I recently came across a scenario where the requirement was to run OSPF over a frame-relay network. Normally this would represent a straightforward routing configuration. As ever with the CCIE the interesting part was that no broadcast keywords had been placed on the frame-relay map statements, and none were allowed.
If there are no broadcast capabilities on the underlying network this is not necessarily a problem for OSPF as long as a suitable OSPF non-broadcast network type is chosen.
I set the ospf network type to 'non-broadcast' and then 'point-to-multipoint non-broadcast' and these worked fine as long as the required neighbor statement was configured on the hub router.
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