Enterprise Network Modification
Enterprise IT Systems Engineering, in cooperation with Data Centers Services and Enterprise Networking and Communication Services, will be reconfiguring several enterprise networks in order to place them behind Data Center firewalls. The first tests of the new configuration will be on August 8 and 9 during the maintenance window from 5:00 to 7:00 a.m. and are not planned to extend beyond 6:30 a.m. on either day. Assuming the tests are successful and approved, the production change would be implemented in mid-August (8/14) prior to student arrival.
The complexity and potential impact of these changes are significant; simulation and testing should prevent major disruptions, however, some service interruption is expected. In order to mitigate this, teams from Systems Engineering and Data Center Services will be working with on-site engineering support from the firewall vendor to quickly resolve issues as they are identified during and after the change. Critical services and systems that could be impacted include: WebAccess, Shibboleth, UCS, WebMail/email, TSM, PASS NFS, Wireless, and LDAP.
Services that maintain persistent connections may experience session timeouts and/or stale connections. PASS mounted via NFS and the TSM scheduler are both known to experience this issue. TSM users should upgrade to the latest client, if possible.
We appreciate your patience and assistance as we work to improve security and reliability of services in Enterprise IT. This change is being tracked via CHG0043208.