OSPF Router-id Change

Hi All

We are in a process of re-addressing the loopback IPs of routers/core switches.. I have the OSPF router-id associated with each device, which would need to be changed, post loopback re-addressing.. After I re-address the loopback, and enable routing for this new loopback, We were planning to do the following:

router ospf 100
no router-id 192.168.1.1
router-id 172.16.1.1 (new loopback IP)

Will I loose remote telnet connectivity, when I do this change? Since there are dual routers/switches, we are making sure we come through the other router, to make sure we dont connectivity to router, but:

1) what will happen when i change the ospf router-id? Will it automatically reset the OSPF neighbors, or should we do it manually?

2) Should we also clear the OSPF process for the new router ID to be effective?

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