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display bgp group

display bgp group

Function

The display bgp group command displays information about BGP peer groups.

Format

display bgp group [ group-name ]

display bgp ipv6 group [ group-name ]

Parameters

Parameter Description Value
group-name Specifies the name of a peer group. It is a string of 1 to 47 case-sensitive characters without any spaces.
ipv6 Displays information about IPv6 peer groups. -

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

Usage Scenario

Configuring BGP peer groups simplifies BGP network configuration and improves the route advertisement efficiency.

The display bgp group command displays information about the peer group, including peers in the peer group and configuration information about the peer group. The display bgp group command is used in the following scenarios:
  • Verify the configuration after running the group command to configure the peer group.
  • Verify the configuration after running the peer group command to add a peer to the peer group.
  • Verify the configuration after running the undo peer group command to delete a peer from the peer group.
  • Verify the configuration after modifying the configuration of the peer group.

Precautions

BGP has multiple address families, each of which is configured independently. Information about peer groups in address families can be displayed by specifying different parameters.

If no parameter is specified, the display bgp group command displays default information about peer groups in the IPv4 unicast address family.

Example

# Display information about a peer group named my-peer.

<AC6605> display bgp group my-peer

 BGP peer-group: my-peer
 Remote AS: 200
 Authentication type configured: None
 Group's BFD has been enabled
 Type : internal
 Configured hold timer value: 180
 Keepalive timer value: 60
 Minimum route advertisement interval is 15 seconds
 listen-only has been configured
 PeerSession Members:
   10.2.2.2

 Maximum allowed route limit: 8000
 Threshold: 75%, Parameter:  always connect-retry(default)
 Peer Preferred Value: 0
 No routing policy is configured
 Peer Members:
  Peer             V    AS  MsgRcvd  MsgSent  OutQ  Up/Down       State PrefRcv
  10.2.2.2         4   200        0        0     0 00:00:47      Active       0
Table 6-280  Description of the display bgp group command output

Item

Description

BGP peer-group

Indicates the name of a BGP peer group

Remote AS

Indicates the number of the AS where a peer group resides.

Authentication type configured
Indicates the configured BGP authentication type:

  • MD5

  • Keychain (kk), in which kk indicates the name of the configured keychain authentication.

  • None: indicates that no BGP authentication is configured.

Group's BFD has been enabled

Indicates that BFD has been enabled for a peer group.

Type
Indicates the type of a peer group:

  • internal: indicates that the peer group is an IBGP peer group.

  • external: indicates that the peer group is an EBGP peer group.

Configured hold timer value

Indicates the value of the Hold timer.

Keepalive timer value

Indicates the value of the Keepalive timer.

Minimum route advertisement interval

Indicates the minimum interval between route advertisements.

Listen-only has been configured

Indicates that the peer or peer group only detects connection requests, and does not initiate any connection.

PeerSession Members

Indicates peers that set up sessions.

Maximum allowed route limit

Indicates the maximum number of allowed BGP routes.

Threshold

Indicates the threshold for the quantity of received BGP routes (in percentage) out of the maximum number of routes that can be received.

Parameter
If peer route-limit command is configured, this parameter will be displayed:
  • always connect-retry(default): By default, BGP Always connect-retry when the maximum is exceeded and the BGP session is terminated.
  • alert-only: Allows the wireless access controller to generate log message without terminating BGP session when the maximum is exceeded.
  • idle-forever: Don't auto-connect-retry until reset bgp when the maximum is exceeded and then terminating BGP session.
  • idle-timeout: Auto-connect-retry after timeout when the maximum is exceeded and then terminating BGP session.

Peer Preferred Value

Indicates the preferred value of a peer.

Peer Members

Indicates that the following information is about peers.

Peer

Indicates the IP address of a peer.

V

Indicates the BGP version.

AS

Indicates the number of the AS where a member of a peer group resides.

MsgRcvd

Indicates the number of received messages.

MsgSent

Indicates the number of sent messages.

OutQ

Indicates the number of messages to be sent to peers.

Up/Down

Indicates the period of time during which a BGP session keeps the current state.

State
Indicates the BGP state mechanism:

  • Idle: indicates that BGP denies any request of entering. This is the initiatory status of BGP.

    Upon receiving a Start event, BGP initiates a TCP connection to the remote BGP peer, starts the ConnectRetry Timer with the initial value, detects a TCP connection initiated by the remote BGP peer, and changes its state to Connect.

  • Idle(Admin): indicates that the peer relationship is shut down initiatively and no attempt is made to establish the neighbor relationship.

    If the peer ignore command is configured or the peer is set to the Down state through the MIB, the neighbor is in the Idle (Admin) state.

  • Idle(Ovlmt): indicates that the peer relationship is interrupted because the number of routes exceeds the upper threshold.

    After a BGP peer relationship is interrupted due to the running of the peer route-limit command, the status of the BGP peer relationship is displayed as Idle(Ovlmt). If the reset bgp command is not run, the BGP peer relationship will not be reestablished.

  • Connect: indicates that BGP waits for the TCP connection to be set up before it determines whether to perform other operations.

    • If the TCP connection succeeds, BGP stops the ConnectRetry Timer, sends an Open message to the remote peer, and changes its state to OpenSent.

    • If the TCP connection fails, BGP restarts the ConnectRetry Timer with the initial value, continues to detect a TCP connection initiated by the remote peer, and changes its state to Active.

    • If the ConnectRetry Timer has expired before a TCP connection is established, BGP restarts the timer with the initial value, initiates a TCP connection to the remote BGP peer, and stays in the Connect state.

  • Active: indicates that BGP tries to set up a TCP connection. This is the intermediate status of BGP.

    • If the TCP connection succeeds, BGP stops the ConnectRetry Timer, sends an Open message to the remote peer, and changes its state to OpenSent.

    • If the ConnectRetry Timer has expired before a TCP connection is established, BGP restarts the timer with the initial value and changes its state to Connect.

    • If BGP initiates a TCP connection with an unknown IP address, the TCP connection fails. When this occurs, BGP restarts the ConnectRetry Timer with the initial value and stays in the Active state.

  • OpenSent: indicates that BGP has sent one Open message to its peer and waits for the other Open message from the peer.

    • If there are no errors in the Open message received, BGP changes its state to OpenConfirm.

    • If there are errors in the Open message received, BGP sends a Notification message to the remote peer and changes its state to Idle.

    • If the TCP connection fails, BGP restarts the ConnectRetry Timer with the initial value, continues to detect a TCP connection initiated by the remote peer, and changes its state to Active.

  • OpenConfirm: indicates that BGP waits for a Notification message or a Keepalive message.

    • If BGP receives a Notification message, or the TCP connection fails, BGP changes its state to Idle.

    • If BGP receives a Keepalive message, BGP changes its state to Established.

  • Established: indicates that BGP peers can exchange Update, Notification and Keepalive packets.

    • If BGP receives an Update or a Keepalive message, its state stays in Established.

    • If BGP receives a Notification message, BGP changes its state to Idle.

PrefRcv

Indicates the number of route prefixes received by the local peer from the remote peer.

# Display information about all BGP IPv6 peer groups.

<AC6605> display bgp ipv6 group
BGP peer-group is in
 Remote AS 100
 Type : internal
 PeerSession Members:
   2::1
 
 Peer Members:
   1::1               2::1
 ***********************
 
 BGP peer-group is ex
 Remote AS number not specified
 Type : external
 PeerSession Members:
   20::1
 Peer Members:
   10::1              20::1
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Updated: 2021-02-27

Document ID: EDOC1100064351

Views: 3163125

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