Run Static ARP Entries Daily

[godsplague]

Hello

I am not very fluent with linux but I have been trying to do some research on setting static arp entries. I am trying to be able to wake my pc at home when I am at the office or elsewhere. I can wake it just fine if I am on my local network and log in to the router and send it a magic packet.

If I'm researching in the right direction my issue lies with having a static arp entry for the machine I want to wake. I used telnet to get into the router and created the static arp entry and managed to get it to wake from the office, but as I've read when the router reboots it loses the arp entry. I was hoping someone might be able to link me to some fairly basic instructions on how to get a script going to add my arp entry at reboot. Or any other suggestions/concerns are welcomed.

Thanks

 

[ColinTaylor]

What command have you been using so far? I wouldn't have thought that you would need the ARP table entries unless the target device was not on the local subnet (or you don't know its MAC address).

Try this from the router (assuming your network is 192.168.1.x):

ether-wake -b 192.168.1.255 -i br0 xx:xx:xx:xx:xx:xx

Where xx:xx:xx:xx:xx:xx is the MAC address.

http://www.snbforums.com/threads/remote-wol.10805/#post-66751

 

[GSpock]

Hello

I am not very fluent with linux but I have been trying to do some research on setting static arp entries. I am trying to be able to wake my pc at home when I am at the office or elsewhere. I can wake it just fine if I am on my local network and log in to the router and send it a magic packet.

If I'm researching in the right direction my issue lies with having a static arp entry for the machine I want to wake. I used telnet to get into the router and created the static arp entry and managed to get it to wake from the office, but as I've read when the router reboots it loses the arp entry. I was hoping someone might be able to link me to some fairly basic instructions on how to get a script going to add my arp entry at reboot. Or any other suggestions/concerns are welcomed.

Thanks

Hi,
check this one ... http://www.snbforums.com/threads/port-fodwarding-for-wake-on-lan-problems.26771/#post-201913

 

[GSpock]

What command have you been using so far? I wouldn't have thought that you would need the ARP table entries unless the target device was not on the local subnet (or you don't know its MAC address).

Try this from the router (assuming your network is 192.168.1.x):

ether-wake -b 192.168.1.255 -i br0 xx:xx:xx:xx:xx:xx

Where xx:xx:xx:xx:xx:xx is the MAC address.

http://www.snbforums.com/threads/remote-wol.10805/#post-66751

... pretty sure that he is looking for "arp -s" command to be put into service_start script .... that way, you can also wake-up the device from internet, not only via the router itself.

 

[godsplague]

Yes to be more precise I'm trying to wake my pc from a completely different network. If I'm at home I can log in to my router to send the magic packet to wake it successfully. I have port 9 forwarded to the static ip address assigned for the pc I am trying to wake. Is this the service start script you speak of? /jffs/scripts/services-start and I should be able to just add the arp -s IP MAC to it so it will run at every router reboot, correct?

Created the services-start script based off the custom script info I found on github. Will try it out tomorrow to see.

 

[GSpock]

Yes to be more precise I'm trying to wake my pc from a completely different network. If I'm at home I can log in to my router to send the magic packet to wake it successfully. I have port 9 forwarded to the static ip address assigned for the pc I am trying to wake. Is this the service start script you speak of? /jffs/scripts/services-start and I should be able to just add the arp -s IP MAC to it so it will run at every router reboot, correct?

Created the services-start script based off the custom script info I found on github. Will try it out tomorrow to see.

Yes, absolutely ; if you do it right, it will work, has been working for me for months now ....(and I also use Teamviewer)
Cheers,
GS

N.B: I noticed that when you go on the GUI and tick a new 380.87 feature that is called "IP MAC Binding" or something like that, it clears-up the ARP cache .... so, I deducted that if I want to be sure my devices get arp static, I should run the arp -s statements via a cronjob (let's say every 1 hour) ...

 

[CerB]

Is there somewhere a guide on how to do this ? i need the static arp setup for wake on wan. my problem is that after 30 min or so, i cant wake anything from outside my network.