Specifying The Label Processing Modes - H3C S9500 Series Operation Manual

Operation Manual – MPLS Basics
H3C S9500 Series Routing Switches
Enter system view
Enter MPLS view
Configure the LSP
establishment triggering
policy
Note:
If you do not specify prefix-name (that is, all FECs are specified) while executing the
lsp-trigger command, all static routes and IGP routing entries can trigger LDP to
establish LSPs.
For an LSP to be established, an exactly matched routing entry must exist on the
LSR. With loopback addresses using 32-bit masks, only exactly matched host
routing entries can trigger LDP to establish LSPs.

1.7.7 Specifying the Label Processing Modes

Follow these steps to specify the LDP label advertisement mode, distribution control
mode, and retention mode:
Enter system view
Enter interface view
Specify the label
advertisement mode
Exit to system view
Enter MPLS LDP view
Enable LDP capability
and enter MPLS LDP view
Specify the label
distribution control mode
To do...
system-view
mpls
lsp-trigger { all | ip-prefix
prefix-name }
To do...
system-view
interface interface-type
interface-number
mpls ldp advertisement
{ dod | du }
quit
mpls ldp
label-distribution
{ independent | ordered }
Chapter 1 MPLS Basics Configuration
Use the command...
Use the command...
1-24
Remarks
—
—
Optional
Only local loopback
addresses with 32-bit
masks can trigger LDP to
establish LSPs by default.
Remarks
—
—
Optional
DU by default
—
Required
Optional
ordered by default
Note that you must reset
LDP sessions for the
configuration to take
effect.