2020/07/07　About clerical network failure （Recovered）

We are sorry for the clerical network failure at the following time and date. We apologize for any inconvenience this may cause you.

Date of the failure
2020/7/7 15:40～16:07

Affected service
The services using clerical network

Situation
Communication from the clerical network to the university or the Internet was not possible.

Cause
Due to happenning the failure of exchanging network route information between clerical network router and its firewall, exchanging network route information is unavailable, and unable to communicate. It was recovered with switching the Active-Standby of the firewall, but this failure may be caused by software of router or it of firewall because failure phenomenon is not happen with switching Active-Standby of the firewall to the same position that the failure happens. The root cause of the failure is under investigation.