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726 | Open Shortest Path First (OSPFv2 and OSPFv3)
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Configuration Task List for OSPFv3 (OSPF for IPv6)
Open Shortest Path First version 3 (OSPF for IPv6) is supported on platforms c e
The configuration options of OSPFv3 are the same as those for OSPFv2, but may be configured with
differently labeled commands. Process IDs and areas need to be specified. Interfaces and addresses need to
be included in the process. Areas can be defined as stub or totally stubby.
The interfaces must be in IPv6 Layer-3 mode (assigned an IPv6 IP address) and enabled so that they can
send and receive traffic. The OSPF process must know about these interfaces. To make the OSPF process
aware of these interfaces, they must be assigned to OSPF areas.
TheOSPFv3
ipv6 ospf area command enables OSPFv3 on the interface and places the interface in an area.
With OSPFv2, two commands are required to accomplish the same tasks: the
router ospf command to
create the OSPF process, then the
network area command to enable OSPF on an interface. Note that the
OSPFv2
network area command can enable OSPF on multiple interfaces with the single command, while
the OSPFv3
ipv6 ospf area command must be configured on each interface that will be running OSPFv3.
All IPv6 addresses on an interface are included in the OSPFv3 process that is created on the interface.
OSPFv3 for IPv6 is enabled by specifying an OSPF Process ID and an Area in the INTERFACE mode. If
an OSPFv3 process has not yet been created, it is created automatically. All IPv6 addresses configured on
the interface are included in the specified OSPF process.
• Enable IPv6 Unicast Routing
• Assign IPv6 addresses on an interface
• Assign Area ID on interface
• Assign OSPFv3 Process ID and Router ID Globally
• Configure stub areas
• Configure Passive-Interface
• Redistribute routes
• Configure a default route
• (Optional) Enable OSPFv3 graceful restart
• (Optional) OSPFv3 Authentication Using IPsec
Note: IPv6 and OSPFv3 do not support Multi-Process OSPF. Only a single OSPFv3 process is can be
enabled.