Improving OSPFv3 Network Stability

Setting the Priority of OSPFv3

If multiple dynamic routing protocols run on a device, the device needs to select optimal routes from the routes of these protocols. In this case, you can set a priority for each routing protocol. In this manner, when different protocols discover the routes to the same destination, the route discovered by the protocol with the highest priority is selected.

Setting the Delay in Transmitting LSAs on the Interface

It takes time to transmit OSPFv3 packets on a link. Therefore, a certain delay is added to the aging time of an LSA before the LSA is sent. This configuration is especially necessary on low-speed links.

Setting the Interval at Which LSAs Are Retransmitted Between Adjacent Routers

After a router sends an LSA to its neighbor, the router expects to receive an LSAck packet from the neighbor. If the router does not receive an LSAck packet within the LSA retransmission interval, it retransmits the LSA to the neighbor.

Configuring a Route Calculation Delay to Suppress Frequent LSA Flapping

Configuring the SPF Timer

By setting the interval for Shortest Path First (SPF) calculation, you can reduce resource consumption caused by frequent network changes.

Configuring a Stub Router

When the device is overloaded and cannot forward any other packets, you can configure it as a stub router. After the router is configured as a stub router, other OSPFv3 devices do not use this device to forward data, but they can have a route to this stub router.

Verifying the Configuration of OSPFv3 Network Stability

After improving the OSPFv3 network stability, verify brief information about OSPFv3 and the IP routing table.