Network Outage Due to Network Equipment Upgrade in Building No.11, Kioizaka Building, Krupp Hall, Machine Hall, Hoffman Hall, Gymnasium, and Power Station (Dec.13)

On Saturday, December 13, 2025, network equipment upgrades will be carried out in the following buildings on Yotsuya Campus: Building No.11, Kioizaka Building, Krupp Hall, Machine Hall, Hoffman Hall, Gymnasium, and Power Station.

We apologize for any inconvenience this may cause and appreciate your understanding and cooperation.
Note: For university-wide events or reservations made prior to this announcement we will proceed with consideration for your usage.

【Details】
Replacement of network switches

【Affected Buildings】
　・Building No.11
　・Kioizaka Building
　・Krupp Hall
　・Machine Hall (excluding COM-X)
　・Hoffman Hall
　・Gymnasium
　・Power Station

【Date】
Saturday, December 13, 2025, 8:00 AM – 8:00 PM

【Impact】
Both wired LAN (Academic and Research Network/Administrative Network) and wireless LAN (sophiawifi2019, eduroam, administrative networks) will be unavailable.
*Each building will experience approximately 4 hours of network downtime.
*If you need to use the network, please do so in buildings not affected by the work.

Information