Weird connection slowdown

Forums › 2degrees (including Slingshot, Orcon, Flip, Stuff Fibre, MyRepublic, 2talk and Vocus) › Weird connection slowdown

bigbadkiwi

85 posts

Master Geek

#270489 12-May-2020 11:04

Hi,

I have a weird issue. I have an Orcon gigabit connection and every so often, seemingly around 11pm, my connection drops down to 94/94. This is a little annoying as I upload most of my local files to the cloud around this time. In the pictures below, it shows my connection dropping down at approx the same time, albeit being a few weeks apart.

Is there something wrong with my fibre connection? Each time I reboot the modem and even the ONT, but it doesn't help.

Below is the speed I 'normally' get

Any help would be appreciated,

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Lizard Networks

#2481772 12-May-2020 11:05

Do you have the Gen 3 ont and using the flat ethernet cable between your modem and ont by chance?

It looks like a 100mbit link between ONT and modem.

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Any comments made are personal opinion and do not reflect directly on the position my current or past employers may have.

bigbadkiwi

85 posts

Master Geek

#2481782 12-May-2020 11:13

hio77:

Do you have the Gen 3 ont and using the flat ethernet cable between your modem and ont by chance?

It looks like a 100mbit link between ONT and modem.

Here is an image of my enable ONT (with lights)

And here is the connection that I normally get, on a good day

All tests are wired, and the whole house is wired with CAT6.

Regards,

Jase2985

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#2481825 12-May-2020 11:45

hio77:

Do you have the Gen 3 ont and using the flat ethernet cable between your modem and ont by chance?

It looks like a 100mbit link between ONT and modem.

but if its normally 1gig and slows down to 90mbps i doubt the OP is changing the Ethernet cable at those times.

boosacnoodle

963 posts

Ultimate Geek

#2481831 12-May-2020 11:57

Looks like the flat ethernet cable. Can you try replacing that with something else?

nbroad

320 posts

Ultimate Geek

#2481835 12-May-2020 12:00

boosacnoodle:

Looks like the flat ethernet cable. Can you try replacing that with something else?

flat cable is a phone, blue is ethernet to the router?

bigbadkiwi

85 posts

Master Geek

#2481840 12-May-2020 12:09

nbroad:

boosacnoodle:

Looks like the flat ethernet cable. Can you try replacing that with something else?

flat cable is a phone, blue is ethernet to the router?

That is correct. The whole network is connected by cat6 ethernet that goes into a modem and then on to my desktop (via ethernet). The flat cable is the phone. The thing is that this only happens at certain times. At other times the connection is at about 910/530

Regards,

Jase2985

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#2481842 12-May-2020 12:12

what are the pings like at those times?

tried a different speed test server when its going slow?

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nbroad

320 posts

Ultimate Geek

#2481855 12-May-2020 12:42

sounds like a cabling issue?

if you lose connection on one of the 8 wires required for gigabit it could drop to 100 Mbps.. maybe temperature related if it happens at certain times?

change the patch leads at each end first? if that doesn't help, check and re-terminate your wiring with a punchdown tool if you have one, at the panel end and the jack end.

edit: from what I can see in the photo, the wiring looks ok on the patch panel.. a little bit dodgey in places with too much un-twist maybe? I can't see the brown pair on your port 6 as it's obscured.

do you have access to a cable tester? maybe useful to check that you have used the same standard on each end (T568A/B)

bigbadkiwi

85 posts

Master Geek

#2481870 12-May-2020 13:04

nbroad:

sounds like a cabling issue?

if you lose connection on one of the 8 wires required for gigabit it could drop to 100 Mbps.. maybe temperature related if it happens at certain times?

change the patch leads at each end first? if that doesn't help, check and re-terminate your wiring with a punchdown tool if you have one, at the panel end and the jack end.

edit: from what I can see in the photo, the wiring looks ok on the patch panel.. a little bit dodgey in places with too much un-twist maybe? I can't see the brown pair on your port 6 as it's obscured.

do you have access to a cable tester? maybe useful to check that you have used the same standard on each end (T568A/B)

It's worked well for the last few years (the pink foam stuff is to meet fire protection standards apparently). Im starting to think that it may be an Orcon (Vocus) server issue. I just did two tests.

