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    Monitoring the Status of All BGP Neighbors

    Purpose

    Display summarized status of all BGP neighbors.

    The show ip bgp summary and show bgp ipv6 summary commands display similar information.

    Action

    To display summarized status of all BGP neighbors:

    host1#show bgp ipv6 summary
    Local router ID 10.13.13.13, local AS 400
      Administrative state is Start
      BGP Operational state is Up
      Shutdown in overload state is disabled
      Default local preference is 100
      IGP synchronization is disabled
      Default originate is disabled
      Always compare MED is disabled
      Compare MED within confederation is disabled
      Advertise inactive routes is disabled
      Advertise best external route to internal peers is disabled
      Enforce first AS is disabled
      Missing MED as worst is disabled
      Route flap dampening is disabled
      Maximum number of equal-cost EBGP paths is 2
      Maximum number of equal-cost IBGP paths is 2
      Log neighbor changes is disabled
      Fast External Fallover is disabled
      No maximum received AS-path length
      BGP administrative distances are 20 (ext), 200 (int), and 200 (local)
      Client-to-client reflection is enabled
      Cluster ID is 10.13.13.13
      Route-target filter is enabled
      Default IPv4-unicast is enabled
      Redistribution of iBGP routes is disabled
      Graceful restart is globally disabled
      Global graceful-restart restart time is 120 seconds
      Global graceful-restart stale paths time is 360 seconds
      Graceful-restart path selection defer time is 360 seconds
      This platform supports only the receiver role of graceful restart
      Route Distinguisher: 100:11
      Import route map: test2-import-map
      Export route map: test1-export-map (cannot filter routes)
      Global import route map: test3-global-import-map
      103 routes imported from global table (max 5000 routes allowed)
      Global export route map: test4-global-export-map
      Local-RIB version 7. FIB version 7.
                                                    Messages  Messages  Prefixes
    Neighbor           AS State       Up/down time      Sent  Received  Received
    11.11.11.11       400 Established     00:36:19        78        81         2
    12.12.12.12       400 Established     00:36:21        78        78         1
    103.103.103.3     300 Established     00:36:34        85        80         2 

    To display the status of next hop reachability checking by specifying vpnv4:

    host1#show ip bgp vpnv4 all summary 
    Local router ID 10.13.5.19, local AS 100
      Administrative state is Start
      BGP Operational state is Up
     ...
      Default IPv4-unicast is enabled
      Redistribution of iBGP routes is disabled
      Check reachability of next-hops for VPN routes is enabled
     ...

    To display the status of fields related to enabling local AS numbers to be received in routes:

    host1#show ip bgp summary fields remote-as state rib-version 
    send-queue-length more-in-queue 
                                                Send More
    Neighbor           AS State         RIB Ver    Q InQ
    2.2.2.2           100 Established         2    0 no   

    Meaning

    Table 1 lists the show bgp ipv6 summary command output fields.

    Table 1: show bgp ipv6 summary Output Fields

    Field Name

    Field Description

    Local router ID

    Router ID of the local router

    local AS

    Local autonomous system number

    Administrative state

    BGP administrative state, start or stop

    BGP Operational state

    Operational state, up, down, or overload

    Shutdown in overload state

    Status, enabled or disabled

    Default local preference

    Default value for local preference

    IGP synchronization

    Synchronization status, enabled or disabled

    Default originate

    Whether network 0.0.0.0 is redistributed into BGP (enabled) or not (disabled)

    Auto-summary

    Status of auto summarization of routes redistributed into BGP

    Always compare MED

    Status, enabled or disabled

    Compare MED within confederation

    Status, enabled or disabled

    Advertise inactive routes

    Status, enabled or disabled

    Advertise best external route to internal peer

    Status, enabled or disabled

    Enforce first AS

    Status, enabled or disabled

    Missing MED as worst

    Status, enabled or disabled

    Route flap dampening

    Status, enabled or disabled

    Maximum number of equal-cost EBGP paths

    Number of paths

    Maximum number of equal-cost IBGP paths

    Number of paths

    Log neighbor changes

    Status, enabled or disabled

    Fast External Fallover

    Status, enabled or disabled

    No maximum received AS-path length

    Indicates whether limit is set for AS-path length and, if set, the limit

    BGP administrative distances

    Distances for external, internal, and local BGP routes

    Router is a route reflector

    Indicates whether the router has been configured as a route reflector

    Client-to-client reflection

    Whether client-to-client reflection is configured (enabled) or not (disabled)

    Cluster ID

    Identifying number for cluster ID

    Route-target filter

    Status, enabled or disabled

    Default IPv4-unicast

    Status, enabled or disabled

    Redistribution of iBGP routes

    Status, enabled or disabled

    Check reachability of next-hops for VPN routes

    Status, enabled or disabled

    Graceful restart

    Status, enabled or disabled

    Global graceful-restart restart time

    Time in seconds

    Global graceful-restart stale paths time

    Time in seconds

    Graceful-restart path selection defer time

    Time in seconds

    Route Distinguisher

    RD assigned to the VRF

    Confederation ID

    Confederation ID

    Confederation peers

    Confederation peers

    Import route map

    Route map associated with the VRF that filters and modifies routes imported to the VRF from the global BGP VPN RIB. The map applies to both IPv4 and IPv6 routes, unless the field name is preceded by IPv4 (applies the map to only IPv4 routes) or IPv6 (applies the map to only IPv6 routes).

    Export route map

    Route map associated with the VRF that modifies and filters routes exported by the VRF to the global BGP VPN RIB. The map applies to both IPv4 and IPv6 routes, unless the field name is preceded by IPv4 (applies the map to only IPv4 routes) or IPv6 (applies the map to only IPv6 routes). The can filter routes text appears only if the filter keyword was issued for export map.

    Global import route map

    Route map associated with the VRF that modifies routes imported to the VRF from the global BGP non-VPN RIB. The map applies to both IPv4 and IPv6 routes, unless the field name is preceded by IPv4 (applies the map to only IPv4 routes) or IPv6 (applies the map to only IPv6 routes).

    routes imported from global table

    Number of routes imported from the global BGP non-VPN RIB; also lists the maximum number of routes that can be imported

    Global export route map

    Route map associated with the VRF that modifies routes exported by the VRF to the global BGP non-VPN RIB. The map applies to both IPv4 and IPv6 routes, unless the field name is preceded by IPv4 (applies the map to only IPv4 routes) or IPv6 (applies the map to only IPv6 routes).

    Local-RIB version

    Number that is increased by one each time a route in that RIB is added, removed or modified.

    FIB version

    Number that is increased by one each time BGP updates the routes in the IP routing table based on changes in the local RIB. The FIB version matches the local-RIB version when BGP has finished updating the routes in the IP route table. The FIB version is less than the local-RIB version when BGP is still in the process of updating the IP routing table.

    Neighbor

    BGP neighbors

    AS

    AS number of the peer

    Ver

    Negotiated BGP version number

    State

    State of the connection

    Up/down time

    Time the connection has been up or down

    Messages sent

    Number of messages sent to peer

    Messages received

    Number of messages received from peer

    Prefixes received

    Number of prefixes received from peer

    Rib Ver

    Last RIB version queued to be sent to peer

    Send Q

    Number of messages queued to be sent to peer

    More InQ

    Status indicating whether any messages are waiting to be sent to peer

    Published: 2014-08-18