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84 lines
4.4 KiB
HTML
84 lines
4.4 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<title>CUCC Expedition Handbook: Hut network</title>
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<link rel="stylesheet" type="text/css" href="../css/main2.css" />
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</head>
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<body>
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<h2 id="tophead">CUCC Expedition Handbook</h2>
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<h1>Hut Network Configuration</h1>
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<div align=center>
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<p>If the internet is not working, the <b>first thing to check</b> is that<br>the black WiFi antennae are
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still upright and have not been knocked sideways.
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</div>
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<br>
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<h2>Networking Software - configuration nerding</h2>
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<p>First, make sure you understand the physical cabling:
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<figure align=center >
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<a href="../l/hut-cables.html"><img border=1 src="../t/hut-cables-small.jpg"></a>
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<br><figcaption>Hut Network - click for instructions</figcaption>
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</figure>
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<h2>ALL BEING RE-WRITTEN MARCH 2023</h2>
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<strike>
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<p>The potato hut WiFi is running DHCP and allocating IP addresses of the form 192.168.1.x where x is a number between 11 and 99 .
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<p>The <em>Expo laptops</em> have a dynamic local address of this form, as does any other laptop connecting to this WiFi.
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<p>The Gasthof WiFi - which you can still use - is "StaudnGast" and has no WiFi password but there is a login webpage. It allocates IP addresses in the range
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192.168.2.x etc. The antenna is now on the first-floor balcony within
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sight of the tatty hut window.
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<p>The Acer Aspire One ("tclaspire3") is on a static address <a href="http://192.168.1.100/">192.168.1.100</a> on WiFi but <a href="http://192.168.200.100/">192.168.200.100</a> on the ethernet cable.
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This is the address to use for configuring it using ssh when everything else has failed. So to manage the
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connection to the Gasthof WiFi you would use
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<pre>
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ssh expo@192.168.200.100
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</pre>
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to run Mark Shinwell's script (re-edited by Sam 2019)
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<pre>/root/fakenet/runfakenet
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</pre>
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This used to need running once or twice a day when the internet stops working, but it was radically fettled in 2022 and so should be much more reliable.
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Sometimes you may have to walk over to the blue Acer Aspire netbook and run this script directly by typing on its keyboard
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as the network has collapsed so badly that <span style="font-family:monospace">ssh</span> doesn't work.
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<p>The netbook needs to have its persistent networking set up correctly <i>in addition to the script</i>. This is the
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<b>wicd</b> gui program that has an icon in the top-right of the sceen in the system panel. (Or search in all applications in the Internet section
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for the wicd application). Set the checkboxes so that the netbook does connect to any network except the Staudingast wifi network,
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and also tick the 'automatica;lly reconnect' checkbox for the "StaudnGast" network.
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</strike>
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<h3>Historical Notes</h3>
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<p>Prior to 2018 we used to run an unconnected local network with our own DNS domain
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name "potato.hut", our own server holding all the website and survey data, and published WiFi as SSID "tattyhut".
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Updates to the rest of the world were done by taking an up-to-date laptop which had been in
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the tatty hut to a real internet connection and
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pushing the changes to the distributed version control system on
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<span style="font-family:monospace">expo.survex.com</span> to be merged.
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</p>
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<p>In 2017 the hard-drive on our server died which triggered the general reconfiguration
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to connect the tattyhut to the internet continuously and not to have our own local server. This coincided with
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a much-improved WiFi service at the Gasthof.
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<p>In 2018 and 2019 we had good Internet access at basecamp, but the high-gain system was returned to its owner during Covid.
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<p>In 2022 Wifi reception from the gasthaus was very poor. The connection script was improved so that dropped connections were restored more quickly. However the basic bandwidth with a cheap antenna was not enough.
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<p>In 2023 a new Wifi device (the Alfa) should restore decent connectivity. We hope this will improve everything to how it was in 2019. However this Alfa has proved to be a right bastard to find the right drivers for. Wookey has had to be inventive in using an Ubuntu PPA to make it work with the Acer Aspire 1.
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<p>Also during winter 2023/23 Wookey upgraded the operating system on the Acer Aspire 1 netbook from whatever Linpus dubious system it had been running to a decent Debian distribution. This required much coaxing. As of 26 March, it is still a couple of Debian versions behind where we would want it to be.
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<hr />
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Go back to: <a href="computer.html">Basecamp computers</a><br />
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Go on to: <a href="onlinesystems.html">Expo online systems</a><br />
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<hr /></body></body></html>
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