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Strange Latency Spike And Packet Loss

deathtrap
Grafter
Posts: 1,063
Thanks: 4
Registered: 23-04-2013

Strange Latency Spike And Packet Loss

Just after 4am  this morning , what caused it, was it the endpoints getting swapped about or the GW ?  i notice that the GW that I'm on has gained a lot of users suddenly, and other GW's have lost users too, A balancing blunder ?
5 REPLIES
Plusnet Staff
Plusnet Staff
Posts: 6,346
Thanks: 31
Fixes: 5
Registered: 26-11-2011

Re: Strange Latency Spike And Packet Loss

There was some work being carried out overnight (PW235013) where engineers were reloading new code onto the line cards, this happened between 02:00-06:00 - this affected a number of different area codes and was done in stages, chances are it hit your connection later on in the night.
Chris Pettitt
Cloud Environments Engineer
deathtrap
Grafter
Posts: 1,063
Thanks: 4
Registered: 23-04-2013

Re: Strange Latency Spike And Packet Loss

Maybe so, well ( PW23528Cool may have caused it , as (PW235013) was carried out on the 25/02/14 according to the Zen status checker and i didn't observe any oddities on that date,
But that's for the reply chris
Plusnet Staff
Plusnet Staff
Posts: 6,346
Thanks: 31
Fixes: 5
Registered: 26-11-2011

Re: Strange Latency Spike And Packet Loss

Ah apologies, I was looking at the wrong date - of course it was PW235288 (I forgot to check the date that had changed at midnight).
Let us know if you notice any further oddities though Smiley
Chris Pettitt
Cloud Environments Engineer
Community Veteran
Posts: 6,824
Thanks: 1
Registered: 27-10-2012

Re: Strange Latency Spike And Packet Loss

Sometimes that Zen checker can be a bit misleading - because even if your area code is listed, the work might be at another exchange or node linked to yours. Also some work might be 20CN/21CN/Ethernet service etc.
Like for me - I live in Milton Keynes and there was some planned engineering work done last week with my area code listed for the work. But the work was done at a Slough node which would not affect me at all...
I am pretty sure Chris can see whether your broadband circuit is affected by any PEWs from BTw's systems.
Quote
BT PEW Reference No: PW235288 [TVC_Impact]
Planned duration details:
Planned start: 26/02/2014 02:00
Planned finish: 26/02/2014 06:00
End User Impact Statement:
A statement and impact to End User for the work being undertaken is shown here:
The Planned Engineering Work is required on the Broadband Nodes within the (Manchester Irwell) region that support EU's nationwide for completion of (Software Upgrade). There will be (one) service outage to End-Users of approximately (60) minutes (total) within this period. This outage(s) will occur during the outage window of (02:00:00 - 06:00:00) within this PEW Window. A list of your end users affected is attached to this notification this could be WBC, WBMC and/or HE services. Details of your end users for WBC and WBMC will also be available on Broadband Customer Reporting (BBCR). Please note it may take up to a maximum of 48 hours for the affected circuits to appear on BBCR.

and
Quote
BT PEW Reference No: PW235013
Reason for the maintenance
For BT to carry out software upgrade work on broadband nodes in the Manchester Irwell region.
Maintenance Window/Expected downtime
Start Time: 25 Feb 2014 02:00
End Time: 25 Feb 2014 06:00
deathtrap
Grafter
Posts: 1,063
Thanks: 4
Registered: 23-04-2013

Re: Strange Latency Spike And Packet Loss

Well at least this one didn't disconnect at all. unlike  a previous issue that disconnected me from the net /plusnet for over 20 minutes, i wouldn't mind but i had just started hosting a game, lol,