There are 2 key timers in DHCP leases:
T1 – Renewal Timer
• 50% of lease time
• Client sends unicast DHCPREQUEST to server to renew the DHCP lease
• Either gets a response or continues to send unicast DHCPREQUEST periodically
T2 – Rebind Timer
• ⅞ths or 87.5% of the lease time
• Client sends broadcast DHCPREQUEST to renew the lease
Tech Junction Answered question May 17, 2023