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>Checking things in case they don't work</TITLE
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>8. Checking things in case they don't work</H1
><P
>1. Be sure to type <TABLE
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>ifconfig</PRE
></FONT
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><P
>You should something like this</P
><P
CLASS="LITERALLAYOUT"
>lo&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Link&nbsp;encap:Local&nbsp;Loopback<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;inet&nbsp;addr:127.0.0.1&nbsp;&nbsp;Mask:255.0.0.0<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;UP&nbsp;LOOPBACK&nbsp;RUNNING&nbsp;&nbsp;MTU:16436&nbsp;&nbsp;Metric:1<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;RX&nbsp;packets:0&nbsp;errors:0&nbsp;dropped:0&nbsp;overruns:0&nbsp;frame:0<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;TX&nbsp;packets:0&nbsp;errors:0&nbsp;dropped:0&nbsp;overruns:0&nbsp;carrier:0<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;collisions:0&nbsp;txqueuelen:0<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;RX&nbsp;bytes:0&nbsp;(0.0&nbsp;b)&nbsp;&nbsp;TX&nbsp;bytes:0&nbsp;(0.0&nbsp;b)<br>
<br>
wlan0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Link&nbsp;encap:Ethernet&nbsp;&nbsp;HWaddr&nbsp;00:06:25:A8:AE:64<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;inet&nbsp;addr:192.168.1.104&nbsp;&nbsp;Bcast:192.168.1.255&nbsp;&nbsp;Mask:255.255.255.0<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;UP&nbsp;BROADCAST&nbsp;RUNNING&nbsp;MULTICAST&nbsp;&nbsp;MTU:1500&nbsp;&nbsp;Metric:1<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;RX&nbsp;packets:35197&nbsp;errors:0&nbsp;dropped:0&nbsp;overruns:0&nbsp;frame:0<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;TX&nbsp;packets:57676&nbsp;errors:0&nbsp;dropped:0&nbsp;overruns:0&nbsp;carrier:0<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;collisions:0&nbsp;txqueuelen:100<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;RX&nbsp;bytes:43386657&nbsp;(41.3&nbsp;MiB)&nbsp;&nbsp;TX&nbsp;bytes:2670811&nbsp;(2.5&nbsp;MiB)<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Interrupt:3&nbsp;Base&nbsp;address:0x100</P
><P
>The keys point here are that <EM
>inet addr:</EM
>has a real IP address, and that <EM
>Bcast</EM
> and <EM
>Netmask</EM
> are set up such that they are on the same "wave-length" as your Wireless Access Point.</P
><P
>2. If you don't, you might have had the same problem i did which was that there was no easy script to initiate the wlan0 device setup. That is to say, if the card was recognized but you still did not get a connection and say that ifconfig showed wlan0 present but with no IP address. In other words, you might see something like this:</P
><P
><P
CLASS="LITERALLAYOUT"
>text:/home/dude#&nbsp;ifconfig<br>
<br>
lo&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Link&nbsp;encap:Local&nbsp;Loopback<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;inet&nbsp;addr:127.0.0.1&nbsp;&nbsp;Mask:255.0.0.0<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;UP&nbsp;LOOPBACK&nbsp;RUNNING&nbsp;&nbsp;MTU:16436&nbsp;&nbsp;Metric:1<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;RX&nbsp;packets:14&nbsp;errors:0&nbsp;dropped:0&nbsp;overruns:0&nbsp;frame:0<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;TX&nbsp;packets:14&nbsp;errors:0&nbsp;dropped:0&nbsp;overruns:0&nbsp;carrier:0<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;collisions:0&nbsp;txqueuelen:0<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;RX&nbsp;bytes:700&nbsp;(700.0&nbsp;b)&nbsp;&nbsp;TX&nbsp;bytes:700&nbsp;(700.0&nbsp;b)<br>
<br>
wlan0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Link&nbsp;encap:Ethernet&nbsp;&nbsp;HWaddr&nbsp;00:06:25:A8:AE:64<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;UP&nbsp;BROADCAST&nbsp;RUNNING&nbsp;MULTICAST&nbsp;&nbsp;MTU:1500&nbsp;&nbsp;Metric:1<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;RX&nbsp;packets:1&nbsp;errors:0&nbsp;dropped:0&nbsp;overruns:0&nbsp;frame:0<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;TX&nbsp;packets:0&nbsp;errors:0&nbsp;dropped:0&nbsp;overruns:0&nbsp;carrier:0<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;collisions:0&nbsp;txqueuelen:100<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;RX&nbsp;bytes:46&nbsp;(46.0&nbsp;b)&nbsp;&nbsp;TX&nbsp;bytes:0&nbsp;(0.0&nbsp;b)<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Interrupt:3&nbsp;Base&nbsp;address:0x100<br>&#13;</P
></P
><P
>As you can see, the interface device, the Wireless pcmcia card, is noted, but there is no <EM
>inet addr</EM
>. The pcmcia software recognized the card, but it has not successfully connected with the Wireless Access Point.</P
><P
>I used the command,<EM
>pump</EM
> to send a simple DHCP request to the DHCP server for the device in question. I used<TABLE
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>pump -i wlan0</PRE
></FONT
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> which essentially runs a simple DHCP request to set up that card, wlan0, in this case.</P
><P
>You can get the <EM
>pump</EM
> by <TABLE
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>apt-get install pump</PRE
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><P
>While I needed to use <TABLE
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>pump -i wlan0</PRE
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> on my laptop, I did not need this when I set up the link-sys wireless WPC11 card on my girlfriend's laptop. She has a Link-Sys WPC11 version 2.5 pcmcia card.</P
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