Help with Home Network... I'm pulling my hairs out

[WereCat]

Hi, so I've bough a new Switch, it's a D-Link DGS-108GL 8x1Gbps RJ45 Unmanaged switch.

 

I want to use it to get internet to my PC room which has 2x RJ45 UTP Cat5e cable routed trough the walls from the switch room and also to a room that's going to get some use later. Same cables and also 2x.

My issue is that the moment I route the internet connection trough switch as seen in the 1st image below... I get internet issues. I can watch YT fine because it manages to buffer enough but Steam frequently disconnects, Discord voice chat is lagging and also it takes ages to start up Discord. Also in WIndows I can see the Internet connection momentarily change to No Internet.

 

The cables going trough wall are fine. Tested with cable tester 2 days ago when a friend thats working for an ISP was helping me with snapping on new RJ45 jacks for the newer B standard since all of them were using the old A standard.

I havent tested the cables used for Bridge from Modem to Switch but I've used one of them for quite some time before I moved so I'm quite sure at least that one is working. I had also one extra spare one which behaves likewise.

 

If I route internet straight to any of the wall jacks without switch, it works fine.

 

 

Both RED and GREEN work fine when routed directly without switch but both have issues when routed trough switch.

 

HOWEVER, if I use my old 100Mbps switch, it works fine with the exact same cables in the exact same configuration.

 

 

 

So naturaly I thought the new switch is bad. But when I move the new switch between UPS and PC, it works fine with the same cables that were used for Bridge before (from Switch to PC)! (using UPS for dataline protection)

 

I've tried setting a static IP adress for my PC but that did not resolve the issue. I've tried increasing the Receive and Transmin buffer on my PC INTEL NIC from default values to 2048 but it did not help. Also tried changing to FullDuplex 1.0Gbps.

 

I don't know where could be the issue anymore. Anyone has any clue? I am ready to return the new switch and just keep using the old 100Mbps one instead since it works... but at 10x less speed.

 

I'm using Cat5e cables.

 

[AbydosOne]

2 minutes ago, WereCat said:

using UPS for dataline protection

Take this out. My UPS only gave me trouble when I had networking running through it, and it won't make any difference where it's placed in the network anyways (more for putting immediately between modem and router).

[WereCat]

13 minutes ago, AbydosOne said:

Take this out. My UPS only gave me trouble when I had networking running through it, and it won't make any difference where it's placed in the network anyways (more for putting immediately between modem and router).

Looks like you're right which now makes me even more confused.

 

So if I go directly from wall to PC without UPS it works with the new switch.

 

But as I mentioned before... if I put new switch between UPS and PC it works as well but for some reason this same scenario does not work without switch? Why?  And why does this also work when I use the old switch as in 1st image but not with new switch?

[AbydosOne]

1 minute ago, WereCat said:

And why does this also work when I use the old switch as in 1st image but not with new switch?

100M is a lot more noise tolerant than 1G, and I'm pretty sure the UPS surge protection on those ports was never updated for/intended for 1G.

[WereCat]

2 minutes ago, AbydosOne said:

100M is a lot more noise tolerant than 1G, and I'm pretty sure the UPS surge protection on those ports was never updated for/intended for 1G.

 

they claim it is for 1Gbps though... but thanks anyways.

 

Also I intend to put UPS between modem as you suggested but I removed it today because it's in my bedroom and it was buzzing a lot and the LED could not be turned off so I'm going to return it and try luck with a different one. The one next to my PC is dead silent but unfortunately is too expensive to buy the same model just for modem as well.

[Hairless Monkey Boy]

It must have something to do with the signal output from the switch. It might be less strong or more noisy than the one output from the router, so it is affected more by additional noise or whatever from the UPS.

[WereCat]

@Hairless Monkey Boy @AbydosOne

just so that I don't have to make new topic ... if I have an UPS with RJ45 data line protection, can I plug an RJ11 into it for the DSL modem? I've read the RJ11 is compatible with RJ45 (less wide since 4 pins instead of 8).

[AbydosOne]

Just now, WereCat said:

@Hairless Monkey Boy @AbydosOne

just so that I don't have to make new topic ... if I have an UPS with RJ45 data line protection, can I plug an RJ11 into it for the DSL modem? I've read the RJ11 is compatible with RJ45 (less wide since 4 pins instead of 8).

I believe so, yes.

[Kilrah]

2 hours ago, WereCat said:

@Hairless Monkey Boy @AbydosOne

just so that I don't have to make new topic ... if I have an UPS with RJ45 data line protection, can I plug an RJ11 into it for the DSL modem? I've read the RJ11 is compatible with RJ45 (less wide since 4 pins instead of 8).

The bit from the instructions you pasted earlier even says so