In December and January we’ve completed some service migrations, we’ve been auditing some services and some new staff members have joined our team, which makes this a good time to clarify what it means to have a migration completed. Although … Continue reading

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VPN NAT Changes

What is this post about? We are planning to make a minor change to the way our VPNs NAT clients. For those who are interested, this blog post explains why and how we are doing this. Please note that these … Continue reading

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How to generate graphs with gnuplot

Introduction During the JANET Carrrier Ethernet Trial we we took part in, I needed to plot some data based on our testing and came across gnuplot. It is actually quite simple to use and we’re doing so more and more … Continue reading

Posted in Documentation, Productivity, Trend Analysis, Wireless | 1 Comment

OUCS Backbone Network Naming and Numbering Conventions

Introduction This blog post is intended to help ITSS in Oxford to better understand how the centrally provided network fits together with their own local networks. It is also hoped it will assist them in assessing the impact of any … Continue reading

Posted in Backbone Network, Cisco Networks, Documentation, General Maintenance | 1 Comment

More Visio-fu thanks to Etherealmind guy

My recent post about Visio focussed on navigating around the user interface and knowing the content of its toolbox. If you want some great tips for network diagrams, and actually laying stuff out on the page so it’s clear, check … Continue reading

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Update to our IPv6 Allocation Scheme

After gaining some experience in configuring IPv6 networks, and also receiving feedback from others, I’ve revised our IPv6 Allocation Scheme. This is the document which lays out how we intend to allocate networks to departments and colleges, and other services … Continue reading

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Visio 2007 Tips and Tricks

Recently I decided to up my Visio-fu, and also to settle on a set of standard templates and shapes for my network diagrams. A quick browse around Safari Books Online turned up three Visio tomes, so on a quiet weekend … Continue reading

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Visitor Network account lifetime

Several comments on my recent post about updates to the Visitor Network Account Management tool requested an increase of the maximum account lifetime. Whilst this is more of a policy change than a feature update to the tool, and hence … Continue reading

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Special-use IPv4 addresses and domains

You’ve probably heard of RFC1918 – the well-known set of networks assigned for use in off-Internet, private networks. In fact there’s a much more useful RFC, one which lists not only these but a group of other networks and subnets … Continue reading

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