OSPF - ROUTER ID

In this video we analyze the function of the router-id in OSPF, why is a key element in the SPF calculations, its role on the LSA advertisements and what may happen if we found the same router-id on two devices not directly connected

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Video Description

OSPF - Router-id
Must be unique
Identifies the router on the topology (Link-State Database)
Used for the SPF calculation
The LSAs have the router-id of the device generating them. LSAs aren't accepted if the router-id is equal to the one on the receiving device.
Adjacencies aren't established if neighbor has the same router-id
Floodwar: It happens when more than one device has the same router-id

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Global

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