OSPF Point-to-Multipoint Non-Broadcast Network Type over Frame-Relay

[lagapidis (Lazarus Agapidis)]

Hello Zacarias

@znhancune

• What are the possible combinations of OSPF Network types? I mean, if on one router interface I use non-broadcast ospf network type I can use non-broadcast ospf network type on another router but what more combinations?

You must use the same network type on OSPF routers that become neighbors. This is because each network type changes the way that neighbors are created, and how (and if) DR/BDRs are elected.

For typical cases where the various network types are used, take a look at this post which should answer most of your questions.

OSPF Non-Broadcast Network Type over Frame-Relay

Hello Muhammad OSFP network types are a special case of OSPF implementation. They are used in order to accommodate specific technologies such as frame relay. It is for this reason that they are only described after the main topic of OSPF. In any case, the reason they exist is that technologies such as frame relay cannot support broadcast and multi access infrastructure, which are prerequisites for normal OSPF functionality. The various types of networks are used to allow OSPF to have DR and…

Finally, EIGRP can be configured for frame relay, with some special configurations. Take a look at this lesson to find out about these scenarios.

EIGRP over Frame-Relay

I hope this has been helpful!

Laz