display bgp link-state unicast peer

Function

The display bgp link-state unicast peer command displays information about BGP-LS peers and their status.

The display bgp link-state unicast slow-peer command displays information about BGP-LS slow peers.

Format

display bgp link-state unicast peer

display bgp link-state unicast slow-peer

Parameters

None

Views

All views

Default Level

1: Monitoring level

Task Name and Operations

Task Name	Operations
bgp	read

Usage Guidelines

Usage Scenario

To check information about BGP-LS peers and their status, run the display bgp link-state unicast peer command. The command output shows the following information:

BGP-LS peer connection status
BGP-LS peer configurations
Whether BGP-LS peers are successfully configured
Whether BGP-LS peers are successfully deleted
To check information about slow BGP peers, run the display bgp link-state unicast slow-peer command. The information includes the time when a peer began to be identified as a slow peer, the time when a peer last exited from the slow peer state, the number of times a peer has been identified as a slow peer, and the remaining time for a peer to exit from the slow peer state.

Example

The actual command output varies according to the device. The command output here is only an example.

# Display information about slow BGP peers in the BGP-LS address family.

<HUAWEI> display bgp link-state unicast slow-peer
Total number of peers : 2                 
 Switchback detection timer: Remaining 3581 Second(s)
 Peer            LastSlowEndTime              SlowStartTime                SlowCount 
 10.1.1.1        2016-04-10 20:41:33+00:00    2016-04-12 00:02:33+00:00    3 
 10.2.2.1        2016-04-11 23:02:40+00:00    2016-04-12 00:02:40+00:00    5

# Display information about BGP-LS peers and their status.

<HUAWEI> display bgp link-state unicast peer
BGP local router ID : 192.168.102.3
 Local AS number : 100
 Total number of peers : 1                 Peers in established state : 1

  Peer            V          AS  MsgRcvd  MsgSent  OutQ  Up/Down       State  PrefRcv
  192.168.102.4   4         100       52       55     0 00:39:10 Established        4

**Table 1** Description of the **display bgp link-state unicast peer** command output
Item	Description
Total number of peers	Total number of BGP-LS peers.
Switchback detection timer	Remaining time for a peer to exit from the slow peer state.
Peer	IP address of a BGP-LS peer.
Peer	IP address of a slow peer.
LastSlowEndTime	Time when a peer last exited from the slow peer state.
SlowStartTime	Time when a peer began to be identified as a slow peer.
SlowCount	Number of times a peer has been identified as a slow peer.
BGP local router ID	BGP local router ID.
Local AS number	Local AS number.
AS	Autonomous system number.
Peers in established state	Number of BGP-LS peers in Established state.
V	BGP version used by a BGP-LS peer.
MsgRcvd	Number of received messages.
MsgSent	Number of sent messages.
OutQ	Number of messages to be sent to the specified peer.
Up/Down	Duration in which the BGP session remains in the current state.
State	Current BGP state: Idle: BGP denies all connection requests. This is the initial state of BGP. Connect: BGP is waiting for the TCP connection establishment to complete before performing further actions. Active: BGP tries to set up a TCP connection. This is an intermediate state of BGP. OpenSent: BGP has sent an Open message to a peer and is now waiting for an Open message from the peer. OpenConfirm: BGP is waiting for a Notification or Keepalive message. Established: BGP peers can exchange Update, Notification, and Keepalive messages. No neg: The address family is not enabled for the BGP peer. In this state, Update messages can be exchanged in other address families whose capabilities have been successfully negotiated. If the address family is enabled for the BGP peer, the local BGP peer receives a Notification message, and the peer relationship is disconnected. Then, the BGP peer changes to the Idle state and re-establishes the peer relationship.
PrefRcv	Number of route prefixes received from a BGP-LS peer.