Ran into something in Parkhurst's OSPF book while studying tonight. Looking for validation of my observation.
The example: OSPF over frame relay The topology: hub and spoke, with a twist. The hub uses subinterfaces ( one to each spoke router ) and the spokes use physical interfaces. Now, the Parkhurst examples show leaving the physical interfaces as ospf type non-broadcast, change the ospf timers on the subinterfaces, place neighbor statements on the spoke routers ( physical interfaces ) and all is well. Except I don't believe it works this way. The subinterfaces are point-to-point networks, and expect the other side to be a point-to-point connection and adjacency. the physical interfaces are non-broadcast, and expect DR elections to occur, something the router with the subinterfaces will not do. I believe the correct solution is to make the physical interfaces ospf type point-to-multipoint. An alternative is to change the physical interfaces to ospf point-to-point. In any case - can anyone else verify what I see and do not see - that Parkhurst chapter 11, example 3, pages 275-279 answer is incomplete? thanks. -- TANSTAAFL "there ain't no such thing as a free lunch" Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=65532&t=65532 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
