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Forum Discussion
stevio
Feb 01, 2015Aspirant
Wake on LAN stopped working on my RN102
Does anyone else currently use WoL on their RN102? I used to use it occasionally, and I can't think what's changed since I last used it. Possibly the 6.2.2 firmware update? I'm using the SimpleWo...
StephenB
Feb 01, 2015Guru - Experienced User
Are you using the app over the internet (or cellular data), or are you using it on your local WiFi?
One problem with most of these apps is that very few routers forward broadcast packets. So the apps send to the router's WAN IP address, and the WoL packet needs to be forwarded to the NAS IP address by the router.
Failure modes include (a) NAS IP address changing (b) the router WAN IP changing (if no DDNS) and (c) the router+switches not knowing how to route the packets to the NAS.
On (c) - when the NAS is not responding, both the router and any switches eventually "forget" how to reach the port the NAS is connected too. The protocols for re-discovering that information require the NAS to respond.
I have an WoL add-on installed on my pro. I use that to wake my client PCs, but leave the NAS running 24-7. That works because the NAS is sending ethernet broadcast packets, which always reach the full network.
One problem with most of these apps is that very few routers forward broadcast packets. So the apps send to the router's WAN IP address, and the WoL packet needs to be forwarded to the NAS IP address by the router.
Failure modes include (a) NAS IP address changing (b) the router WAN IP changing (if no DDNS) and (c) the router+switches not knowing how to route the packets to the NAS.
On (c) - when the NAS is not responding, both the router and any switches eventually "forget" how to reach the port the NAS is connected too. The protocols for re-discovering that information require the NAS to respond.
I have an WoL add-on installed on my pro. I use that to wake my client PCs, but leave the NAS running 24-7. That works because the NAS is sending ethernet broadcast packets, which always reach the full network.
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