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

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

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