Wireless and DHCP Trouble

AMarkos · 11-03-2007, 07:28 PM

Hi

I set my wifi with iwconfig wlan0 essid "blablabla".

In the iwconfig I see that there is no problem, that the data is successfully entered, however, when I do a ping it does not work. My router uses DHCP to offer addresses to the ones that connect.
I do a route command and only the loopback shows. Any ideas? I am using Slackware 12.

dgar · 11-03-2007, 08:16 PM

What wifi card?

Some prism cards need a nebulously documented:
ifconfig wlan0 up

Before DHCP works.

Vincent_Vega · 11-03-2007, 08:18 PM

Try:
- ifconfig wlan0 up
- iwconfig wlan0 essid "blabla"
- dhcpcd wlan0

If you have any security set up on that wireless network, you'll have to add more steps to get that working but from what you've said, I don't know. For me, even though I see a wlan0 also, my actual device is ath0. See if you don't have something else listed under 'ifconfig'.

dgar · 11-03-2007, 08:47 PM

Quote:

Originally Posted by Vincent_Vega

Try:
- ifconfig wlan0 up
- iwconfig wlan0 essid "blabla"
- dhcpcd wlan0

If you have any security set up on that wireless network, you'll have to add more steps to get that working but from what you've said, I don't know. For me, even though I see a wlan0 also, my actual device is ath0. See if you don't have something else listed under 'ifconfig'.

Check 'ifconfig -a' as well.

AMarkos · 11-04-2007, 08:44 AM

Thanks, it works with the up parameter.

dgar · 11-04-2007, 09:43 AM

Quote:

Originally Posted by AMarkos

Thanks, it works with the up parameter.

For the untold number of future googlers looking for this particular bit of magic... can you post the following:

lspci | grep -i wireless

The name of the module from 'lsmod'... maybe 'lsmod | grep ieee80211'

iwconfig (you can XXXX out the MAC address and ESSID identifiers)

And of course, the fix. I'm still unsure if you added 'up' to eth2 or wlan0 or what? And does this work over a reboot?