Siemens I-Gate ?

[Jim Carter]

On Fri, 26 Jul 2002, BJORKMAN MARTIN wrote:
> I've a slight problem getting a Siemens I-Gate card working under linux
> 2.4.18. I use the lnwg-ng drivers which should work.

What is it failing to do?

> modprobe prism2_plx
> wlanctl-ng wlan0 lnxreq_ifstate ifstate=enable
> wlanctl-ng wlan0 lnxreq_autojoin ssid=1WAEH2KB00VI authtype=opensystem
> ifconfig wlan0 137.223.140.141 netmask 255.255.254.0 broadcast
> 137.223.140.255
> route add default gw 137.223.140.1
>
> And an ifconfig gets me:
> wlan0     Link encap:Ethernet  HWaddr 00:90:D1:00:6D:B5
>           inet addr:137.223.140.141  Bcast:137.223.140.255 Mask:255.255.254.0
>           UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:100
>           RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
>           Interrupt:5 Base address:0x3400

"iwconfig wlan0" should reveal if it's associated with an access point (if
a nonnull MAC address is shown), and if the ESSID is set to what you
thought you set it to. I assume the network does not have WEP turned on.
Normally you would specify an ESSID, typically alphabetic, and let the
card pick which access point (SSID) serving that ESS that it likes best.  I
actually didn't know that you could force it to use a specific SSID.

One interesting item: your netmask is 255.255.254.0 (512 addresses on the
subnet), but the broadcast address is 137.223.140.255, should be
137.223.141.255 (all 1's in the subnet portion).  You should be able to
ping other stations with a bad broadcast address, but services using
IP-level broadcasting will fail.

Normally on a big subnet like yours, particularly wireless, it would be set
up to pass out IP addresses by DHCP.  I assume you're just stealing an
unoccupied address for testing, so you don't have to debug multiple layers
at the same time.  That's a wise move.  The address you picked really is
unoccupied, isn't it?


James F. Carter          Voice 310 825 2897    FAX 310 206 6673
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Email: jimc at math.ucla.edu    http://www.math.ucla.edu/~jimc (q.v. for PGP key)