Question Low bandwidth using ethernet cable ?

[MukuroRokudo]

Hi,

Does anyone know how any solution for this --

I have 500Mbps Internet for DL/UL.
I am getting just fine DL/UL speed using WiFi but when I am connected using LAN cable (cat6) I am only getting around 90-150mbps
Funny part is when I do speed test at speedtest.net, I can see the DL speed from 500Mbps at start then it slow goes down to 90-150mbps.

I actually have a Router (MiLot AX3600) connected to my ISP's modem. If I connect the LAN cable directly from the ISP's modem, it is working fine but I don't want to connect thru it since it has a real bad ping that is why I bought a router for it. Also, I was able to use it before without problem.

 

[Ralston18]

This router?

https://www.mi.com/global/product/mi-aiot-router-ax3600/

= = = =

Connection path being similar to the following line diagram where ---> represents an Ethernet cable:

ISP ---(Coax, DSL, Fiber)--->ISP Modem --->[WAN Port] MiLot Router[LAN Ports] ---> Wired devices and ~~~> Wireless devices.

Feel free to edit and correct my line diagram as necessary. Look at the ISP's modem for make and model information.

= = = =

Since you connected your own router, doublecheck that the ISP's modem's DHCP functions are disabled.

Only one device, either the ISP's modem (possibly modem/router) should have DHCP enabled.

Also again run the ping tests (referencing your mention of "bad pings") and then copy and paste the results here.

Did you use "ping", "pathping", "tracert"? What IP address was targeted?

Lastly on your main computer run "ipconfig /all". Copy and paste those results as well.

 

[MukuroRokudo]

I have tried my OLD pc, connected the router thru LAN with a different ethernet cable and it works fine. But when I used the same connection to my NEW pc, that is when I am getting the speed from 500mbps dropping to 100mbps. Anyone aware of this issue and has a solution?

Win11 Pro
Board is Asus ROG Strix X670E-A

 

[MukuroRokudo]

This router?

https://www.mi.com/global/product/mi-aiot-router-ax3600/

= = = =

Connection path being similar to the following line diagram where ---> represents an Ethernet cable:

ISP ---(Coax, DSL, Fiber)--->ISP Modem --->[WAN Port] MiLot Router[LAN Ports] ---> Wired devices and ~~~> Wireless devices.

Feel free to edit and correct my line diagram as necessary. Look at the ISP's modem for make and model information.

= = = =

Since you connected your own router, doublecheck that the ISP's modem's DHCP functions are disabled.

Only one device, either the ISP's modem (possibly modem/router) should have DHCP enabled.

Also again run the ping tests (referencing your mention of "bad pings") and then copy and paste the results here.

Did you use "ping", "pathping", "tracert"? What IP address was targeted?

Lastly on your main computer run "ipconfig /all". Copy and paste those results as well.

https://www.facebook.com/stories/1630749046935505/UzpfSVNDOjE4NzA2ODM4NDM1OTkxNA==/?view_single=1

I have tried my OLD pc, connected the router thru LAN with a different ethernet cable and it works fine. But when I used the same connection to my NEW pc, that is when I am getting the speed from 500mbps dropping to 100mbps. Anyone aware of this issue and has a solution?

Win11 Pro
Board is Asus ROG Strix X670E-A

 

[Ralston18]

On NEW PC run "ipconfig /all" as well as the other commands suggested above.

Post the results.

= = = =

Other things to do:

Verify that the NEW PC does not have two network adapters enabled.

Verify that Speed and Duplex is set to auto.

Disable IPv6.

 

[MukuroRokudo]

On NEW PC run "ipconfig /all" as well as the other commands suggested above.

Post the results.

= = = =

Other things to do:

Verify that the NEW PC does not have two network adapters enabled.

Verify that Speed and Duplex is set to auto.

Disable IPv6.

