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OSPF Network Types

03/05/2012 By Andrew Roderos Leave a Comment

OSPF behavior using different interface types.

Interface TypeUses DR/BDR?Default
Hello
Interval
Requires a
neighbor
Command?
More than Two
Hosts Allowed
in the Subnet?
BroadcastYes10NoYes
Point-to-point 1No10NoNo
Nonbroadcast 2 (NBMA)Yes30YesYes
Point-to-multipointNo30NoYes
Point-to-multipoint nonbroadcastNo30YesYes
LoopbackNo——No

1 Default on Frame Relay point-to-point subinterfaces.
2 Default on Frame Relay physical and multipoint subinterfaces.

Reference

CCIE Routing and Switching Certification Guide 4th Edition

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Filed Under: Routing Tagged With: Cisco

About Andrew Roderos

I am a network security engineer with a passion for networking and security. Follow me on Twitter, LinkedIn, and Instagram.

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