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Ticket 20090401_3

Ticket Number: 20090401_3Ticket State: CLOSED
Ticket Opened: 2009-04-01 16:42Ticket Closed: 2009-04-03 10:38
Ticket Description: Scheduled memory upgrade swiWI1 and swiWI2
Scheduled Starttime: Scheduled Endtime:

Problem Description:

On Thursday, April 2nd, 2009 between 20:45 and 22:00 we will upgrade the memory of our routers swiWI1 and swiWI2.
During the upgrade the devices will be unreachable for about 15-20 minutes.
The upgrade will be done sequentially and redundancy allows a seamless upgrade with no expected impact on internet connectivity for ZHAW.
Redundancy for PHTG will be reduced during the upgrades.
Overall, no impact on Internet connectivity is expected.

Affected:

From 2009-04-02 20:45 until 2009-04-02 22:00
Impact: no more redundancy
Sites/Services: PHTG


From 2009-04-02 20:45 until 2009-04-02 22:00
Impact: no more redundancy
Sites/Services: ZHAW


Actions:


2009-04-02 21:54
Router WI1 is back online with 1GB of RAM.
BGP sessions are re-established and redundancy recovered.


2009-04-02 21:44
BGP session from WI1 to ZHAW is shut down.
WI1 is powered off and memory exchanged.


2009-04-02 21:16
Router WI2 is back online with 1GB of RAM.
BGP sessions are re-established and the primary data path is via WI2 again.

2009-04-02 21:01
BGP session from WI2 to ZHAW is teared down.
Router WI2 is shutdown and memory exchanged.
Traffic is re-routed over WI1.


2009-04-02 17:00
Disabled Nagios monitoring for swiWI1 and swiWI2 on April 2nd 2009, between 20:45 and 22:00



For all questions about this ticket, please send mail to noc@switch.ch
or call +41 44 268 15 30.