Users Guide

CONFIGURATION mode
ipv6 router ospf {process ID} vrf {vrf-name}
The process ID range is from 0 to 65535.
• Assign the router ID for this OSPFv3 process.
CONF-IPV6-ROUTER-OSPF mode
router-id {number}
– number: the IPv4 address.
The format is A.B.C.D.
NOTE: Enter the router-id for an OSPFv3 router as an IPv4 IP address.
• Disable OSPF.
CONFIGURATION mode
no ipv6 router ospf process-id vrf {vrf-name}
• Reset the OSPFv3 process.
EXEC Privilege mode
clear ipv6 ospf [vrf vrf-name] process
Conguring Stub Areas
OSPF supports dierent types of LSAs to help reduce the amount of router processing within the areas.
Type 5 LSAs are not ooded 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 congure the backbone area as a stub area.
To congure a stub area, use the following commands.
1. Review all areas after they were congured 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 conguring OSPFv2 globally.
4. Congure 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.
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Open Shortest Path First (OSPFv2)