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Effects of the campus network failure (restored)

News

A failure in the Campus network of the University of Tokyo occurred approximately between 8:30 am and 9:41 am on September 7. Due to this failure, network connection interruption within on-campus as well as between on- and off-campus occurred somewhere between a few seconds to a few minutes. (reference-accessible only on-campus:UTNET Network failure occurred around 8：40am on Friday September 7)

As a result of this failure, we have confirmed that ECCS, ITC-LMS and MailHosting services were affected as follows.

• Failure to send/receive emails through accessing the ECCS Staff Email/MailHosting service's mail server (using both the mail client and Webmail).
  However, no problems were detected with accessing the ECCS Cloud Email from off-campus.
• Delay in sending/receiving emails.
• Unable to access ECCS-related web servers (announcement www server, secure www server, lecture www server, WebDAV server) and ITC LMS server.
• Slow performance on the ECCS terminals, and inability to access off-campus servers.
• Interrupted connections to ECCS wired LAN.
• Slow performance, or total inability to use the Remote Access Environment.
  

We apologize to all users for any inconveniences this may have caused you.