Optional) Configuring The Policy Of Triggering To Establish Lsps - Huawei Quidway S9300 series Configuration Manual

Quidway S9300 Terabit Routing Switch
Configuration Guide - MPLS
memory, it is recommended to configure the outbound peer { peer-id | all } split-horizon
command on LSRs to enable split horizon. After that, the LSRs allocate labels only to their
upstream LDP peers.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
mpls ldp
The MPLS LDP view is displayed.
Step 3 Run:
outbound peer { peer-id | all } split-horizon
The split horizon is enabled on the LSR, that is, the LSR allocates labels only to its upstream
LDP peers.
By default, split horizon is disabled on the LDP peer, that is, an LSR allocates labels to both
upstream and downstream devices.
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2.4.6 (Optional) Configuring the Policy of Triggering to Establish
LSPs
By configuring the trigger policy of establishing LSPs, you can use eligible routes to trigger
LDP to set up LSPs.
Context
To set up an LSP according to LDP, you need to set the FEC.
Do as follows on all the LSRs along the LSP:
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
mpls
The MPLS view is displayed.
Issue 04 (2011-12-26)
NOTE
l The establishment of an LSP requires precisely matched routes on the LSR. If a loopback interface
with a 32-bit mask is used, the precisely matched host route is required to trigger the establishment of
LSPs.
l Changing LSP triggering policies during the LDP graceful restart (GR) does not take effect.
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