DR and BDR selection Lab

 #ospf #protocol #configuration #lab #DR #BDR

Lab objectives:

Ensure router R1 is the DR for network 100.1.1.0 /24.

Ensure router R3 is the BDR for network 100.1.1.0 /24.

Ensure router R5 is the DR for network 100.1.2.0 /24. without changing the priority

Ensure router R2 is the BDR for network 100.1.2.0 /24. You are not allowed to change the priority.

Solution configurations:

R1:

conf t

int fa 0/0

ip address 100.1.1.2 255.255.255.0

no shutdown

exit

router ospf 10

network 100.1.1.0 0.0.0.255 area 0

network 100.1.2.0 0.0.0.255 area 0

log-adjacency-changes

conf t

router ospf 10

log-adjacency-changes

exit

exit

R2:

the solution to achieve all objectives:

change priority of R1 must be higher than R3

change priority of R2 must be lower than R1

change router-id manually to higher router ID 120.120.120.2