Question

On a service provider aggregation segment, four OSPF routers connect to the same Ethernet broadcast network. R1 has interface priority 0, R2 has priority 5, R3 has priority 10, and R4 has priority 10. R3 booted first, followed by R4, then R2, then R1. After the network stabilizes, which router originates the Type 2 (Network) LSA for this segment, and why?

Accepted Answer

R3, because with equal highest priority (10) the router that became DR first retains the role and originates the Type 2 LSA

Answer

R4, because among the priority-10 routers it has the numerically higher Router ID and always wins the DR election

Answer

R1, because a priority of 0 forces it to become DR and generate the Network LSA on behalf of the segment

Answer

R2, because a lower non-zero priority is preferred to reduce load on the highest-priority routers