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no ipv6 router ospf process-id vrf {vrf-name}
● Reset the OSPFv3 process.
EXEC Privilege mode
clear ipv6 ospf [vrf vrf-name] process
Configuring Stub Areas
OSPF supports different types of LSAs to help reduce the amount of router processing within the areas.
Type 5 LSAs are not flooded into stub areas; the ABR advertises a default route into the stub area to which it is attached. Stub
area routers use the default route to reach external destinations.
To ensure connectivity in your OSPFv2 network, never configure the backbone area as a stub area.
To configure a stub area, use the following commands.
1. Review all areas after they were configured to determine which areas are NOT receiving type 5 LSAs.
EXEC Privilege mode
show ip ospf process-id [vrf vrf name] database database-summary
2. Enter CONFIGURATION mode.
EXEC Privilege mode
configure
3. Enter ROUTER OSPF mode.
CONFIGURATION mode
router ospf process-id [vrf {vrf name}]
Process ID is the ID assigned when configuring OSPFv2 globally.
4. Configure the area as a stub area.
CONFIG-ROUTER-OSPF-id mode
area area-id stub [no-summary]
Use the keywords no-summary to prevent transmission into the area of summary ASBR LSAs.
Area ID is the number or IP address assigned when creating the area.
To view which LSAs are transmitted, use the show ip ospf database process-id database-summary command in
EXEC Privilege mode.
Dell#show ip ospf 34 database database-summary
OSPF Router with ID (10.1.2.100) (Process ID 34)
Area ID Router Network S-Net S-ASBR Type-7 Subtotal
2.2.2.2 1 0 0 0 0 1
3.3.3.3 1 0 0 0 0 1
Dell#
To view information on areas, use the show ip ospf process-id command in EXEC Privilege mode.
Configuring LSA Throttling Timers
Configured LSA timers replace the standard transmit and acceptance times for LSAs.
The LSA throttling timers are configured in milliseconds, with the interval time increasing exponentially until a maximum time has
been reached. If the maximum time is reached, the system continues to transmit at the max-interval. If the system is stable for
twice the maximum interval time, the system reverts to the start-interval timer and the cycle begins again.
1. Specify the interval times for all LSA transmissions.
CONFIG-ROUTEROSPF- id mode
timers throttle lsa all {start-interval | hold-interval | max-interval}
● start-interval: set the minimum interval between the initial sending and resending the same LSA. The range is from
0 to 600,000 milliseconds.
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Open Shortest Path First (OSPFv2)