[Driftstörning]Emergency network management.

[Göran Bengtson]

On Mon, 2 Oct 2017, Göran Bengtson wrote:

> From: Göran Bengtson <goeran at chalmers.se>
> To: driftstorning at lists.chalmers.se
> Message-ID: <alpine.LRH.2.21.1710021338450.22617 at olydig.cdg.chalmers.se>
> Date: Mon, 2 Oct 2017 14:36:07 +0200
> Subject: [Driftstörning] Emergency network management.
> 
> 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.

This maintenance is now completed.

>
> 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