Context
You do not need to specify BFD parameters when configuring dynamic BFD for LDP LSPs. Dynamic BFD for LDP LSPs speeds up link fault detection and reduces the configuration workload. This configuration is simple and flexible.
When configuring dynamic BFD for LDP LSPs, pay attention to the following points:
- Dynamic BFD only monitors the LDP LSP that is established using a host route.
- The forwarding modes on the forwarding path and reverse path can be different (for example, an IP packet is sent from the source to the destination through an LSP, and is sent from the destination to the source in IP forwarding mode), but the forwarding path and reverse path must be established over the same link. If they use different links, BFD cannot identify the faulty path when a fault is detected.
Configuration Procedure
Configure dynamic BFD for LDP LSPs according to the following sequence.