Purpose: Segra is performing a software upgrade.

Impact: Hard down for approximately 30 minutes with multiple switch hits.

Affected: Feed to MUGC - Segra Circuit - 61.DATA.102080.1.CFW

Purpose: Applying the SfB Cu11 hotfix 1 to our Skype for Business Server environment. Changes and Fixes are listed here: https://support.microsoft.com/en-us/help/3061064/updates-for-skype-for-business-server-2015

Impact: Due to the redundant nature of our SfB environment, no services should be impacted.

Affected: Skype for Business and associated endpoints.

Purpose: Applying Exchange Server 2016 CU18 to our on-prem Exchange environment.

Impact: Due to the redundant nature of our on-prem Exchange Server environment, services should not be impacted.

Affected: All on-prem Exchange 2016 Servers.