H3C Technologies H3C S10500 Series Switches - Manual (Page 91)

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Task Remarks
Logging neighbor state changes Optional
Configuring OSPF network management Optional
Enabling message logging Optional
Enabling the advertisement and reception of opaque LSAs Optional
Configuring OSPF to give priority to receiving and processing
hello packets
Optional
Configuring the LSU transmit rate Optional
Enabling OSPF ISPF Optional
Configuring OSPF FRR Optional
Configuring the OSPF GR Restarter Optional
Configuring the OSPF GR Helper Optional
Configuring OSPF
Graceful Restart
Triggering OSPF Graceful Restart Optional
Configuring OSPF NSR Optional
Configuring BFD for OSPF Optional
Enabling OSPF
You must enable OSPF before performing other OSPF configuration tasks.
Configuration prerequisites
Configure the link layer protocol, and IP addresses for interfaces so that neighboring nodes can reach
each other.
Configuration procedure
To enable OSPF on a router, create an OSPF process and specify areas with which the process is
associated, and the network segments contained in each area. If an interface’s IP address resides on a
network segment of an area, the interface belongs to the area and is enabled with OSPF, and OSPF
advertises the direct route of the interface.
To run OSPF, a router must have a router ID, which is the unique identifier of the router in the AS.
Following is additional information about router IDs:
• You can specify a router ID when creating the OSPF process. Any two routers in an AS must have
different router IDs. In practice, the ID of a router is the IP address of one of its interfaces.
• If you specify no router ID when creating the OSPF process, the global router ID is used. H3C
recommends you to specify a router ID when you create the OSPF process.
OSPF can run multiple processes and supports VPNs as follows:
• When a router runs multiple OSPF processes, specify a router ID for each process, which takes
effect locally and has no influence on packet exchange between routers. Two routers having
different process IDs can exchange packets.
• OSPF support for VPNs enables an OSPF process to run in a specified VPN.