2.7.2 Enabling Synchronization Between LDP and IGP
To enable LDP and IGP synchronization, configure the interfaces of both ends of the link
between the crossing node of active and standby links and the LDP neighboring node.
Procedure
l When OSPF runs as an IGP, perform the following steps on the interfaces of both ends of
the link between the crossing node of the active link and the standby link and the LDP
neighboring node on the active link:
1. Run:
system-view
The system view is displayed.
2. Run:
interface interface-type interface-number
The interface view is displayed.
3. Run:
ospf ldp-sync
Synchronization between LDP and OSPF is enabled on the interface to be protected.
l When IS-IS runs as an IGP, perform the following steps on the interfaces of both ends of
the link between the crossing node of active and standby links and the LDP neighboring
node on the active link:
1. Run:
system-view
The system view is displayed.
2. Run:
interface interface-type interface-number
The interface view is displayed.
3. Run:
isis enable process-id
IS-IS is enabled.
4. Run:
isis ldp-sync
Synchronization between LDP and IS-IS is enabled on the interface to be protected.
----End
2.7.3 (Optional) Setting the Hold-down Timer Value
You can set the value of the hold-down timer. This time is an interval during which an interface
waits for the setup of an LDP session without setting up an OSPF neighbor relationship.
Context
Perform the following steps on the interface.
Huawei AR1200 Series Enterprise Routers
Configuration Guide - MPLS 2 MPLS LDP Configuration
Issue 01 (2011-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
53
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