Author Archives: maj1

Remote backups resumed

The regular remote backups that were suspended on 30th January have now resumed. In particular home directories are now up to date on the remote server and should continue to be backed up hourly. Some snapshots with non-standard names will … Continue reading

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IPv6 address changes

There has recently been a change to the IPv6 address allocations used in the University, though at present this affects relatively few people. The reason for the change is that the original allocation to Cambridge was not thought to be … Continue reading

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Problem with remote backups

Since the morning of Monday 30th January, we have had a problem with the offsite backup system; a number of filesystems, including the one containing user home directories, are not being copied to the offsite server. The problem began when … Continue reading

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Network problem 2011-11-25

There was a major problem with the CL internal network during the afternoon of Friday 25th November, believed to have been caused by a faulty switch. There were a number of consequential side effects on other systems, which we now … Continue reading

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Wireless network replacement – phase 2 complete

Phase 2 of the wireless network replacement is now complete, adding a number of mid-corridor access points. No further expansion is currently planned. Filling in any remaining dead spots should be technically straightforward, but will incur an additional cost.

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Phone outage Thursday 28th July

The Computing Service send their apologies for the telephone system outage this morning. A small and fairly routine reconfiguration was made to the West Cambridge routers during this morning’s CUDN vulnerable period, ironically with the ultimate goal of improving network … Continue reading

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Wireless network replacement – phase 1 complete

The initial phase of the replacement wireless network installation is now complete. All of the old access points have been decommissioned, and 24 Aruba access points have been installed. We now intend to assess the coverage before deciding whether to … Continue reading

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Wireless network replacement

On Monday and Tuesday of next week (18th/19th July) the long awaited upgrade of the wireless network in the building will take place. There will be disruption to wireless access as old access points are replaced with new, but I … Continue reading

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Web server changes

Two small changes have been made to the Lab web server that may break some existing web pages, in particular those using other character encodings than UTF-8. The first is intended to improve rendering of Lab pages in Internet Explorer … Continue reading

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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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