Quick Reference Guide

818 PowerConnect B-Series TI24X Configuration Guide
53-1002269-02
Displaying BGP4 information
25
Displaying the active BGP4 configuration
To view the active BGP4 configuration information contained in the running-config without
displaying the entire running-config, use the following CLI method.
To display the device active BGP4 configuration, enter the following command at any level of the
CLI.
State The state of this router neighbor session with each neighbor. The states are from
this router perspective of the session, not the neighbor perspective. The state
values are based on the BGP4 state machine values described in RFC 1771 and
can be one of the following for each router:
• 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. Refer to
“Administratively shutting down a session with a BGP4 neighbor” on
page 766.
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
router 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 ip bgp neighbor
<ip-addr> command, the TCP receiver queue value will be greater than 0.
Time The time that has passed since the state last changed.
Accepted The number of routes received from the neighbor that this router installed in the
BGP4 route table. Usually, this number is lower than the RoutesRcvd number.
The difference indicates that this router 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 Layer 3 Switch has sent to the neighbor.
ToSend The number of routes the Layer 3 Switch has queued to send to this neighbor.
TABLE 126 BGP4 summary information (Continued)
This field... Displays...