Displays summarized information about the status of all BGP4+ connections.
Syntax
show ipv6 bgp summary
Modes
User EXEC mode
The
show ipv6 bgp summary command displays the following information.
Output field
Description
Router ID
The device’s router ID.
Local AS Number
The BGP4+ AS number in which the device resides.
Confederation Identifier
The autonomous system number of the confederation in which the device resides.
Confederation Peers
The numbers of the local autonomous systems contained in the confederation. This
list matches the confederation peer list you configure on the device.
Maximum Number of Paths Supported for Load Sharing
The maximum number of route paths across which the device can balance traffic to
the same destination. The feature is enabled by default but the default number of
paths is 1. You can increase the number from 2 - 8 paths.
Number of Neighbors Configured
The number of BGP4+ neighbors configured on this device.
Number of Routes Installed
The number of BGP4+ routes in the device’s BGP4+ route table.
Number of Routes Advertising to All Neighbors
The total of the RtSent and RtToSend columns for all neighbors.
Number of Attribute Entries Installed
The number of BGP4+ route-attribute entries in the route-attributes table.
Neighbor Address
The IPv6 addresses of this BGP4+ neighbors.
AS#
The autonomous system number.
State
The state of this neighbor session with each neighbor. The states are from this perspective
of the session, not the neighbor’s perspective. The state values can be one of the
following for each:
IDLE - The BGP4+ process is waiting to be started. Usually, enabling BGP4+ or establishing
a neighbor session starts the BGP4+ process.
A minus sign (-) indicates that the session has gone down and the software is clearing
or removing routes.
ADMND - The neighbor has been administratively shut down.
A minus sign (-) indicates that the session has gone down and the software is clearing
or removing routes.
CONNECT - BGP4+ is waiting for the connection process for the TCP neighbor session
to be completed.
ACTIVE - BGP4+ is waiting for a TCP connection from the neighbor.
Note: If the state frequently changes between CONNECT and ACTIVE, there may be a problem
with the TCP connection.
OPEN SENT - BGP4+ is waiting for an Open message from the neighbor.
OPEN CONFIRM - BGP4+ has received an OPEN message from the neighbor and is now waiting
for either a KEEPALIVE or NOTIFICATION message. If the receives a KEEPALIVE message
from the neighbor, the state changes to Established. If the message is a NOTIFICATION,
the state changes to Idle.
ESTABLISHED - BGP4+ is ready to exchange UPDATE packets with the neighbor.
If there is more BGP data in the TCP receiver queue, a plus sign (+) is also displayed.
Note: If you display information for the neighbor using the
show ipv6 bgp neighbor<ipv6-address> command, the TCP receiver queue value will be greater than 0.
Operational States:
Additional information regarding the operational states of BGP described previously
may be added as described in the following:
(+) - is displayed if there is more BGP data in the TCP receiver queue.
Note : If you display information for the neighbor using the
show ip bgp neighborip-addr command, the TCP receiver queue value will be greater than 0.
(>)
- indicates that there is more BGP data in the outgoing queue.
(-)
- indicates that the session has gone down and the software is clearing or removing
routes.
(*)
- indicates that the inbound or outbound policy is being updated for the peer.
(c)
- indicates that the table entry is clearing.
(p)
- indicates that the neighbor ribout group membership change is pending or in progress
(s)
- indicates that the peer has negotiated restart, and the session is in a stale state.
(r)
- indicates that the peer is restarting the BGP4 connection, through restart.
(^)
- on the standby MP indicates that the peer is in the ESTABLISHED state and has received
restart capability (in the primary MP).
(<)
- indicates that the device is waiting to receive the "End of RIB" message the peer.
Time
The time that has passed since the state last changed.
Accepted
The number of routes received from the neighbor that this installed in the BGP4+
route table. Usually, this number is lower than the RoutesRcvd number. The difference
indicates that this filtered out some of the routes received in the UPDATE messages.
Filtered
The routes or prefixes that have been filtered out.
If soft reconfiguration is enabled, this field shows how many routes were filtered
out (not placed in the BGP4+ route table) but retained in memory.
If soft reconfiguration is not enabled, this field shows the number of BGP4+ routes
that have been filtered out.
Sent
The number of BGP4+ routes that the has sent to the neighbor.
ToSend
The number of routes the has queued to send to this neighbor.
Examples
The following example displays sample output from the
show ipv6 bgp summary command.
device> show ipv6 bgp summary
device> show ipv6 bgp summary
BGP4 Summary
Router ID: 113.1.1.1 Local AS Number: 65020
Confederation Identifier: not configured
Confederation Peers:
Maximum Number of IP ECMP Paths Supported for Load Sharing: 1
Number of Neighbors Configured: 2, UP: 1
Number of Routes Installed: 5, Uses 430 bytes
Number of Routes Advertising to All Neighbors: 7 (7 entries), Uses 336 bytes
Number of Attribute Entries Installed: 4, Uses 360 bytes
Neighbor Address AS# State Time Rt:Accepted Filtered Sent ToSend
2001:db8:113:113::2 65001 CONN 1d14h32m 0 0 0 4
2001:db8:400:400::2 65020 ESTAB 3h59m24s 2 0 3 0