Optional) Configuring Ldp To Automatically Trigger The Request In Dod Mode - Huawei AR1200 Series Configuration Manual - Mpls

Huawei AR1200 Series Enterprise Routers
Configuration Guide - MPLS
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2.5.5 (Optional) Configuring LDP to Automatically Trigger the
Request in DoD Mode
A remote LDP session must be configured before LDP is configured to automatically send
request in DoD mode
Context
On a large-scale network deployed with a large number of remote LDP peers, you can prevent
wasting resources to ensure network stability. Run the remote-peer auto-dod-request
command to configure the function of triggering a request to a downstream node for a label
mapping message associated with all remote LDP peers or a remote LDP peer with a specified
LSR ID in DoD mode, which can save system resources.
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:
Issue 01 (2011-12-30)
system-view
The system view is displayed.
2. Run:
interface interface-type interface-number
The interface view is displayed.
3. Run:
mpls ldp advertisement { dod | du }
A label advertisement mode is configured.
NOTE
l A pair of LDP peers must have the same label advertisement mode. Inconsistency in label
advertisement modes causes the two LDP peers to fail to establish LDP LSPs between them
over multiple links.
l Modifying a configured label advertisement mode leads to the reestablishment of an LDP
session, resulting in service interruptions.
NOTE
l A remote LDP session must be configured before the remote-peer auto-dod-request command is run.
l Run the longest-match command to configure LDP extension for inter-area LSP before running the
remote-peer auto-dod-request command.
l The mpls ldp advertisement dod command should be run to create an LDP session with a downstream
node in DoD mode before you run the remote-peer auto-dod-request command.
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