Switching WLAN off by cron

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JMC
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Joined: 06 Nov 2006
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Location: Aachen, Cologne, Germany
PostPosted: Thu Jan 13, 2011 16:58    Post subject: Switching WLAN off by cron Reply with quote
Hi,

I searched alot and found some other threads (all years old) but none of it works...

I'm searching a way to switch WLAN / Radio off by cron (or by time in general) on my fonera with Build 14986.

The reason: I'm using this fonera as a "gateway" to my Guest-WLAN on my Fritzbox to get some VMs to the internet without having them in my LAN. But there is no need to have Wlan on all the time - since the WLAN on the Fritz is off for ~10 hours a day...

any way to do this? There is no /usr/sbin/wl on my fon...

Greets
Peter
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prdufresne
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Joined: 19 Dec 2010
Posts: 62
PostPosted: Thu Jan 13, 2011 19:04    Post subject: Reply with quote
Try the following two scripts:

This has some scripting that will help you ID your WLAN interface and shows you how to enable/disable it.

http://www.dd-wrt.com/wiki/index.php/Useful_Scripts#Reset_Wireless_Radio

This one shows you how to enable/disable the WIFI using the button on the front.

http://www.dd-wrt.com/wiki/index.php/LED_Scripts#Wifi_Toggle_D-Link_DIR-300


Note that the second script uses ifconfig rather than wl, so it should work for you.
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JMC
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Location: Aachen, Cologne, Germany
PostPosted: Thu Jan 13, 2011 19:20    Post subject: Reply with quote
Thanks, but the first script is using "wl" as well... So no luck with this

The second script looks interesting - but wlan is activated back again after some seconds...

So still searching...
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prdufresne
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PostPosted: Thu Jan 13, 2011 19:23    Post subject: Reply with quote
I was suggesting sources for script segments. I don't think you'll find a pre-writtem script that does what you need.

You could modify the firt script (using the button) with the instructions from the second that uses ifconfig rather than wl.
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JMC
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Location: Aachen, Cologne, Germany
PostPosted: Thu Jan 13, 2011 19:27    Post subject: Reply with quote
Yes i know what you mean, i allready did this ;)

But the interface is coming back up again even with ath0_net_mode=disabled and gpio disable 2 for the fonera 2100 and ifdown...
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fyi2000
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Joined: 04 Apr 2010
Posts: 642
PostPosted: Thu Jan 13, 2011 20:09    Post subject: Reply with quote
For La Fonera:
Code:
*/30 * * * * root if [ -n "`ifconfig ath0 | grep UP`" ]; then if [ -z `wl_atheros assoclist` ]; then if [ -e /tmp/wlan_idle ]; then ifconfig ath0 down; iwconfig ath0 txpower off; gpio disable 2; rm /tmp/wlan_idle; else echo 1 > /tmp/wlan_idle; fi; elif [ -e /tmp/wlan_idle ]; then rm /tmp/wlan_idle; fi; elif [ -e /tmp/wlan_idle ]; then rm /tmp/wlan_idle; fi

DD-WRT Forum :: View topic - wl command "not found"
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JMC
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Joined: 06 Nov 2006
Posts: 42
Location: Aachen, Cologne, Germany
PostPosted: Thu Jan 13, 2011 20:26    Post subject: Reply with quote
Hmm - looks very interessting but it's the same problem... radio turns back on some seconds after the script finishes...

Code:
64 bytes from 192.168.179.21: seq=3950 ttl=64 time=2.469 ms
64 bytes from 192.168.179.21: seq=3951 ttl=64 time=2.091 ms
64 bytes from 192.168.179.21: seq=3952 ttl=64 time=2.611 ms
64 bytes from 192.168.179.21: seq=4017 ttl=64 time=16.450 ms
64 bytes from 192.168.179.21: seq=4018 ttl=64 time=3.845 ms
64 bytes from 192.168.179.21: seq=4019 ttl=64 time=3.296 ms


Same effect without gpio disable 2...

Maybe it's cause the fonera is running in bridged mode?
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prdufresne
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PostPosted: Thu Jan 13, 2011 20:29    Post subject: Reply with quote
What happens if you telnet into the router and manually disable the interface with the ifconfig command?

Does it stay disabled?

Sorry I can't duplicate your conditions with my router...
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JMC
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PostPosted: Thu Jan 13, 2011 20:33    Post subject: Reply with quote
All commands were issued using dropbear... it won't stay disabled, webif or telnet/ssh...

It turns back on Sad
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fyi2000
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PostPosted: Fri Jan 14, 2011 6:37    Post subject: Reply with quote
JMC wrote:
Yes i know what you mean, i allready did this ;)

But the interface is coming back up again even with ath0_net_mode=disabled and gpio disable 2 for the fonera 2100 and ifdown...

"ath0_net_mode=disabled" takes effect on nvram commit and reboot. GPIO only controls LED.
Code:
ifconfig ath0 down

JMC wrote:
It turns back on

The script I provided is a cron job.
Check the wireless scheduler.
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JMC
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Joined: 06 Nov 2006
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Location: Aachen, Cologne, Germany
PostPosted: Fri Jan 14, 2011 9:34    Post subject: Reply with quote
I know it's a cron - but:
- using it as a cronjob the wlan interface turns back on after some seconds
- using only the script it turns back on after some seconds
- using the script through the webgui it turns back on after some seconds

There is no wireless scheduler available on the webgui - otherwise i wouldn't ask Wink
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