Using the MPLS/VPN BGP LEG CLU

This module describes the MPLS/VPN BGP LEG CLU.

Information About the MPLS/VPN BGP LEG CLU

The p3bgp utility controls the operation of the BGP LEG and displays its status. The command format is p3bgp <operation>[parameter].

The following table lists the p3bgp operations:

Table 4-1 p3bgp Operations 

Operation
Description 
--start

Starts the BGP LEG 

--stop

Stops the BGP LEG 

--restart

Restarts the BGP LEG 

--status

Displays a short status line for each PE/RR 

--show

Displays a detailed status for a specific PE/RR 

--show-all

Displays a detailed status for each PE/RR 

--refresh

Sends a refresh request to specific PE/RR to receive updated information on all routes 

--refresh-all

Sends a refresh request to all PE/RR to receive updated information on all routes. Use this operation when the PE/RR is disconnected from the LEG and you want to make sure that all the BGP information is propagated to the SCE boxes. The refresh is for new information only; obsolete labels are not checked for validity. 

--force-sync

Used together with --refresh-all . Sends a refresh request to all PE/RR to receive updated information on all routes, and then synchronizes this information with all SCE boxes. After this operation is completed, the SCE boxes are updated with the BGP information. Use this operation when the PE/RR is disconnected from the LEG and you want to make sure that all the BGP information is propagated to the SCE boxes. This operation also makes sure that obsolete labels are removed from the SCE boxes. 

--load-config

Loads the configuration file to the BGP LEG. This operation also restarts the BGP LEG. 

--help

Displays the available p3bgp commands


BGP LEG Status

The following is an example of the p3bgp command-line utility using the status operation

ID
Peer IP
PE Name
Updates
Recv
Notify
Recv
K.Alive
Sent
K.Alive
Recv
Hold
Time

1

1.2.3.4

PE101

150

0

58

57

157

2

1.2.3.5

PE102

183

0

34

33

77


The following list is a description of the status operation output:

•Peer IP—The IP of the PE/RR that is connected to the LEG

•PE name—The name of the PE/RR as configured in the configuration file

•Updates recv—A counter for all the BGP updates received from this PE/RR

•Notify recv—A counter for all the BGP notifications received from this PE/RR

•K.Alive sent—A counter for all the BGP keep alives sent to this PE/RR

•K.Alive recv—A counter for all the BGP keep alives received from this PE/RR

•Hold Time—The remaining time-out for the next keep alive

BGP LEG Detailed Status

The following is an example of the p3bgp command line utility using the show operation on a specific PE router named PE101: 

1 : PE101 
connects                    : 1 
recv UPDATE                 : 150 
recv KEEPALIVE              : 57 
sent KEEPALIVE              : 58 
recv NOTIFY                 : 0 
current holdtime            : 157 
TCP sndwnd                  : 16384 
TCP rcvwnd                  : 87380 
Connection up time          : 0 Days, 1 Hrs, 7 Min, 59 Sec 
refresh requests            : 2 
recv PE AddRoute messages   : 2 
send SM AddRoute messages   : 10 
send SM not connected       : 0 
BGP state                   : Established

The following list is a description of the show operation output:

•connects—The number of successful connections established with this PE/RR since the LEG is up.

•recv UPDATE—A counter for all the BGP updates received from this PE/RR

•recv KEEPALIVE—A counter for all the BGP keep alives received from this PE/RR

•sent KEEPALIVE—A counter for all the BGP keep alives sent to this PE/RR

•recv NOTIFY—A counter for all the BGP notifications received from this PE/RR

•current holdtime—The remaining time-out for the next keep alive

•TCP sndwnd—The TCP send window buffer size

•TCP rcvwnd—The TCP receive window size

•Connection up time—The time since the connection to this PE/RR was established

•refresh requests—A counter for the number of refresh requests requested for this PE/RR

•recv PE AddRoute messages—A counter for BGP add-route messages received from the PE/RR

•send SM AddRoute message—A counter for successful add routes invocations performed on the SM for this PE/RR

•send SM not connected—A counter for SM invocations that were kept in an internal buffer due to disconnected SM

•BGP state—The state of the BGP connection to this PE/RR