3com S7906E Guía De Referencia
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By default, an egress supports PHP and distributes to the penultimate hop an implicit null label.
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The type of label for an egress to distribute depends on whether the penultimate hop supports
PHP.
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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.
Examples
# 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
Syntax
label-distribution { independent | ordered }
undo label-distribution
View
MPLS LDP view, MPLS LDP VPN instance view
Default Level
1: Monitor level
Parameters
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.
Description
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.