[Driftstörning] Emergency network management.

[Göran Bengtson]

We must upgrade the software in our central network equipment.

The work will start at 17:30 on the following dates, and is expected to
end within 2 hours. The network downtime is expected to be 5-10 minutes.
LAN as well as WiFi is affected.

Thursday October 5th.
 	Router ed-m-gw causing service downtime for the ED and M buildings,
 		Hörsalarna, HSB Living Lab, Onsala Space Observatory and
 		the Student union.  The evacuated CA-building (at
 		Chalmersplatsen) is also affected.

 	Router sb-0246-gw causing downtime for the SB building (incl. VoV2),
 	the Chalmers LAN and WiFi in the student union building (including
 	Runan), and the J51 building (black building) at Johanneberg Science
 	Park.  This work will start at 18:15.

Tuesday October 10th.
 	Router chl-gw, causing downtime for the entire campus Lindholmen.

 	Router l-1119c-gw, causing downtime for the Mathematical Sciences
 	buildings, the main library at campus Johanneberg, the buildings at
 	Vasa, C3SE, and the Chalmers-connected networks at CTP.

 	Router mc-a308-gw, causing downtime for the Physics buildings, the
 	Chemistry buildings, and MC2.

Wednesday October 11th.
 	Router hall-gw. The central computer center is affected, but most
 	systems have redundant connections. If no unexpected  problems occur,
 	the service impact will be small. In case of problems most services
 	at Chalmers will be affected to some degree. This maintenance may
 	take longer than 2 hours.

Thursday October 12th.
 	Router wlan2-gw. All WiFi at Chalmers, and NOMAD at LAN are at
 	risk. However, all services are redundant, so the service impact
 	is expected to  be small. In case of problems, the services will
 	be affected.

 			/ Göran Bengtson
 			  IT-Services