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Configuring Synchronization Between LDP and IGP
Synchronization between LDP and IGP applies to MPLS networks where primary and backup LSPs exist. LSPs are established between LSRs based on IGP. When the LDP session or LDP adjacency on the primary LSP fails (not due to a link failure) or the faulty primary LSP is restored, you can enable synchronization between LDP and IGP to prevent traffic interruption caused by the active/standby switchover.
Pre-configuration Tasks
Before configuring synchronization between LDP and IGP, configure a local LDP session. For details, see Configuring Basic Functions of MPLS LDP.
- Enabling Synchronization Between LDP and IGP
- (Optional) Blocking Synchronization Between LDP and IGP on an Interface
- (Optional) Setting the Hold-down Timer Value
- (Optional) Setting the Hold-max-cost Timer Value
- (Optional) Setting the Delay Timer Value
- (Optional) Configuring LDP Graceful Deletion
- Verifying the Configuration of Synchronization Between LDP and IGP