1. During this OSPF state on multiaccess networks, the routers elect a Designated Router (DR) and a Backup Designated Router (BDR).
- Down State
- Init State
- Two-Way State
- ExStart State
- Exchange State
- Loading State
- Full State
Explanation: In the Two-Way State on multiaccess networks, the routers elect a Designated Router (DR) and a Backup Designated Router (BDR).
2. During this OSPF state, routers send each other DBD packets.
- Down State
- Init State
- Two-Way State
- ExStart State
- Exchange State
- Loading State
- Full State
Explanation: In the Exchange State, routers send each other DBD packets.
3. An OSPF router enters this state when it has received a Hello packet from a neighbor, containing the sending Router ID.
- Down State
- Init State
- Two-Way State
- ExStart State
- Exchange State
- Loading State
- Full State
Explanation: In the Init State, Hello packets are received from neighbors, containing the sending Router ID.
4. During this OSPF state on point-to-point networks, the routers decide which router initiates the exchange of DBD packets.
- Down State
- Init State
- Two-Way State
- ExStart State
- Exchange State
- Loading State
- Full State
Explanation: In the ExStart State on point-to-point networks, the routers decide which router initiates the exchange of DBD packets.
5. During this OSPF state, routers have converged link-state databases.
- Down State
- Init State
- Two-Way State
- ExStart State
- Exchange State
- Loading State
- Full State
Explanation: In the Full State, routers have converged.
6. During this OSPF state, no Hello packets are received.
- Down State
- Init State
- Two-Way State
- ExStart State
- Exchange State
- Loading State
- Full State
Explanation: In the Down State, no Hello packets are received.
7. During this OSPF state, routes are processed using the SPF algorithm.
- Down State
- Init State
- Two-Way State
- ExStart State
- Exchange State
- Loading State
- Full State
Explanation: In the Loading State, routes are processed using the SPF algorithm.
cau 7. full state