Help with hardwire dropping almost 400m!!

[razer121]

Hey guys,
Hopefully someone can help with this rather complicated issue I am having! It would seem that only my hardwired connection my internet is dropping from 500m down to below 100m.. (between 85-90) For context I'm using an Asus Router which replaced my Plusnet one, the network cable is a cat 7 and runs into a Gigabit network switch that is split between two pcs - to fix it I unplug the input cable (a 15-meter cable) then plug it back in and the problem is fixed. However, this is a daily occurrence and getting frustrating now...

I have so far done the following to try and fix it,
Replaced network cables with brand-new ones,
Replaced the actual Netgear Gigabit switch itself,

I am at a loss now as I cannot figure out what to do next? is this a router problem? or something else? any advice is appreciated!

[[GSV]Trig]

Cat7?!

Why

[razer121]

Cat7?!

Why

Because it was cheap i don't need anything more ha

[DanceswithUnix]

I would plug the end on that 15m cable directly into a PC and see what it says and what speed you get.

The obvious answer is that the link is negotiating 100mbit ethernet, not gigabit.

Could try plugging the cable into a different interface on the router's switch as well in case it is a hardware fault on that socket.

[ik9000]

I would plug the end on that 15m cable directly into a PC and see what it says and what speed you get.

The obvious answer is that the link is negotiating 100mbit ethernet, not gigabit.

Could try plugging the cable into a different interface on the router's switch as well in case it is a hardware fault on that socket.

Which router out of interest? when i looked at a few a year or so ago reviews were quite damning of the QoS functionality in premium Asus routers saying it actually impaired performance - to alarming levels. You could try turning it off and see whether it makes a difference.

[Jonatron]

Cat 7 rings alarm bells. Have you got Cat 6 / Cat 5e cables from a reputable brand / source to try?

[Iota]

I would plug the end on that 15m cable directly into a PC and see what it says and what speed you get.

The obvious answer is that the link is negotiating 100mbit ethernet, not gigabit.

Could try plugging the cable into a different interface on the router's switch as well in case it is a hardware fault on that socket.

That would be the first thing to do, just to see if it's the router or the switch causing the problem.

Cat 7 rings alarm bells. Have you got Cat 6 / Cat 5e cables from a reputable brand / source to try?

That's also something to check, not all cables are created equally.

Personally I'd go with the above options to see if it's the router / switch or cabling that's actually causing the problem. Even if you're running 10G networking at home, Cat 7 cables from a non-reputable source are probably a cause for concern...