Brocade Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide (Supporting R05.6.00) User Manual

Page 672

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Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide

53-1003031-02

Displaying BGP or MPLS VPNv4 information

6

Number of routes received from the neighbor

Number of routes accepted by this device from the neighbor

Number of routes this device filtered out of the UPDATES received from the neighbor and did
not accept

Number of routes advertised to the neighbor

Number of attribute entries associated with routes received from or advertised to the neighbor

This display shows the following information.

TABLE 114

BGP4 neighbor information

This field...

Displays...

IP Address

The IP address of the neighbor.

AS

The AS the neighbor is in.

EBGP or IBGP

Whether the neighbor session is an IBGP session, an EBGP session, or
a confederation EBGP session:

EBGP – The neighbor is in another AS.

EBGP_Confed – The neighbor is a member of another sub-AS in
the same confederation.

IBGP – The neighbor is in the same AS.

RouterID

The neighbor’s ID.

Description

The description the user gave the neighbor when the user configured it
on the device.

State

The state of the session with the neighbor. The states are from the
perspective of this device of the session, not the perspective of the
neighbor. The state values are based on the BGP4 state machine values
described in RFC 1771 and can be one of the following for each device:

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: When 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. When the device receives a KEEPALIVE
message from the neighbor, the state changes to Established.
When the message is a NOTIFICATION, the state changes to Idle.

ESTABLISHED – BGP4 is ready to exchange UPDATE messages
with the neighbor.

When there is more BGP data in the TCP receiver queue, a plus
sign (+) is also displayed.

NOTE: When the user displays information for the neighbor using the

show ip bgp neighbor ip-addr command, the TCP receiver queue
value is greater than 0.

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