Configuring OSPFv3 IP FRR

Usage Scenario

With the development of networks, Voice over IP (VoIP) and on-line video services require high-quality real-time transmission. Nevertheless, if an OSPFv3 fault occurs, traffic can be switched to a new link only after the following processes: fault detection at the millisecond level, notifying the fault to the routing control plane at the millisecond level, generating and flooding new topology information at the tens of milliseconds level, triggering SPF calculation at the tens of milliseconds level, and notifying and installing a new route at the hundreds-of-milliseconds level. As a result, it takes much more than 50 ms to recovery the link from the fault, which cannot meet the requirement for real-time services on the network.

With OSPFv3 IP FRR that calculates a backup link in advance, devices can fast switch traffic to the backup link without interrupting traffic when the primary link becomes faulty. This protects traffic and therefore greatly improves the reliability of OSPFv3 networks.

OSPFv3 IP FRR is applicable to the services that are sensitive to packet delay and packet loss.

Only the S5720-EI, S5720-HI, S5720I-SI, S5720S-SI, S5720-SI, S5735-S, S5735S-S, S5735-S-I, S5730-HI, S5730S-EI, S5730-SI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6720S-SI, S6720-SI, S6730-H, S6730S-H, S6730-S, and S6730S-S support this function.