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Deploying OSPF

  • Article

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

Deploying OSPF

Deploying Open Shortest Path First (OSPF) requires careful planning and configuration at three levels:

  • The autonomous system

  • The area

  • The network

Planning the autonomous system

For the OSPF autonomous system (AS), you need to:

  1. Subdivide the OSPF AS into areas that can be easily summarized by using summary routes.

  2. Designate the backbone area.

  3. Assign area IDs.

  4. Identify virtual links.

  5. Identify area border routers (ABRs).

  6. Identify stub areas.

  7. Identify autonomous system boundary routers (ASBRs).

Planning each area

For each router, you need to:

  1. Add the areas to which the router is connected.

  2. If the area is a stub area, enable the area as a stub area.

  3. If the router is an ABR, optionally configure the ranges that summarize the IP networks within the area.

  4. If the router is an ABR that uses a virtual link, add the virtual interface.

  5. If the router is an ASBR, enable ASBR and configure optional external route filters.

Planning each network

For each IP address for each router interface that uses OSPF, you need to:

  1. Add the interface to the OSPF routing protocol.

  2. Enable OSPF on the interface.

  3. Configure the interface for the appropriate area ID.

  4. Configure the interface for the appropriate router priority.

  5. Configure the interface for the appropriate link cost.

  6. Configure the interface for the appropriate password.

  7. Configure the interface for the appropriate network type.

  8. If the interface is a single-adapter Frame Relay (or X.25 or ATM) interface, configure the nonbroadcast multiple access (NBMA) neighbors.

For more information, see Configure OSPF.

Testing OSPF

To test your OSPF internetwork, you can perform the following steps:

  1. To verify that a server running Routing and Remote Access is receiving OSPF announcements from all of its adjacent OSPF routers, view the OSPF neighbors for the router. For more information, see View OSPF neighbors.

  2. For each router, view the IP routing table and verify that all of the routes that should be learned from OSPF are present. For more information, see View routing tables.

  3. Use the ping and tracert commands to test connectivity between host computers so that all routing paths are checked. For more information about the ping and tracert commands, see Using the ping command and Using the tracert command.

For information about troubleshooting OSPF, see Troubleshooting OSPF.

Notes

  • This feature is not available on the Itanium-based versions of the Windows operating systems.

  • This content is not available in this preliminary release.