Most recent Orcon (Vocus) server test

Most recent test to Vodafone server

The thing is that eventually my connection goes back to approx 920/520 when testing the Vocus server. Im just trying to figure out whether it is my connection or just the Vocus server, which is out of my control.

nbroad

320 posts

Ultimate Geek

#2481894 12-May-2020 13:30

The screenshots in your first post still look like a 100 Mbps link somewhere.

Can you tell from your router, either by logging into it or from LED's, if the link to ONT or to your PC is dropping to 100 Mbps?

Maybe check this during your period of slow speed.

bigbadkiwi

85 posts

Master Geek

#2481909 12-May-2020 13:54

nbroad:

The screenshots in your first post still look like a 100 Mbps link somewhere.

Can you tell from your router, either by logging into it or from LED's, if the link to ONT or to your PC is dropping to 100 Mbps?

Maybe check this during your period of slow speed.

The weird thing is that when the slow down occurs it's symmetrical at about 94/94, which is a very specific speed. Then when I wake up in the morning the speeds are back to semi-normal. I'm leaning towards this being a Vocus serve issue as I just did another test, the first on the Vocus Chch server, and the second to the Vodafone Chch server. The fact that the download speeds (over wired) are vastly different does point to a server issue (I hope).

Most recent test to Orcon (vastly slower d/l)

Most recent test to Vodafone (a lot faster d/l, with obviously higher ping)

nbroad

320 posts

Ultimate Geek

#2481921 12-May-2020 14:11

the maximum theoretical throughput of TCP over Fast Ethernet is about 94.92 Mbps which near enough matches your speed test results, that is why both myself and hio77 suspect a link dropping to 100 Mbps

bigbadkiwi

85 posts

Master Geek

#2482011 12-May-2020 15:10

nbroad:

the maximum theoretical throughput of TCP over Fast Ethernet is about 94.92 Mbps which near enough matches your speed test results, that is why both myself and hio77 suspect a link dropping to 100 Mbps

What do you suspect is causing the quite random changes from gigabit ethernet to fast ethernet then back to gigabit ethernet again? It is interesting that today the vocus d/l is quite low but the upload is near full speed.

cyril7

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#2482019 12-May-2020 15:23

Hi if you look at some of those terminations zoomed up some don't look fully home, and what do the outlets look like, very much an amateur job, maybe a sparkie job?

If those are dodgy connections then changes in temp during the day could cause a leg to drop and next your on 100Mb.

Try plugging the router direct into the ont in the cabinet, I presume it's elsewhere in the lounge currently, see if the drops go away, that would indicate a cable issue as mentioned

Cyril

nbroad

320 posts

Ultimate Geek

#2482021 12-May-2020 15:24

bigbadkiwi:

nbroad:

the maximum theoretical throughput of TCP over Fast Ethernet is about 94.92 Mbps which near enough matches your speed test results, that is why both myself and hio77 suspect a link dropping to 100 Mbps

What do you suspect is causing the quite random changes from gigabit ethernet to fast ethernet then back to gigabit ethernet again? It is interesting that today the vocus d/l is quite low but the upload is near full speed.

I've already suggested above that a physical cabling fault could be the issue.. a flakey termination, a bad patch panel port, bad patch lead, bad rj45 wall socket, bad port on PC NIC or faulty NIC/driver and I've already suggested the seemingly random change to 100 Mbps could be temperature related and I've also suggested you test the cabling and/or log into the router during the slow times to check the negotiated rate.

100 Mbps Fast Ethernet uses two pairs, Gigabit Ethernet uses all 4 pairs.

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