Reply
Highlighted
SuperUser
Posts: 16,669
Registered: ‎06-23-2010
Kudos: 5247
Solutions: 78

Dying Gasp

It would be great to have the Dying Gasp functionality added to EdgeRouter and airMax equpment.  This would allow us to see when a subscriber drops offline due to power issues, vs something else and would greatly aid in troubleshooting.

 

A dying gasp is a message (or signal) sent by the customer premises equipment (CPE) DSL device to the digital subscriber line access multiplexer (DSLAM) when a power outage occurs.

 

https://community.ubnt.com/t5/EdgeMAX-Feature-Requests/Dying-Gasp/idc-p/2318480#M2720

SuperUser
Posts: 16,072
Registered: ‎02-03-2013
Kudos: 8790
Solutions: 594
Contributions: 2

Re: Dying Gasp

Matt. This would require a battery in the equipment 

ubiquiti certified trainer :: ubwa | uewa
SuperUser
Posts: 13,667
Registered: ‎12-08-2008
Kudos: 10504
Solutions: 641
Contributions: 1

Re: Dying Gasp


@mhoppes wrote:

It would be great to have the Dying Gasp functionality added to EdgeRouter and airMax equpment.  This would allow us to see when a subscriber drops offline due to power issues, vs something else and would greatly aid in troubleshooting.

 

A dying gasp is a message (or signal) sent by the customer premises equipment (CPE) DSL device to the digital subscriber line access multiplexer (DSLAM) when a power outage occurs.

 

https://community.ubnt.com/t5/EdgeMAX-Feature-Requests/Dying-Gasp/idc-p/2318480#M2720


As Claude said, it's a power issue.   If you just wanted the ER to send a message there might be enough residual power immediately (milliseconds) after a power outage to do that, but the radios use way too much power for that.   With DSL it's easy since the poweer needed to send the packet is very low - RF, not so much...

Jim

" How can anyone trust Scientists? If new evidence comes along, they change their minds! " Politician's joke (sort of...)
"Humans are allergic to change..They love to say, ‘We’ve always done it this way.’ I try to fight that. "Admiral Grace Hopper, USN, Computer Scientist
":It's not Rocket Science! - Oh wait, Actually it is... "NASA bumper sticker
":The biggest problem in tech I see right now is that most users don't want to do things that are hard. That doesn't bode well for the industry or the society.": (me. actually ;-)
SuperUser
Posts: 16,669
Registered: ‎06-23-2010
Kudos: 5247
Solutions: 78

Re: Dying Gasp

I'm not so sure this would require a battery. The EdgeRouter should be easy to do. The Radios I feel like it could be done with a slightly larger capacitor?
SuperUser
Posts: 16,072
Registered: ‎02-03-2013
Kudos: 8790
Solutions: 594
Contributions: 2

Re: Dying Gasp


@mhoppes wrote:
I'm not so sure this would require a battery. The EdgeRouter should be easy to do. The Radios I feel like it could be done with a slightly larger capacitor?

Its hard enough that I don't see a cost benefit in trying to add large enough capacitors across the entire distuptively priced line to do this. 

ubiquiti certified trainer :: ubwa | uewa
Emerging Member
Posts: 52
Registered: ‎03-13-2018
Kudos: 7
Solutions: 1

Re: Dying Gasp

Not all devices send that packet back. You can have it logged locally also...

SuperUser
Posts: 16,669
Registered: ‎06-23-2010
Kudos: 5247
Solutions: 78

Re: Dying Gasp

True... even if we can't send it back... having it logged would be nice too.
Senior Member
Posts: 3,857
Registered: ‎05-15-2014
Kudos: 1371
Solutions: 264

Re: Dying Gasp

[ Edited ]

Just a thought, if you really need to log power outages then you could hack together an RPi or Arduino device connected to a small rechargeable battery that you'd add to each site you need monitor. It can even have a GSM module if real-time info during outage is needed.

Reply