During the Tuesday, May 5th maintenance window, maintenance work affecting a number of services will occur, starting at 5:30 PM and being completed before midnight. The following will occur:
  • Distribution routers: software on distribution routers for the west, north, hill and off-campus sectors will be updated. In most buildings, this will result in a network outage (including IP telephony) of approximately 15 minutes.
  • DNS/DHCP/NTP servers: software on the two servers which provide the DNS resolution, DHCP and NTP services will be updated, resulting in outages of up to an hour per server. You may notice that network applications respond slower than usual during those times when the DNS server which is your PC's primary DNS resolver is unavailable. DNS queries will be answered by the secondary DNS resolver, but only once the request to your PC's primary DNS resolver has timed-out.
  • Server software updates: software on the servers which provide the following services will be updated, resulting in outages of up to 15 minutes per server:
    • RT
    • Web proxies
    • Registration system
    • Incoming e-mail
    • Outgoing e-mail
    • E-mail mailboxes
    • Webmail
    • Mailing lists
    • SMS
    • Apple Software Update Server
    • Provisioning (web proxy autodiscovery, telephone provisioning)
    • Wi-Fi and VPN authentication
    • CHERTL Evaluation Assistant
    • Network graphs
    • Guest network access
    • Network monitoring
    • RU Single Sign-on
    • Terminal Four content management system
  • VPN service: software on the router which provides VPN services will be updated. An outage of up to an hour is expected.
  • Core and edge routers: software on one of the core routers and one of the edge routers will be updated. As each one operates within a redundant pair, no noticeable outages are expected during this maintenance.
  • Firewalls: software on the firewalls which connect the Internet to the campus, SEALS and public networks will be updated. As the firewalls operate as a redundant pair, no noticeable outages are expected during this maintenance.
This maintenance work is being undertaken in the ITSC-approved scheduled maintenance window. More information about maintenance windows and maintenance periods.