Windows IP Configuration

Host Name . . . . . . . . . . . . : DESKTOP-QTUM33U
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Ethernet:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) Ethernet Controller (3) I225-V
Physical Address. . . . . . . . . : 08-BF-B8-BE-1F-06
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::ed47:bd11:727b:f737%27(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.31.33(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Thursday, October 12, 2023 7:59:54 PM
Lease Expires . . . . . . . . . . : Friday, October 13, 2023 7:59:53 AM
Default Gateway . . . . . . . . . : 192.168.31.1
DHCP Server . . . . . . . . . . . : 192.168.31.1
DHCPv6 IAID . . . . . . . . . . . : 453558200
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-2C-B4-B7-82-E0-E1-A9-34-40-49
DNS Servers . . . . . . . . . . . : 192.168.31.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Bluetooth Network Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network)
Physical Address. . . . . . . . . : 74-97-79-D8-55-F8
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

 

[MukuroRokudo]

I tried to downgrade back to win10 just to see but nothing changes. Issue still persist.
Today I tried to connect my old pc to the ISP modem directly and got 500mbps+ and then tried to connect it directly to the AX3600 Router and got 500mbps+. Tried that with this new heavy pc and have that dropping from 500mbps to 100mbps again in both ISP modem or AX3600 router.

 

[Ralston18]

Per "ipconfig /all" NEW PC is requested a DHCP IP address from a Gateway at 192.168.31.1 and received the DHCP IP address of 192.168.31.33

Default AX3600 Router IP being 192.168.31.1

= = = =

On NEW PC (Host Name = DESKTOP-QTUM33U):

- Verify that Speed and Duplex is set to auto.

- Change the DNS Servers to 8.8.8.8 and 8.8.4.4 (Google).

- Disable IPv6.

= = = =

Is DHCP disabled on the ISP provided modem?

AX3600 Router:

- Should not really make a difference but I would increase the Lease time from 24 hours to at least a week if possible.

Results from "ping", "pathping", and "tracert"? Target the Google IP addresses. The commands may take a few minutes to run.

 

[MukuroRokudo]

Is DHCP disabled on the ISP provided modem? -- not really and i am not sure if it does make a difference since its just fine with other PC and laptop.

- Should not really make a difference but I would increase the Lease time from 24 hours to at least a week if possible. --- how to do this??


PING result
C:\Users\Aldwin>ping google.com

Pinging google.com [142.251.220.206] with 32 bytes of data:
Reply from 142.251.220.206: bytes=32 time=7ms TTL=59
Reply from 142.251.220.206: bytes=32 time=15ms TTL=59
Reply from 142.251.220.206: bytes=32 time=3ms TTL=59
Reply from 142.251.220.206: bytes=32 time=3ms TTL=59

Ping statistics for 142.251.220.206:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 3ms, Maximum = 15ms, Average = 7ms

PATHPING result
C:\Users\Aldwin>pathping google.com

Tracing route to google.com [142.251.220.206]
over a maximum of 30 hops:
0 DESKTOP-QTUM33U [192.168.31.33]
1 XiaoQiang [192.168.31.1]
2 globebroadband.net [192.168.254.254]
3 10.188.44.25
4 10.155.113.110
5 112.198.249.173
6 * 142.250.174.151
7 142.250.174.150
8 142.251.251.111
9 142.251.238.87
10 mnl07s03-in-f14.1e100.net [142.251.220.206]

Computing statistics for 250 seconds...
Source to Here This Node/Link
Hop RTT Lost/Sent = Pct Lost/Sent = Pct Address
0 DESKTOP-QTUM33U [192.168.31.33]
0/ 100 = 0% |
1 0ms 0/ 100 = 0% 0/ 100 = 0% XiaoQiang [192.168.31.1]
0/ 100 = 0% |
2 0ms 0/ 100 = 0% 0/ 100 = 0% globebroadband.net [192.168.254.254]
0/ 100 = 0% |
3 4ms 0/ 100 = 0% 0/ 100 = 0% 10.188.44.25
0/ 100 = 0% |
4 6ms 0/ 100 = 0% 0/ 100 = 0% 10.155.113.110
0/ 100 = 0% |
5 3ms 0/ 100 = 0% 0/ 100 = 0% 112.198.249.173
0/ 100 = 0% |
6 3ms 0/ 100 = 0% 0/ 100 = 0% 142.250.174.151
0/ 100 = 0% |
7 4ms 0/ 100 = 0% 0/ 100 = 0% 142.250.174.150
0/ 100 = 0% |
8 5ms 0/ 100 = 0% 0/ 100 = 0% 142.251.251.111
0/ 100 = 0% |
9 --- 100/ 100 =100% 100/ 100 =100% 142.251.238.87
0/ 100 = 0% |
10 3ms 0/ 100 = 0% 0/ 100 = 0% mnl07s03-in-f14.1e100.net [142.251.220.206]

Trace complete.

