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

Table 44: 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

Monitoring BGP Peer Groups

Purpose

Action

Meaning

Related Documentation