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IRIS

Instructional & Research Information Systems

Wired Networking

Wired network service

Network firmware upgrades, Sutardja Dai

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During this scheduled outage, firmware will be upgraded on each of 3 switches serving the main building in Sutardja Dai Hall. Each switch will be offline for approximately 5 minutes as it is rebooted. The updated code has better features for detecting and mitigating remote loops introduced by users. This will enable us to prevent future disruptions like the one experienced last Wednesday.

AirBears service throughout EECS will be disrupted during one of the reboots.

Resolved as of 2010-11-30 07:12:00

Network core maintenance

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I will be replacing two 10Gbit line cards in the Soda Hall core router. I will replace one card today, and one tomorrow.

We’ve already replaced similar line cards in the EECS border and Cory Hall routers without incident. The Soda router reconfiguration is slightly more complex, but due to redundant connections and routing, no discernible connectivity disruption is expected.

The vendor confirmed that the current line cards contain faulty hardware and provided replacements. The IRIS network suffered several outages due to this bug, which typically only appears after 6-9 months of operation.

Resolved as of 2010-06-04 11:30:00

6th floor Soda switch replacment

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Due to a power supply failure, I will be replacing one of the stacked switches which serves the 6th Floor of Soda Hall. The switch is currently operating only on an external redundant power supply.

The outage will definitely affect half of the connections on the 6th floor for about 20 minutes; if a full stack reboot is required (likely) the rest of the 6th floor connections, including wireless, will be briefly disrupted.

Resolved as of 2010-04-29 07:40:00

Services Impacted by Cory Power Outage

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As previously announced via email, Cory Hall is scheduled for a power outage on March 22nd:

> Cory Hall Occupants,
>
> In order to perform maintenance on the main Cory Hall power
> transformers, Campus Physical Plant has scheduled a building-wide power
> shutdown during spring break on Monday, 3-22-10. The power to the
> building will be shutdown from 8am-8pm.
>
> For safety reasons, building Access will be prohibited (cardkey system
> disabled) from 11:50pm Sunday, 3-21-10 to 8pm Monday, 3-22-10.
>
> In preparation for the shutdown, please be sure to power off and unplug
> all electrical equipment in your workspace prior to leaving for Spring
> Break. (Electrical equipment includes computers, monitors, heaters &
> fans. Unplug power strips!).
>
> Please also remember to remove food items from refrigerators prior to
> leaving for Spring Break.
>
> Finally, make sure all doors are locked and windows are closed.

This outage will affect various servers in Cory Hall, including the EECS Exchange servers FONTUS and OWA; some Instructional servers (see http://inst.eecs.berkeley.edu/notices.html#spring-break); and license service for Cadence and Synopsys licenses.

All Cory Hall networking will be down during the power outage.

Exchange service should be restored by late Monday evening, after power is restored. All remaining services should be back online by midday Tuesday.

[Read more…] about Services Impacted by Cory Power Outage

Network Maintenance for Edge Router

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Due to IPmc errors on 10G4x module and it requires to reboot this module on edge router in order to fix the issue.

The edge router is the device for all incoming/outgoing EECS network traffic to campus network. We will schedule network maintenance window between 8:00AM to 9:00AM on Jan 21(Thursday) and use this time for rebooting and troubleshooting the issue. If everything goes ok, you will not experience network outage.

If you have any concerns, please contact with help@eecs or networks@eecs
[Read more…] about Network Maintenance for Edge Router

Router changes

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I will be disabling several 1Gbit Ethernet links between EECS and campus and Millennium and campus at 0830 on Friday. The traffic was previously migrated to 10Gbit links.

This is stage 2 of the EECS border upgrade project.

During the same maintenance window, I will be installing new line cards into the Soda Hall core router.

This is in preparation for upgrading the edge switches in Soda Hall.

No disruption is expected from either change.

(This work was completed without incident.)

Resolved as of 2009-11-20 09:04:00