When a router undergoes the exchange protocol within OSPF, in what order does it pass through each state?
Click on the arrows to vote for the correct answerA. B. C. D.
The correct answer is A. exstart state > loading state > exchange state > full state.
When a router undergoes the exchange protocol within OSPF (Open Shortest Path First), it passes through four different states. These states are:
exstart state: In this state, the two routers that are trying to establish an adjacency agree on their router IDs and exchange their initial sequence numbers.
exchange state: In this state, the routers exchange database description packets (DBDs) that contain information about their LSAs (Link State Advertisements).
loading state: In this state, the router that received the DBD packets requests the missing LSAs from the other router and begins receiving them.
full state: In this state, the routers have exchanged all of their LSAs and have established a complete OSPF database. They can now forward traffic through their network.
So, the correct order in which a router passes through each state during the OSPF exchange protocol is exstart state > loading state > exchange state > full state, which is option A.