In OSPF (Open Shortest Path First), routers can have different roles: Designated Router (DR), Backup Designated Router (BDR), and DROther. These roles help manage and optimize the OSPF network traffic.
DR and BDR are elected to minimize the number of adjacencies and reduce the amount of routing information exchange.
DROther routers are neither DR nor BDR but can still participate in the OSPF network by maintaining adjacencies with DR and BDR.
Analyzing the Exhibit:
The exhibit shows the OSPF neighbor states for the local FortiGate.
Neighbor ID 0.0.0.1 is in the state Full/DR (Designated Router).
Neighbor ID 0.0.0.3 is in the state Full/DROther (DROther).
Neighbor ID 0.0.0.10 has no specific designation, implying it is neither DR nor BDR.
Conclusion:
Since the local FortiGate shows neighbors in Full/DR and Full/DROther states and itself does not have a state of DROther, it can be concluded that the local FortiGate is not a DROther.
References:
Fortinet Community: Understanding OSPF roles and states(Welcome to the Fortinet Community!)(cyruslab).
Fortinet Documentation: OSPF neighbor states and elections(Fortinet Docs).
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