tracert result
C:\Users\Aldwin>tracert google.com

Tracing route to google.com [142.251.220.206]
over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms XiaoQiang [192.168.31.1]
2 1 ms <1 ms <1 ms globebroadband.net [192.168.254.254]
3 4 ms 3 ms 3 ms 10.188.44.25
4 4 ms 3 ms 3 ms 10.155.113.110
5 65 ms 7 ms 94 ms 112.198.249.173
6 * * 3 ms 142.250.174.151
7 4 ms 4 ms 4 ms 142.250.174.150
8 5 ms 4 ms 5 ms 142.251.251.111
9 3 ms 4 ms 3 ms 142.251.238.87
10 4 ms 4 ms 3 ms mnl07s03-in-f14.1e100.net [142.251.220.206]

Trace complete.

 

[Ralston18]

Contingent upon the AX3600 being the DHCP Router/Gateway:

The lease time would be configured via the AX3600's admin screens. Enter 192.168.31.1 into the browser. Then provide the login name and password.

= = = =

That said: how/where are the Old PC and Laptop physically connected?

The following line diagram is what I would expect (edit and correct my line diagram as necessary to show the current connections.):

ISP ---(Coax, DSL, Fiber)--->ISP Modem --->[WAN Port] MiLot Router[LAN Port] ---> New PC
[LAN Port] ---> Old PC
[LAN Port] ---> Laptop
[LAN Port] unused

Plus AX3600 wireless ~~~> Wireless devices.

All devices connected to the MiLot Router.

ISP Modem having its' DHCP functions disabled.

Are you able to access the ISP modem's admin screens via 192.168.254.254?

 

[MukuroRokudo]

Contingent upon the AX3600 being the DHCP Router/Gateway:

The lease time would be configured via the AX3600's admin screens. Enter 192.168.31.1 into the browser. Then provide the login name and password.

= = = =

That said: how/where are the Old PC and Laptop physically connected?

The following line diagram is what I would expect (edit and correct my line diagram as necessary to show the current connections.):

ISP ---(Coax, DSL, Fiber)--->ISP Modem --->[WAN Port] MiLot Router[LAN Port] ---> New PC
[LAN Port] ---> Old PC
[LAN Port] ---> Laptop
[LAN Port] unused

Plus AX3600 wireless ~~~> Wireless devices.

All devices connected to the MiLot Router.

ISP Modem having its' DHCP functions disabled.

Are you able to access the ISP modem's admin screens via 192.168.254.254?

That said: how/where are the Old PC and Laptop physically connected? -- i connected them one at a time, where in they are working just fine.

ISP Modem -->[LAN PORT]-->Old PC
ISP Modem -->[LAN PORT]-->Laptop
ISP Modem -->[WAN Port]MiLotRouter[LAN Port]-->Old PC
ISP Modem -->[WAN Port]MiLotRouter[LAN Port]-->Laptop

Are you able to access the ISP modem's admin screens via 192.168.254.254? Yes

 

[Ralston18]

To clarify my understanding:

Network connections 1.

ISP Modem --->[LAN PORT]--->Old PC
ISP Modem --->[LAN PORT]--->Laptop

Upload and Download speeds 500 Mbps+

Network connections 2.

ISP Modem --->[WAN Port]MiLotRouter[LAN Port]--->Old PC
ISP Modem ----------------->MiLotRouter[LAN Port]--->Laptop

Upload and Download speeds 500 Mbps+ or is this the configuration where speeds drop to 100 Mbps?

= = = =

Where is New PC connected in when the speeds drop?

= = = =

Edit one of the line diagrams to show the network connections and include all devices.

Show connections where all work at the expected 500Mbps speeds and then again the connections when the speed is below 100Mbps.

For the moment I have two thoughts: 1) New PC is not properly configured and 2) Both the ISP Modem and the MiLot Router are trying to be the Gateway.

On the ISP Modem: is DHCP disabled? Check the admin screens.

 

[MukuroRokudo]

To clarify my understanding:

Network connections 1.

ISP Modem --->[LAN PORT]--->Old PC
ISP Modem --->[LAN PORT]--->Laptop

Upload and Download speeds 500 Mbps+

Network connections 2.

ISP Modem --->[WAN Port]MiLotRouter[LAN Port]--->Old PC
ISP Modem ----------------->MiLotRouter[LAN Port]--->Laptop

Upload and Download speeds 500 Mbps+ or is this the configuration where speeds drop to 100 Mbps?

