3com S7906E Guide De Référence

 

1-30 

By default, an egress supports PHP and distributes to the penultimate hop an implicit null label. 

 

z 

The type of label for an egress to distribute depends on whether the penultimate hop supports 

PHP. 

z 

If LDP sessions have been established, you need to use the reset mpls ldp command to reset the 

sessions to bring the label advertise command into effect. 

 

# Configure the egress to distribute an explicit null label to the penultimate hop. 

<Sysname> system-view 

[Sysname] mpls 

[Sysname-mpls] label advertise explicit-null 

label-distribution { independent | ordered } 

MPLS LDP view, MPLS LDP VPN instance view 

1: Monitor level 

independent: Works in independent mode, advertising label bindings anytime. 

ordered: Works in ordered mode, advertising to its upstream a label binding for a FEC only when it 

receives a specific label binding message from the next hop of the FEC or it is the egress of the FEC. 

Use the label-distribution command to specify the label distribution control mode. 

Use the undo label-distribution command to restore the default. 

The default mode is ordered.