Question

Arrange the OSPF neighbor states in the correct order:

a. 2-Way
b. Down
c. Exchange
d. Exstart
e. Full
f. Init
g. Loading

Answer 1

The correct order of OSPF neighbor states is: Down, Init, 2-Way, Exstart, Exchange, Loading, Full.

Step-by-step explanation:

1. Down: This state indicates that the OSPF neighbor is unreachable or has failed.
2. Init: In this state, the OSPF neighbors establish a communication channel by exchanging hello packets.
3. 2-Way: In this state, the OSPF neighbors have agreed on common parameters and can exchange database description packets.
4. Exstart: In this state, one OSPF neighbor acts as the master and initiates the process of exchanging link-state advertisements (LSAs).
5. Exchange: In this state, OSPF neighbors exchange database description packets for synchronization.
6. Loading: In this state, OSPF neighbors request and receive specific LSAs to build their link-state database.
7. Full: This is the final state, where the OSPF neighbors have synchronized their link-state databases and are fully adjacent, able to forward OSPF packets to each other.