Question Packet loss only one one device using specific programs

[Rhys556]

Hello,

I've been trying to solve this one for a while with no luck or improvement to be seen.
I am currently experiencing packet loss on a singular device within my network, This is only experienced when using the battle.net application or any games that utilize it.

The device in question is a desktop that is wired using Cat6E through a switch but I have removed the switch and the issue persists. The switch is now back in place.

The PC currently has the following components:
Ryzen 7 7800X3D
Gigabyte RTX3080Ti
Gigabyte B650 AORUS ELITE AX V2

However this issue was also present prior to upgrading to the X3D at which point it was:
ASUS PRIME B550-PLUS
Ryzen 7 3700x
Gigabyte RTX3080Ti

The connection in use is currently a 900/90 FTTC connection however again this was present on the old 350/50 FTTC connection
(Currently using the ISP router which was upgraded with the package upgrade)

Connected to this network:
2 PC's ( one of which is the effected device) both connected through separate TL-SG105E switches
2 Laptops - Wirelessly
A myriad of other wireless devices-

No other device has any issues and the impacted device only has an issue when using the battle.net software.

Using pingplotter I can see that it is reporting the loss at 192.168.0.1
However ping -t 8.8.8.8 and ping -t 192.168.0.1 were running alongside this and I saw request timeouts to 8.8.8.8 and consistent 1ms replies from 192.168.0.1

 

[Ralston18]

You bypassed the switch - correct? That would be an expected troubleshooting effort.

What about swapping in another known working (no packet losses) Ethernet cable?

With and without the switch.

 

[Rhys556]

Unfortunately an alternate cable isn't as easy as it sounds for this device as it is a cable that is run external to the property. However there is never any network related issues to this device when not using battle.net software which indicates to me there is likely not fault with the cable.

And yes I have tested without the switch in place. I have also tested one of the laptops present with my external cable and also had no issues.

 

[Ralston18]

There could be other reasons.

This:

"as it is a cable that is run external to the property."

Where does that cable come from/go? Devices and connections?

Explain.

 

[Rhys556]

That cable comes straight from the ISP router in place and then runs outside the property and through the wall into the converted garage the device in question is located in. It is tacked to the wall surrounding the property and is "outdoor rated" cabling I have inspected the cable and see no visible indication of damage.

That then enters the switch that is used to connect device within the garage

 

[Rhys556]

If the fault was with the cable I would expect to see consistent loss to all devices within the garage. but it is a singular device in the garage that experiences this and solely when using battle.net related games which would suggest something logical to me.

 

[Ralston18]

Who has full admin rights to that ISP router?

 

[Rhys556]

I have as much access as they'll allow

 

[bill001g]

So how do you know it is actual network data loss and not some issue with battlenet. All the equipment in your house including the router does not care what IP you are talking to and it especially does not care what type of data is inside the data packets.

It all pretty much follows the same path. Your pc gives all data to the mac address of the router. The router will extract the destination IP and port purely for NAT it does the same for all applications. it then forwards the data to the ISP.

If you leave a constant ping run to 8.8.8.8 in the background does that also show packet loss when battlenet is having a issue.

Maybe try to disable IPv6 support in your pc. Not likely the issue but if battlenet is using IPv6 it can follow a different path in the internet. I think battlenet uses IPv4 so it likely will have no impact. In general most people can turn off IPv6 support and will never need it.

 

[Rhys556]

When experiencing the issue I have recently started running two pings in the background alongside a pingplotter
ping -t 8.8.8.8 in cmd shows a request timeout
ping -t 192.168.0.1 shows nothing unusual and no timeouts
The ping plotter to 8.8.8.8 shows loss to 192.168.0.1

I have IPv6 disabled on the device and the issue persists

 

[Ralston18]

This:

"I have as much access as they'll allow".

Who is "they".

You either have admin rights to the router or you do not.

Which means that "they" may be blocking/limiting the use of battle.net.

Go talk with "they".

Closing thread to further posts.