Hi,
I have the following situation. I have two dhcp servers if failover relationship. One is main and other is hot standby. Lets imagine that I have only one scope configured for failover. My scope is configured in following way:
I assign IP addresses only by using reservations. So I have exclusion set for all of the scope range and I have a lot of reservations.
My question would be - what would be the recommendations for MCLT and State Switchover Interval times? Now I've set 5 and 30 minutes for these options. Addresses reserved for standby server are set to 0%.
I sniffed network and saw the following behavior:
When main server went offline, stanby server changed to communication interrupted state. Client renewed lease and lease duration was equal to MCLT time. After 30 minutes standby server went to partner down state. Client renewed lease and its time was MCLT time. Is it expected thing? Did I understand right that standby server can issue leases which times are equal only to MCLT time and not for the full lease time?