Configuring mLDP P2MP FRR Link Protection

mLDP P2MP FRR link protection rectifies link faults on mLDP LSPs, which improves user network reliability.

Usage Scenario

With the growth of user services, the demands for using mLDP LSPs to carry multicast traffic are increasing, as well as link faults on mLDP LSPs. mLDP P2MP FRR link protection can be configured to prevent packet loss due to link faults.

mLDP P2MP FRR link protection does not support backup links on a TE tunnel.

Pre-configuration Tasks

Before configuring mLDP P2MP FRR link protection, configure an automatic P2MP TE tunnel.

Enabling mLDP P2MP FRR Link Protection

The mLDP P2MP FRR link protection can be configured in the MPLS-LDP view.

Enabling the Detection of Traffic with New mLDP MBB Incoming Labels

After the detection of traffic with new mLDP MBB incoming labels is enabled, an MBB switchover can be performed as soon as possible after a fault occurs, reducing traffic loss.

(Optional) Setting Timers for mLDP P2MP FRR Link Protection

Timers can be set for mLDP P2MP FRR link protection, which helps properly perform a traffic switchover.

Verifying the Configuration

After configuring mLDP P2MP FRR link protection, verify P2MP multicast LSP information, including FRR LSP information.