+ <div class="entry">
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Running_TP_Link_MR3040_as_a_batman_adv_mesh_node_using_openwrt.html">Running TP-Link MR3040 as a batman-adv mesh node using openwrt</a></div>
+ <div class="date">10th November 2013</div>
+ <div class="body"><p>Continuing my research into mesh networking, I was recommended to
+use TP-Link 3040 and 3600 access points as mesh nodes, and the pair I
+bought arrived on Friday. Here are my notes on how to set up the
+MR3040 as a mesh node using
+<a href="http://www.openwrt.org/">OpenWrt</a>.</p>
+
+<p>I started by following the instructions on the OpenWRT wiki for
+<a href="http://wiki.openwrt.org/toh/tp-link/tl-mr3040">TL-MR3040</a>,
+and downloaded
+<a href="http://downloads.openwrt.org/snapshots/trunk/ar71xx/openwrt-ar71xx-generic-tl-mr3040-v2-squashfs-factory.bin">the
+recommended firmware image</a>
+(openwrt-ar71xx-generic-tl-mr3040-v2-squashfs-factory.bin) and
+uploaded it into the original web interface. The flashing went fine,
+and the machine was available via telnet on the ethernet port. After
+logging in and setting the root password, ssh was available and I
+could start to set it up as a batman-adv mesh node.</p>
+
+<p>I started off by reading the instructions from
+<a href="http://wirelessafrica.meraka.org.za/wiki/index.php?title=Antoine's_Research">Wireless
+Africa</a>, which had quite a lot of useful information, but
+eventually I followed the recipe from the Open Mesh wiki for
+<a href="http://www.open-mesh.org/projects/batman-adv/wiki/Batman-adv-openwrt-config">using
+batman-adv on OpenWrt</a>. A small snag was the fact that the
+<tt>opkg install kmod-batman-adv</tt> command did not work as it
+should. The batman-adv kernel module would fail to load because its
+dependency crc16 was not already loaded. I
+<a href="https://dev.openwrt.org/ticket/14452">reported the bug</a> to
+the openwrt project and hope it will be fixed soon. But the problem
+only seem to affect initial testing of batman-adv, as configuration
+seem to work when booting from scratch.</p>
+
+<p>The setup is done using files in /etc/config/. I did not bridge
+the Ethernet and mesh interfaces this time, to be able to hook up the
+box on my local network and log into it for configuration updates.
+The following files were changed and look like this after modifying
+them:</p>
+
+<p><tt>/etc/config/network</tt></p>
+
+<pre>
+
+config interface 'loopback'
+ option ifname 'lo'
+ option proto 'static'
+ option ipaddr '127.0.0.1'
+ option netmask '255.0.0.0'
+
+config globals 'globals'
+ option ula_prefix 'fdbf:4c12:3fed::/48'
+
+config interface 'lan'
+ option ifname 'eth0'
+ option type 'bridge'
+ option proto 'dhcp'
+ option ipaddr '192.168.1.1'
+ option netmask '255.255.255.0'
+ option hostname 'tl-mr3040'
+ option ip6assign '60'
+
+config interface 'mesh'
+ option ifname 'adhoc0'
+ option mtu '1528'
+ option proto 'batadv'
+ option mesh 'bat0'
+</pre>
+
+<p><tt>/etc/config/wireless</tt></p>
+<pre>
+
+config wifi-device 'radio0'
+ option type 'mac80211'
+ option channel '11'
+ option hwmode '11ng'
+ option path 'platform/ar933x_wmac'
+ option htmode 'HT20'
+ list ht_capab 'SHORT-GI-20'
+ list ht_capab 'SHORT-GI-40'
+ list ht_capab 'RX-STBC1'
+ list ht_capab 'DSSS_CCK-40'
+ option disabled '0'
+
+config wifi-iface 'wmesh'
+ option device 'radio0'
+ option ifname 'adhoc0'
+ option network 'mesh'
+ option encryption 'none'
+ option mode 'adhoc'
+ option bssid '02:BA:00:00:00:01'
+ option ssid 'meshfx@hackeriet'
+</pre>
+<p><tt>/etc/config/batman-adv</tt></p>
+<pre>
+
+config 'mesh' 'bat0'
+ option interfaces 'adhoc0'
+ option 'aggregated_ogms'
+ option 'ap_isolation'
+ option 'bonding'
+ option 'fragmentation'
+ option 'gw_bandwidth'
+ option 'gw_mode'
+ option 'gw_sel_class'
+ option 'log_level'
+ option 'orig_interval'
+ option 'vis_mode'
+ option 'bridge_loop_avoidance'
+ option 'distributed_arp_table'
+ option 'network_coding'
+ option 'hop_penalty'
+
+# yet another batX instance
+# config 'mesh' 'bat5'
+# option 'interfaces' 'second_mesh'
+</pre>
+
+<p>The mesh node is now operational. I have yet to test its range,
+but I hope it is good. I have not yet tested the TP-Link 3600 box
+still wrapped up in plastic.</p>
+</div>
+ <div class="tags">
+
+
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/mesh network">mesh network</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>.
+
+
+ </div>
+ </div>
+ <div class="padding"></div>
+
<div class="entry">
<div class="title"><a href="http://people.skolelinux.org/pere/blog/Debian_init_d_boot_script_example_for_rsyslog.html">Debian init.d boot script example for rsyslog</a></div>
<div class="date"> 2nd November 2013</div>
</pre></p>
<p>Pretty minimalistic to me... For the record, the original sysv-rc
-script was 137 lines, and the above is just 15 lines, most of the meta
+script was 137 lines, and the above is just 15 lines, most of it meta
info/comments.</p>
<p>How to do this, you ask? Well, one create a new script
the size of init scripts (which is a good thing to do anyway), is to
get boot system that is able to handle the kernel events sensibly and
robustly, and do not depend on the boot to run sequentially. The boot
-and the kernel have not behaved sequentially in year.</p>
+and the kernel have not behaved sequentially in years.</p>
</div>
<div class="tags">
</div>
<div class="padding"></div>
- <div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Finally__Debian_Edu_Wheezy_is_released_today_.html">Finally, Debian Edu Wheezy is released today!</a></div>
- <div class="date">29th September 2013</div>
- <div class="body"><p>A few hours ago, the announcement for the first stable release of
-Debian Edu Wheezy went out from the Debian publicity team. The
-complete announcement text can be found at
-<a href="http://www.debian.org/News/2013/20130928">the Debian News
-section</a>, translated to several languages. Please check it out.</p>
-
-<p>There is one minor known problem that we will fix very soon. One
-can not install a amd64 Thin Client Server using PXE, as the /var/
-partition is too small. A workaround is to extend the partition (use
-lvresize + resize2fs in tty 2 while installing).</p>
-</div>
- <div class="tags">
-
-
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
-
-
- </div>
- </div>
- <div class="padding"></div>
-
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-<li><a href="http://people.skolelinux.org/pere/blog/archive/2013/11/">November (2)</a></li>
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2013/11/">November (3)</a></li>
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+ <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (226)</a></li>
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+ <li><a href="http://people.skolelinux.org/pere/blog/tags/mesh network">mesh network (4)</a></li>
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+ <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (157)</a></li>
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