On Wednesday July 6th, from 5:00am - 7:30am, ITS will be performing network maintenance on switches located at CAC (Centre for Advanced Computing - formerly known as HPCVL). This work will disrupt access to two production systems - IPAM and the Active Directory Domain Controller Spring.AD.queensu.ca. Users of IPAM will not be able to log in during this time. Active Directory users should not be affected as there are 3 other Domain Controllers on campus.