Author Archives: maj1

Network flood

A traffic flood from a research group machine caused some network performance problems between sometime in the small hours of Thursday 2nd December and about 09:40 when the source was identified and disconnected. Our use of VLANs to separate traffic … Continue reading

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“wgb” wireless network

The “wgb” wireless network is running very slowly at the moment and is congested. The reason for this is that the ADSL connectivity that lies behind it has been capped at 128kbit/s because of excessive usage under Demon’s fair usage … Continue reading

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Network switch failure

A network switch providing connections in the north east corner of the first floor failed shortly after 04:00 this morning (2010-10-21). It is one of two switches in the wiring closet so some machines and telephones in the area would … Continue reading

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Caller ID presentation on Lab phones

The new University phone system has the ability to present “caller id” on external phone calls as the actual DDI number of the phone, rather than the generic university switchboard number. This makes it easier for people to call you … Continue reading

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Wireless network migration plans

This is a status report on the planned upgrade to the wireless network, and a request for testing and feedback on the migration strategy. The original plan was that the new wireless system would offer all of the networks that … Continue reading

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Eduroam

I have received a couple of samples of the new wireless access points that we intend to install over the summer. I have placed one of them so that it should provide some Eduroam coverage to the Street area. The … Continue reading

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Filer problems May bank holiday weekend

Between sometime in the evening of Sunday 30th May and early morning on Tuesday 1st June the performance of the NetApp filer “elmer” was so badly degraded as to be effectively unusable. The problems affected various services, including the main … Continue reading

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Migrating the filer to a new IP address – second stage

On 22nd February I wrote about the start of a campaign to the migrate the NetApp filer “elmer” to a new IP address. There have been a few hiccups, but by and large the migration has gone smoothly. The vast … Continue reading

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Migrating the filer to a new IP address

We will shortly be making a change to the DNS to change the default IP address that is used to access the main filer, elmer. The motivation for the change is to deal with some security issues that are currently … Continue reading

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Web browser proxy configurations

The Computing Service have recently announced that their web proxy service is to close. We have not recommended use of this service for many years, but there is still some legacy from the time when it was strongly recommended. Part … Continue reading

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