3Com S7902E Command Reference Manual - page 1562
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.
Examples
# Configure the egress to distribute an explicit null label to the penultimate hop.
[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.