Kitz Forum

Broadband Related => Broadband Technology => Topic started by: Bowdon on November 23, 2020, 01:00:29 PM

Title: Does 10 Downing Street have full fibre?
Post by: Bowdon on November 23, 2020, 01:00:29 PM
I was just watching the latest from Boris, who was due to be speaking to the Australian PM, and this was the quality of his connection...

https://www.youtube.com/watch?v=RRTuJuqp4g4

It is my understanding that Boris is isolating in some back room in 10 Downing Street. Does stuff like this happen on a full fibre connection?


---
Admin - edited youtube url
Title: Re: Does 10 Downing Street have full fibre?
Post by: Weaver on November 23, 2020, 01:17:29 PM
Could be badness in any part of the internet; could be at the BBC end. I imagine that the pipe into Downing Street and the nearby offices must be truly massive, probably an ethernet 10G link (https://www.aa.net.uk/ethernet/how-it-works/) or more. It surely won’t be ordinary FTTP because the upstream would be so awful, it would be a corporate type connection with symmetric goodness and with no contention with other local users as in ordinary domestic FTTP, if I understand domestic FTTP correctly?

I imagine that doing video conferencing with Australia might be horrible because of problems with the internet itself and the long fat pipe latency. But this was going wrong even before we got to that, wasn’t it?

I presume that Boris’s application was sending video packets which were QOS-marked as high priority, because if not then some other flow, say even from an application running in Downing St or in the BBC could eat up all the bandwidth of the pipe. So perhaps it’s a rubbish video app that one or t’other end is using, which doesn’t use QoS properly?
Title: Re: Does 10 Downing Street have full fibre?
Post by: Bowdon on November 23, 2020, 05:04:06 PM
It's very strange.

When Boris was doing his announcement of the new tier system and was on camera in parliament, his video/audio feed went down again towards the end. Parliament had to suspend for a few minutes before the Health Secretary had to take over.

Whoever is running the Internet connection needs to get their gremlin gun out  :police:
Title: Re: Does 10 Downing Street have full fibre?
Post by: Weaver on November 23, 2020, 05:48:06 PM
Without QoS, any other bandwidth hog could pop up at any time, and even if they test the connection itself and that’s fine, still there’s only a matter of time before an unknown hog strikes at either end. So need to do an L2 packet dump and look for the video app’s QoS marking in L2 PDUs and L3 PDUs. They need people with clue, not cheap, as well as good hardware and bandwidth.
Title: Re: Does 10 Downing Street have full fibre?
Post by: meritez on November 23, 2020, 06:05:08 PM
I imagine it's an encrypted connection, probably shared with the rest of Downing Street
Title: Re: Does 10 Downing Street have full fibre?
Post by: bbnovice on November 23, 2020, 06:45:56 PM
This may be irrelevant but Skype calls to my son in Tasmania over the past 7 days have been truly terrible quality. I think there may issues at the Antipodean end?
Title: Re: Does 10 Downing Street have full fibre?
Post by: Weaver on November 23, 2020, 08:23:28 PM
I’m assuming that it went wrong before they got to the Australia part, no?