The troubleshooting step for verify Multiarea OSPFv3

1. Verify Multiarea OSPFv3

1.1. Use the show ipv6 protocols command to verifyOSPFv3.

1.2. Use the show ipv6 interface brief to verify the OSPFv3-enabled interfaces and the area to which they belong

1.3. Use show ipv6 route ospf to display the routing table

1.4. Use show ipv6 ospf database to display the contents of the LSDB.

2. Multiarea OSPF Troubleshooting Data Structures

2.1. OSPF stores routing information in four main data structures:

2.1.1. Interface table is Includes a list of all active OSPF interfaces. Type 1 LSAs include the subnets associated with each active interface.

2.1.2. Neighbor table used to manage neighbor adjacencies through hello timers and dead timers

2.1.3. Link-state database(LSDB) This is the primary data structure used by OSPF to store network topology information

2.1.4. Routing table after the SPF algorithm is calculated, the best routes are offered to the routing table

3. Multi-area OSPF Troubleshooting Skills

3.1. Before you can begin to diagnose and resolve problems related to a multiarea OSPF implementation, you must be able to do the following:

3.1.1. Understand the processes OSPF uses to distribute, store, and select routing information.

3.1.2. Understand how OSPF information flows within and between areas

3.1.3. Use Cisco IOS commands to gather and interpret the information necessary to troubleshoot OSPF operation.