
114065 Rev. A E-1
Appendix E
IP/OSPF Configuration
The IP/OSPF configuration in Figure E-1 shows an AS divided into different
types of OSPF areas using several types of OSPF routers and interfaces as well as
variable-length subnetting. This appendix describes parameter settings for Router
1 through Router 6. Routers W through Z and A through D are included on the
network map for completion.
In the configuration in
Figure E-1:
• The OSPF Area Authentication parameter is set to none for all areas.
• All Timer parameter values are left at their defaults (Hello, Dead, and Poll
Interval).
• No virtual links are configured.
• Route summarization is not used.
• The Frame Relay cloud is set to the default management type. It is non-fully
meshed with all Group Mode PVCs.
• There are three area border routers (Router 2, Router 3, and Router 4), two
internal backbone routers (Router 1 and Router 5) and one AS boundary
router (Router 6 has an Ethernet interface using RIP).
• R2 is the designated router for the FDDI segment. Router 4 must be the
designated router for the Frame Relay cloud.
• The unnumbered LAN connecting Router 6 and Router D is included to
ensure that every internal node in Area 0.0.0.1 is reachable from every other
internal node.
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