This chapter describes the key concepts of Open Shortest Path First version 3 (OSPFv3) and provides an overview of its configuration and maintenance. OSPFv3 is applicable to large-scale networks with hundreds of devices.
OSPFv3 neighbor relationship flapping suppression works by delaying OSPFv3 neighbor relationship reestablishment or setting the link cost to the maximum value.
Configuring a non-backbone area as a stub area can reduce routing entries in the area in an AS does not transmit routes learned from other areas in the AS or AS external routes. This reduces bandwidth and storage resource consumption.
By configuring a non-backbone area on the border of an autonomous system (AS) as a not-so-stubby area (NSSA), you can reduce the size of the routing table and the amount of routing information to be transmitted.
If a link fails, an OSPFv3 IP FRR-capable device can fast switch traffic to a backup link, which protects traffic and improves OSPFv3 network reliability.
To speed up OSPFv3 convergence when the link status changes, you can configure BFD for OSPFv3. After detecting a link failure, BFD notifies the routing protocol of the failure, which triggers fast convergence. When the neighbor relationship is Down, the BFD session is deleted dynamically.
Configuring OSPFv3 authentication enables a device to authenticate sent and received OSPFv3 packets, protecting the device against attacks through forged OSPFv3 packets.
OSPFv3 supports the network management function. You can configure the OSPFv3 Management Information Base (MIB) and bind it to an OSPFv3 process through Simple Network Management Protocol (SNMP). In this manner, the OSPFv3 MIB manages multicast information exchanged between the Network Management Station (NMS) and agents.
You can configure whitelist session-CAR for OSPFv3 to isolate bandwidth resources by session for OSPFv3 packets. This configuration prevents bandwidth preemption among OSPFv3 sessions in the case of a traffic burst.