On Saturday April 19th at midnight until Sunday April 20th at 6:00am Network Operations will be upgrading the main core router. During this time the router will be shut down affecting the following services: - all Internet access - all Glendon access - rossc0 subnet .218 - rossnII0 subnet .194 - ccsnoc0 subnet .168 - petrie0 subnet .232 - telecom0 subnet .144 - rosss0 subnet .216 - atkinsontowerII0 subnet .220 - ccsi0 subnet .237 - steacie-sci0 subnet .166 - scottpub0 subnet .176 - CCS Backbone FDDI - CCS Machine Room FDDI - rossn0.swx subnet .214 - scott0.swx subnet .180 - eob0.swx subnet .235, .245