Wake on LAN over different VLANS
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@szecca1 said:
@Wayne-Workman said:
@szecca1 Better yet, see if you can get in touch with a Nortel person and see what they say about it. Or search their website for information.
I think you are saying that FOG requires that broadcasts be allowed to travel across the router to other VLANs.
This makes no sense - and even if it could be done - would not be advisable.
That’s what I’m being told, does this sound correct?You came to us with questions about how this is done, and we’ve helped you to the best of our abilities to troubleshoot, identify the problem, and guide you to accomplish what you’re wanting. It’s not our place to say what’s advisable and what’s not for you. Those kinds of decisions should be made by you and your network team.
We’re just here to help you do what you want, to help solve problems, etc.
But, I’ll tell you, it sounds like your network team don’t fully understand how the WOL plugin works, and I’ll tell you that YES, it can be done. And while the packet is a broadcast packet, it’s a packet destined for another network. It’s not broadcast throughout it’s source network, only it’s destination network. The router needs only to forward it, like we’ve pointed out. When it’s broadcast at the destination network, when those broadcast packets hit the router, because the destination network matches the source network, the router ignores it.
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There is one alternative that I thought of…
You could use dedicated relays.
Relays are generally used to encapsulate a UDP packet (or any packet) into a TCP packet, send it to a relay on another network, then the receiving relay would then decapsulate the packet back to UDP, and then send it out.
I’ve seen this used for emergency broadcast systems before, it works well. I’m sure there are several software solutions that do it, both free and paid.
Then, you could just point the WOL plugin to the local relay. Ofcourse, this is just an alternative if your network team just doesn’t want to make a change. You could setup relays without help from the network guys. It’s not ideal and would require you to run a relay on some computer on each network (like a server)… but it’d work.
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@Wayne-Workman First I want to apologize, I know you guys have worked hard to help me out and I could never repay you for all the help you have given so thank you very much. My company finally decided to work with me and we got it working in one building. They enabled direct broadcasts on both passports and now it is working fine. No one ever informed me that we had two passports which is fantastic. We are going to cleanup the switches and continue testing but seems like we may have figured it out, thanks to you guys!
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@Wayne-Workman After we installed Fedora 21 server wake on lan no longer works even on the same vlan. I feel like i might have to install something but I can not find anything on the wiki. Would you be able to assist?
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If you’re patient when I get home I can possibly help.
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Can you provide the output of this?
ip link show -
@Tom-Elliott Take your time Tom! I am very patient and have any time you need so whenever you are free.
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@Wayne-Workman This is the result
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I’ll try to “schedule” it for tonight then, if that’s okay? I’m on EDT (New York).
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@szecca1 said:
@Wayne-Workman This is the result
Make sure that ens32 is set as the interface for that server’s storage node.
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@Tom-Elliott I work from 8-4 every day during the week, but if you are only available at night I can make it work. I’m in NY as well so time wise will be the same
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@Wayne-Workman If you’re talking about on the fog server where the storage node is, right now it is set to ‘bond0’ You’re saying to change that to ens32? and that should fix the wake on lan?
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@Wayne-Workman I tried that and still the computer is not turning on. It has the same settings as before I switched to Fedora when the wake on lan worked with Ubuntu. Just confused haha
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@Developers Where is package / code that actually sends the WOL ?
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Please try updating to the latest. I altered some more of the code and things should work. Again, as I told you in chat, I don’t have physical systems for testing WOL on, so most of the time I’m just working blind and hoping for the best. Every once in a while I can test where I work, but this time of year, as I hope you all understand, it’s pretty unrealistic. Please let me know if it is working now.
Thank you,
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Okay, so I was an idiot when working with things. @szecca1 is using a NAS. I set Wake on lan to get all nodes to try waking up hosts. NAS cannot wake up hosts because the links that wake them up is not installed. Fixed this by adding the FOG_WEB_HOST as a starting point for WOL as well.
It appears all is now working.
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Glad to see this is fixed. I helped to the extent of my abilities via forum chat but I came to a dead end basically. And Tom’s post explains why. Good to see a solution is found.
