In reply to a post by Pheasant:

In reply to a post by S2KIP:

Only one person (AFAIK) has had their issue fixed by replacing a faulty Cablelink.

Faulty line card on the L2S, apparently, rather than Cablelink. Minor point.

Not knowing what switches OR use, that could have been 48 ports. Ouch.

In reply to a post by S2KIP:

Not knowing what switches OR use, that could have been 48 ports. Ouch.

Their OLTs do L2S duty as well. Depending on the vendor they can even happily use the same cards for everything, just the pluggables changing.

Edited by XGS_Is_On (Fri 01-Jul-22 08:52:56)

In reply to a post by S2KIP:

I'm talking specifically about latency and not throughput. I'm happy for your friend.

Congestion would vary depending on time of day. Evenings it'd be at its worst. This issue doesn't have that pattern. People aren't showing BQMs with latency ramping up in the evening then packet loss kicking in as buffers fill and drops occur.

Is that on the Nokia (and Adtran) units? Thought the MA Huawei stuff had dedicated cards.

I opened a ticket with Zen as my latency jumped from 5ms to 20ms on 22/6, I originally thought it was gateway selection (Manchester vs London). Found this thread, and just checked my Zen portal I see this:

Zen FTTP GEA Migration
zenxxxxxx@zen Fulfilled on 22/06/2022 £0

Speed is OK, no packet loss, just latency has gone up from 5 to 20 ms.

Hi Craigski,

Would be really interested to know where you are located, but routing via Manchester is ominous. Latency leaping like that is also suspicious, but I think we all had issues with speed dropping, but there may be reasons that you aren't getting that. Firstly, are you using the FritzBox router? Are you having any issues with the connection going away occasionally? What package do you have from Zen?

The text you show certainly is the start of where a few of us have experienced issues.

Steve

In reply to a post by craigski:

I opened a ticket with Zen as my latency jumped from 5ms to 20ms on 22/6, I originally thought it was gateway selection (Manchester vs London). Found this thread, and just checked my Zen portal I see this:

Zen FTTP GEA Migration
zenxxxxxx@zen Fulfilled on 22/06/2022 £0

Speed is OK, no packet loss, just latency has gone up from 5 to 20 ms.

Exact same here although jitter has increased too.

I wonder if Zen's backhaul is routing traffic to Manchester first before London. Of course we'd never see that.

GEA migration didn't change my latency at all.

I guess this is because Zen's backhaul goes from my exchange to Zen in London. I imagine the BTW service also connects to Zen in London, so the latency will be the same.

A change in latency will indicate that the geographical routing has changed (or some sort of other problem).

Zen 900 FTTP here, Norwich CIty Centre. My connection shows a GEA migration on 22/Jun, and though my min ping has improved, throughput is significantly worse. I could always hit 900mbps down prior to migration, now in the evening I'm struggling to get much over 500mbps. I see much more frequent red markers at the top of my TBB ping charts.

This is how my connection changed on the evening of the migration.
https://www.thinkbroadband.com/broadband/monitoring/...

Best next steps?

Edited by jimbof (Sat 02-Jul-22 23:19:49)

In reply to a post by Pheasant:

Is that on the Nokia (and Adtran) units? Thought the MA Huawei stuff had dedicated cards.

The Huawei stuff uses dedicated cards indeed. Not sure on the other two so didn't mention specifics per vendor.

The ECI stuff the PON and Cablelink serving it were apparently on the same card. The cabinets used dedicated cards.

Edited by XGS_Is_On (Sun 03-Jul-22 00:01:19)