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• Inter-Area-Router-LSA—Originated by ABRs and flooded throughout the LSA's associated area.
Each Inter-Area-Router-LSA describes a route to ASBR.
• AS-external-LSA—Originated by ASBRs, and flooded throughout the AS, except stub and NSSA
areas. Each AS-external-LSA describes a route to another AS. A default route can be described by
an AS external LSA.
• Link-LSA—A router originates a separate Link-LSA for each attached link. Link-LSAs have link-local
flooding scope. Each Link-LSA describes the IPv6 address prefix of the link and Link-local address of
the router.
• Intra-Area-Prefix-LSA—Each Intra-Area-Prefix-LSA contains IPv6 prefix information on a router, stub
area, or transit area information, and has area flooding scope. It was introduced because
Router-LSAs and Network-LSAs contain no address information.
RFC 5187 defines the Grace-LSA. A Grace-LSA is generated by a GR (Graceful Restart) Restarter at
reboot and transmitted on the local link. The restarter describes the cause and interval of the reboot in the
Grace-LSA to notify its neighbors that it performs a GR operation.
Protocols and standards
• RFC 5340, OSPF for IPv6
• RFC 2328, OSPF Version 2
• RFC 5187, OSPFv3 Graceful Restart
OSPFv3 configuration task list
Tasks at a
(Required.) Enabling OSPFv3
(Optional.) Configuring OSPFv3 area parameters:
• Configuring a stub area
• Configuring an OSPFv3 virtual link
(Optional.) Configuring OSPFv3 network types:
• Configuring the OSPFv3 network type for an interface
• Configuring an NBMA or P2MP neighbor
(Optional.) Configuring OSPFv3 route control:
• Configuring OSPFv3 route summarization
• Configuring OSPFv3 received route filtering
• Configuring Inter-Area-Prefix LSA filtering
• Configuring an OSPFv3 cost for an interface
• Configuring the maximum number of OSPFv3 ECMP routes
• Configuring a preference for OSPFv3
• Configuring OSPFv3 route redistribution
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