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Network Outage due to Emergency Maintenance of Core Network Equipment (Jan. 22)

January 22, 2022
To Users
Information Technology Center, Keio University
Network Outage due to Emergency Maintenance of Core Network Equipment (Jan. 22)


There was a network outage as follows, but it has been restored now.


[Network outage due to emergency maintenance on the backbone network]

Date and time: Saturday, January 22, 2022, from 7:00 a.m. to 9:40 a.m.
Description: Partial network outage due to failure of core network equipment
Cause: Complex failure (faulty routing information) in the core network equipment
Main affected area:
  • Office network
  • Mediacenter system network
  • Wireless systems (keiomobile2, eduroam)
  • Osaka City Campus (KORC)


We apologize for any inconvenience this may cause for a long time.

Last-Modified: January 22, 2022

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