Categories
CCNP Enterprise Core (350-401) Cisco Routing

OSPF Network Types

The default network type in an OSPF network is set by the physical media used. It can be overridden in interface configuration mode with the command ip ospf network

TypeDescriptionDR/BDR field usedTimers
BroadcastDefault in Ethernet networksYesHello: 10
Wait: 40
Dead: 40
Non-broadcastUsed in Frame Relay main or multipoint subinterfacesYesHello: 30
Wait: 120
Dead: 120
Point-to-pointUsed in Frame Relay point to point sub-interfacesNoHello: 10
Wait: 40
Dead: 40
Point-to-multipointNot used by default. Used for hub and spoke topologiesNoHello: 30
Wait: 120
Dead: 120
LoopbackDefault setting used on Loopback interfaces. Only advertises the host route /32NoNone
OSPF Network Types

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.