sending hellos to the peer.

The router declares the peer to be dead if it does not receive hellos from the peer during the peer’s advertised recovery period.

The router declares the peer to be gracefully restarting if hellos are seen from the peer and its sequence number has changed.

The router declares the peer to be up if hellos are seen from the peer and its sequence number has not changed.

Dead

Hellos were received from the peer but have timed out. The router is not in graceful restart helper mode. The router changes the local hello sequence number and does not send hellos to the peer. The router transitions to Down if new control traffic needs to be sent to the peer or if the peer starts sending control traffic.

Down

No hellos have been received from the peer. The router is actively sending hellos to the peer.

GR

Graceful restart in progress. The hello sequence number from the peer changed. The router is in graceful restart helper mode and actively sending hellos to the peer.

Up

Hellos were received from the peer. The router is actively sending hellos to the peer.

Neighbor

IP address of remote hello adjacency peer

Local Address

IP address of the local hello adjacency peer

Restart Time

Graceful restart time, in milliseconds

Recovery Time

Graceful restart recovery time, in milliseconds

SrcInstance

Nonzero 32-bit value that represents the sender's hello instance. The value is maintained on a per-neighbor basis. This instance value changes only when the sending peer resets, when the sender’s router reboots, or when communication is lost between the hello adjacency peers.

DstInstance

32-bit SrcInstance value most recently received from hello adjacency peer; value is zero when no instance has been received from that peer

Hellos Sent

Number of hello messages sent

Hellos Received

Number of hello messages received

Hellos Suppressed

Number of hello messages suppressed; message generation is suppressed when a hello request object is received from the destination node within the hello interval

Hellos Acks Sent

Number of acknowledgments sent in response to hello requests received

Hellos Acks Received

Number of acknowledgments received in response to hello requests sent

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