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Tasks at a glance
(Optional.) Configuring OSPF GR
• Configuring OSPF GR restarter
• Configuring OSPF GR helper
• Triggering OSPF GR
(Optional.) Configuring OSPF NSR
(Optional.) Configuring BFD for OSPF
(Optional.) Configuring OSPF FRR
Enabling OSPF
Enable OSPF before you perform other OSPF configuration tasks.
Configuration prerequisites
Configure the link layer protocol and IP addresses for interfaces to ensure IP connectivity between
neighboring nodes.
Configuration guidelines
To enable OSPF on an interface, you can enable OSPF on the network where the interface resides
or directly enable OSPF on that interface. If you configure both, the latter takes precedence.
You can specify a global router ID, or specify a router ID when you create an OSPF process.
• If you specify a router ID when you create an OSPF process, any two routers in an AS must
have different router IDs. A common practice is to specify the IP address of an interface as the
router ID.
• If you specify no router ID when you create the OSPF process, the global router ID is used. As
a best practice, specify a router ID when you create the OSPF process.
OSPF supports multiple processes and VPNs.
• To run multiple OSPF processes, you must specify an ID for each process. The process IDs
take effect locally and has no influence on packet exchange between routers. Two routers with
different process IDs can exchange packets.
• You can configure an OSPF process to run in a specified VPN instance. For more information
about VPN, see MPLS Configuration Guide.
Enabling OSPF on a network
Step Command Remarks
1. Enter system view.
system-view
N/A
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