Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

Navigation
Guide That Contains This Content
[+] Expand All
[-] Collapse All

    Monitoring BGP Peer Groups

    Purpose

    Display information about BGP peer groups.

    The show ip bgp peer-group and show bgp ipv6 peer-group commands display similar information.

    Action

    To display information about BGP peer groups:

    host1#show ip bgp peer-group
    BGP peer-group leftcoast, remote AS 200
      Peer-group members are external peers
      Local AS 100
      Administrative status is Start
      EBGP multi-hop is disabled
      IBGP single-hop is disabled
      BFD is enabled:
         Single-hop IPv4 BFD session
         Minimum transmit interval is 300 ms
         Minimum receive interval is 300 ms
         Multiplier is 3
      Maximum update message size is 1024 octets
      Neighbor weight is 0
      Connect retry interval is 10 seconds initially
      Configured keep-alive interval is 30 seconds
      Configured hold time is 90 seconds
      Minimum route advertisement interval is 30 seconds
      Minimum AS origination interval is 10 seconds
      Graceful restart negotiation:
        Restart time is 120 seconds
        Stale paths time is 360 seconds
      Configuration for address family ipv4:unicast
        RIB-out is disabled
        Default originate is disabled
        Next hop self is disabled
        Next hop unchanged is disabled
        Don't send communities
        Inbound soft reconfiguration is disabled
        Private AS number stripping is disabled
        Override site AS with provider AS is disabled
        No loops in the received AS-path are allowed
        Members: 10.2.2.2 10.3.3.3
    • Fields relevant to conditional advertisement:
          Advertise-map is advertisetoR1 
              Condition-map: trigger1
              Sequence: 5
              Status: Withdraw
          Advertise-map is alternatetoR1
              Condition-map: trigger2
              Sequence: 10
              Status: Advertise

    Meaning

    Table 1 lists the show ip bgp peer-group command output fields.

    Table 1: show ip bgp peer-group Output Fields

    Field Name

    Field Description

    BGP peer group

    Name of a BGP peer group

    remote AS

    Remote AS of the BGP neighbor

    local AS

    Local autonomous system number

    Administrative status

    Desired state of the peer connection

    EBGP multi-hop

    Status of EBGP multihop for the peer group (enabled or disabled)

    IBGP single-hop

    Status of IBGP single hop for the peer group (enabled or disabled)

    BFD

    Status of BFD configuration for the peer group (enabled or disabled)

    BFD session

    Type and address of peer to which BFD session is established

    Description

    Textual description of the BGP neighbor

    Members

    Name of the peer group of which this BGP neighbor is a member

    Default originate

    IP addresses of the members of the BGP peer group

    Minimum transmit interval

    Desired time interval between BFD packets transmitted to members of peer group

    Minimum receive interval

    Desired time interval between BFD packets received from members of peer group

    Multiplier

    Number of BFD packets that can be missed before declaring BFD session down

    Next hop self

    Status of next-hop self information for the peer group (enabled or disabled)

    Peers are route reflector clients

    BGP peer group is configured as a route reflector. This field does not appear when route reflectors are not configured.

    weight

    Neighbor weights assigned to BGP peer groups

    Incoming update distribute list

    Distribute list for incoming routes, if configured

    Outgoing update distribute list

    Distribute list for outgoing routes, if configured

    Incoming update filter list

    Update filter list for incoming routes, if configured

    Outgoing update filter list

    Update filter list for outgoing route, if configured

    Weight filter list

    Weight filter list for routes, if configured

    Incoming route map

    Incoming route map, if configured

    Outgoing route map

    Outgoing route map, if configured

    Minimum route advertisement interval

    Minimum time between route advertisements

    Configured update source IP address

    IP address used when sending update messages

    Advertise-map

    Name of route map that specifies routes to be advertised when routes in conditional route maps are matched

    Condition-map

    Name of route map that specifies routes to be matched by routes in the BGP routing table

    Sequence

    Position of the specified advertise route map in a list of advertise route maps configured for a particular peer within the same address-family. A lower sequence number has a higher priority; that route map is processed before one with a higher sequence number.

    Status

    Status of the routes specified by the route map, advertise (route map condition has been met) or withdraw (route map condition has not been met; regardless of this status, the specified routes might be governed by another route map with a lower sequence number and actually advertised or not according to that map

    Published: 2014-08-18