[Driftstörning] Network maintenance 14/7 - 22/7

[Göran Bengtson]

We will upgrade the software on most of our core switches/routers.
This will in most cases cause network downtime.

The plan is as follows:

  o	On Monday July 14th.  core1-gw.chalmers.se. This will cause loss
 	of redundancy to internet but will not cause any immediate service
 	disruption.

  o	On Tuestday July 15th. core2-gw.chalmers.se. The same impact as for
 	the previous router.

  o	On Wednesday July 16th. a-v-gw.chalmers.se. This will cause
 	a network downtime of ca. 5 minutes for the Civil Engineerings
 	and Architecture buildings.

  o	On Monday July 21th. ed-m-gw.chalmers.se followed by
 	chl-gw.chalmers.se.
 	The first will case a network downtime of ca. 5 minutes for the
 	ED-building, AoS in the central administration building, Onsala
 	Space Observatory (the department network, not the telescope networks),
 	the M-building, the HA-HC buildings, the M-departments in the
 	Architechture building and the Student Union.
 	The second will cause a a network downtime of ca. 5 minutes for
 	the entire Campus Lindholmen,

  o	On Tuesday July 22nd. mc-a308-gw.chalmers.se followed by
 	l-1119c-gw.chalmers.se.
 	The first will case a network downtime for all physics
 	and Chemistry departments and for MC2.
 	The second till case a network downtime of ca. 5 minutes for
 	the buildings at Vasa, Chalmersska huset, Hammarkullen, C3SE.
 	CTP, Installationsteknik at SP. the Library.nd the mathematics department.

The maintenance will start ca. 17:00.  When more than one router/switch is
involved, the maintenance for the second will start ca. 17:30.
Other organisations than those mentioned above may be affected.
Both Ethernet and WiFi are affected by the maintenance.

 				/ Göran Bengtson
 				  ITService/Nät