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Re: Power line Ethernet stopping iPhone Sonos app working



We've not specifically seen issues with DHCP but we have seen issues where
they don't wake up properly after they've gone into low power mode (but
popping a simple network switch between the EOM device and the kit
connected to it resolves it - go figure!) and we've seen issues with IGMP
(v2 and v3) broadcasts not being correctly passed through them ...

Phil

Sent from another bloody fruit-based portable device...

> On 25 Jun 2016, at 15:01, Nicholas Humfrey njh@xxxxxxx [ukha_d]
<ukha_d@xxxxxxx> wrote:
>
> Hi,
>
>
> Yes, I have also experienced problems with high latency and packet
loss
> with power line ethernet at my parents house. I personally have Cat6
in
> my house, but I can understand that not everyone can/wants to lift the
> floor and chase wires in the walls!
>
>
> I imagine part of the problem with Sonos is that because it aims for a
> low latency audio between speakers/zones, it doesn't cope will with
> having to do packet re-transmissions, which then add to the delays.
>
>
> Very odd that power line has problems with DHCP - I have not seen
that.
> Although it is possible if packet loss is high enough, the repeat
> requests/responses just aren't getting through; DHCP uses UDP not TCP.
>
>
> Additionally BBC R&D have done some research that shows power-line
> transmissions can interfere with broadcast transmissions:
>
>
> http://www.bbc.co.uk/rd/publications/whitepaper195
> http://www.bbc.co.uk/rd/search?query=PLT
>
>
>
>
> nick.
>
>
>
>
>> On 2016-06-25 08:33, Phil Harris phil@xxxxxxx [ukha_d] wrote:
>> Yup - they're the f*cking bane of my life too and the first thing
that
>> I get anyone that calls me with streaming / discovery issues with
our
>> kit to remove from their networks as the very first test ...
Almost
>> always resolves the problem.
>>



------------------------------------
Posted by: Phil Harris <phil@xxxxxxx>
------------------------------------

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