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Scheduled Service Change: Migrate DHCP Services To New DHCP Infrastructure - All Campuses

Event:
2025-04-01 05:00:00
Expected Duration:
2025-04-01 07:00:00
Status:
Closed
Brief Description:
On Tuesday, April 1 between 5am and 7am ET, CIT Network Services will move all Cornell wired networks to new DHCP server infrastructure. This includes all networks on the Ithaca, Geneva, and NY Tech campuses.
User Impact:
During this window the DHCP service will be intermittently unavailable. Client devices attempting to obtain or renew DHCP leases during the times the DHCP service is unavailable will fail to obtain an IP address. Once the DHCP service is restored, client devices will be able to obtain or renew DHCP leases, as usual. DHCP lease states will be copied over to the new servers to minimize disruptions.
Services Affected:
Network
Full Description:
On Tuesday, April 1, between 5am and 7am ET, CIT Network Services will move all Cornell wired networks to new DHCP server infrastructure. 

  • This includes all networks on the Ithaca, Geneva, and NY Tech campuses. 
  • This includes all remote sites connected to the Cornell network. 
  • In addition, wireless networks at NY Tech and other remote sites are in scope. 
  • Any network that leverages Cornell IP address space is in scope with the exceptions of CIT's Managed Server service and 10-space networks in AWS and Azure. 
During this window the DHCP service will be intermittently unavailable. Client devices attempting to obtain or renew DHCP leases during the times the DHCP service is unavailable will fail to obtain an IP address. Once the DHCP service is restored, client devices will be able to obtain or renew DHCP leases, as usual. DHCP lease states will be copied over to the new servers to minimize disruptions.
CIT TDX ID:
1733226


Timeline of Changes

Description Current Status Date Time
On Tuesday, April 1, between 5am and 7am ET, CIT Network Services will move all Cornell wired networks to new DHCP server infrastructure. 

  • This includes all networks on the Ithaca, Geneva, and NY Tech campuses. 
  • This includes all remote sites connected to the Cornell network. 
  • In addition, wireless networks at NY Tech and other remote sites are in scope. 
  • Any network that leverages Cornell IP address space is in scope with the exceptions of CIT's Managed Server service and 10-space networks in AWS and Azure. 
During this window the DHCP service will be intermittently unavailable. Client devices attempting to obtain or renew DHCP leases during the times the DHCP service is unavailable will fail to obtain an IP address. Once the DHCP service is restored, client devices will be able to obtain or renew DHCP leases, as usual. DHCP lease states will be copied over to the new servers to minimize disruptions.
 2025-03-27 10:37:01