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[Weaver]

What do you do to protect your ONT from lightning damage via the mains?

[craigski]

A UPS and a backup 4G and/or FTTC connection.

[Alex Atkin UK]

What do you do to protect your ONT from lightning damage via the mains?

I use the wall-wart UPS you recommended.  The ONT only uses 2.5W max so should last ages on that.  Of course wont do me much good given the router and switch only have 10-15 minutes. 

[dee.jay]

Well - does an ONT really need UPS coverage? It's not like a FTTC where maintaining a constant connection is desirable.

Can't wait to be rid of FTTC but, not a lot of choice.

[XGS_Is_On]

It's one of the devices protected here - https://forum.kitz.co.uk/index.php/topic,27467.msg462436.html#msg462436

[craigski]

Well - does an ONT really need UPS coverage?

You may want to maintain your network during a planned/unplanned power outage, eg check your DNO's website for faults during a power outage? I have had to do that twice recently, as my 4G reception is not brilliant indoors.

[Alex Atkin UK]

Well - does an ONT really need UPS coverage? It's not like a FTTC where maintaining a constant connection is desirable.

Can't wait to be rid of FTTC but, not a lot of choice.

If you want VoIP to work during a prelonged power cut where the cell towers run out of juice, then yeah.   Its unlikely to happen, but worth considering for some.  Or if someone is working using cloud applications using their laptop, could be useful to have a few minutes to tidy up what you were doing.

Its rather too complicated for me given my setup, as the router only gets 15 minutes power anyway (I don't have the physical space for a higher capacity UPS).  I should probably find an old router and configure it for Zen as a backup anyway though.

[dee.jay]

Course, VoIP.

I'd just use my mobile so wouldn't worry about keeping my VoIP running - same problem with DECT though - base needs power to operate and I haven't owned a corded telephone since... who even knows... Not that would be of any use as I've no landline to make calls off anymore

[XGS_Is_On]

I use the wall-wart UPS you recommended.  The ONT only uses 2.5W max so should last ages on that.  Of course wont do me much good given the router and switch only have 10-15 minutes. 

As I'm all about the detail and just FYI, Weaver, my 4 port Huawei HG8240H draws 3.6 watts at peak hunger and my YouFibre Adtran 622v 6.6 watts. The Adtran is almost certainly using a smaller fabrication process for the chips however the XGSPON laser is a little more power hungry than a GPON one and 10GBase-T is notorious for power consumption relative to alternatives.

[Ixel]

An 'online' UPS, but some other devices are also connected to the UPS. It should last around an hour or so assuming all of the currently connected devices remain connected. After that there's my petrol generator which is handy in the event of an extended power outage.

[Alex Atkin UK]

As I'm all about the detail and just FYI, Weaver, my 4 port Huawei HG8240H draws 3.6 watts at peak hunger and my YouFibre Adtran 622v 6.6 watts. The Adtran is almost certainly using a smaller fabrication process for the chips however the XGSPON laser is a little more power hungry than a GPON one and 10GBase-T is notorious for power consumption relative to alternatives.

Its my understanding 10GBase-T will pull at least 2W raising up to 5W depending on cable length with Gigabit more like half a watt.

I can't find the numbers for 2.5G and 5G but its clearly much lower given both can run off a 5v 900mA USB adapter, though I wonder if that impacts the max cable length?

[XGS_Is_On]

The 10GBase-T SFP+ connected to the ONT is... toasty.

It actually triggers the router's fans. Look at the delta between CPU temperature and that module  :'(

[Alex Atkin UK]

Yeah I notice my Aquantia AQC107 NIC gets pretty toasty, some people were claiming it was crashing due to heat though I found it only had issues on Windows and updating the firmware (touch wood) so far seems to have solved it.

Although idle:

Code: [Select]

enp6s0-pci-0600
Adapter: PCI adapter
PHY Temperature:  +82.9°C 
MAC Temperature:  +79.8°C
Under load:

Code: [Select]

enp6s0-pci-0600
Adapter: PCI adapter
PHY Temperature:  +84.3°C 
MAC Temperature:  +81.0°C
ASUS really should have used TiM on these, instead they have a stupid thermal pad which clearly is struggling.

Oh interesting, forcing EEE on with ethtool:

IDLE:

Code: [Select]

enp6s0-pci-0600
Adapter: PCI adapter
PHY Temperature:  +77.3°C 
MAC Temperature:  +74.7°C
LOAD:

Code: [Select]

enp6s0-pci-0600
Adapter: PCI adapter
PHY Temperature:  +80.8°C 
MAC Temperature:  +77.4°C
Rather annoying that Aquantia do not mention the maximum chip temperature, only operating temperature of 55C which clearly must mean inside the case as they mention passive.  It also seems rather unrealistic given the above in an actively cooled case, but I guess they weren't counting on ASUS making a card with a crap interface and heatsink.

To be fair I've not had any performance problems with it (unlike the same card in my Windows 11 box) and I would have gone Intel but I only have a 4x PCIe 4.0 lanes.

[Robbie]

I use an Eaton 3S Mini for my ONT power; I used the same unit for my G.fast modem before it. 

I also have a PoE splitter that I can use from my main rack UPS... should outages become more protracted.

https://www.amazon.co.uk/Eaton-3S-Mini-black-white/dp/B092TG9M7C

[Ixel]

The 10GBase-T SFP+ connected to the ONT is... toasty.

It actually triggers the router's fans. Look at the delta between CPU temperature and that module  :'(

I have some small fans blowing over my S+RJ10's in the switch, each with a rather small heatsink on the top side of them. My most active one seems to be around 64C to 65C at the moment, room temperature is currently 24.5 C.



Every little helps I guess , but yeah they do get a little warm. Even the onboard LANs on both of my Threadripper systems do, quite a bit hotter than 65C if I don't have any cooling fans running in the case.