While the University is closed for the Christmas break, Network Operations will be carrying out annual preventative maintenance tasks, as well as certain software upgrades to the data network. This work will result in some interruption to network services, including Internet access during the times and dates outlined below. December 27: 09:00-17:00 hours - During this period NetOps will be performing preventative maintenance that may result in brief interruptions in network services at the Keele and Glendon campuses. December 28: 09:00-17:00 hours - During this period NetOps will be performing preventative maintenance that may result in brief interruptions in network services at the Keele and Glendon campuses. 12:00-12:30 hours - NetOps will be carrying out software upgrades to network equipment at the Glendon Campus. All network services at Glendon will be affected during this period. December 29: 09:00-17:00 hours - NetOps will be performing preventative maintenance, as well as software upgrades to network equipment at the Keele and Glendon campuses. This work will result in several interruptions of various lengths. 06:00-20:00 - In order to ensure that certain central computing and information services will not be negatively impacted by the interruptions in network services, CNS will be shutting down these services prior to the work on the network. These services will remain off-line until the network maintenance is completed. Notifications about these outages will be distributed separately to affected groups on campus.