= = = =

Where is New PC connected in when the speeds drop?

= = = =

Edit one of the line diagrams to show the network connections and include all devices.

Show connections where all work at the expected 500Mbps speeds and then again the connections when the speed is below 100Mbps.

For the moment I have two thoughts: 1) New PC is not properly configured and 2) Both the ISP Modem and the MiLot Router are trying to be the Gateway.

On the ISP Modem: is DHCP disabled? Check the admin screens.

Network connections 1.

ISP Modem --->[LAN PORT]--->Old PC = 500 Mbps+
ISP Modem --->[LAN PORT]--->Laptop = 500 Mbps+
ISP Modem --->[LAN PORT]--->New PC = around 100Mbps

Network connections 2.

ISP Modem --->[WAN Port]MiLotRouter[LAN Port]--->Old PC = 500 Mbps+
ISP Modem --->[WAN Port]MiLotRouter[LAN Port]--->Laptop = 500 Mbps+
ISP Modem --->[WAN Port]MiLotRouter[LAN Port]--->New PC = around 100Mbps

WiFi.
ISP Modem --->[WAN Port]MiLotRouter[WIFI]--->Old PC = 500 Mbps+
ISP Modem --->[WAN Port]MiLotRouter[WIFI]--->Laptop = 500 Mbps+
ISP Modem --->[WAN Port]MiLotRouter[WIFI]--->New PC = around 150Mbps
= = = =


I tried disabling the DHCP in the ISP modem. still the same results.

Sorry, I just noticed that the dowload speed dropping is when I am doing a speedtest on any other speed test site. If you've seen the video I attached before that proves it.
I just tried downloading a large application to see how it works ---

Start Download ---- 500/600Mbps+ ----- drops to 90/100Mbps ------ goes back to 500/600Mbps+ steady----- some few drops to 400 Mbps but goes back to 500/600Mbps+

Hoping this make sense.

 

[bill001g]

Things that only happen for short periods of time are going to be tricky to find, this is not a simple wrong setting.

So before you do lots of testing try a different cable, a new one would be best if you have it. There are massive amounts of fake cable sold now days, that flat cable tends to be the most common. You need nothing real special cat5e is fine but it must be pure copper with wire size 22-24.

What I suspect might be happening is the ethernet port is getting errors and dropping to 100mbps at times. You might get lucky and see this in the ethernet status. It might also show up in the event monitor in windows. This issue is almost always a cable issue but in rare cases can be a bad port in the pc.

Since you have a couple other devices try to test transfer rates between them. This is mostly to try to eliminate strange internet or browser issues. You should be able to see the rates in the resource monitor network tab. You want to copy huge files so they run long enough to see the data....and/or for a random issue to happen. You can also try a old line mode program called IPERF. This is a pretty simplistic software that will test the ports/cables/driver etc but is not affected by things like memory/disk/cpu. You generally seen over 900mbps in both directions. IPERF will run long enough that you might see a random failure if they are happening.

 

[Ralston18]

Very helpful!

Network Connections 1 & 2, and WiFi all clearly indicate that the problem is something with New PC.

Check that Speed and Duplex is set to auto.

Disable IPv6 on New PC

Look for some unexpected or unknown app running on New PC. Use Task Manager, Resource, Monitor, and Process Explorer to look for something different about New PC when compared to Old PC and Laptop.

And there is another easy way to do network adapter configuration comparisons via Powershell.

Open Powershell as admin on each of the three computers.

At the PS> prompt run the following Cmdlet (Copy and Paste permitted):

Get-NetAdapterAdvancedProperty -Name "*"
Reference:

https://learn.microsoft.com/en-us/p...teradvancedproperty?view=windowsserver2022-ps

Specifically Example 1. just as a starting point.

Compare the cmdlet results. Identify specific configuration differences. Keep in mind that some things will be identifical and others will differ specific to the host PC.

The Name should all be your network name. DisplayName and DisplayValues should be compared.

(Note: Take and print out screenshots to make the comparison process easier.)

Example 4.

Get-NetAdapterAdvancedProperty -Name "*" -AllProperties -IncludeHidden

Then, if and as necessary, work throught the other examples and make further comparisons.

Hopefully you will find something on New PC that is different than what both Old PC and Laptop present.

After that you can match New PC to Old PC and Laptop. Remember - change only one thing at a time and do stay out of the registry. Registry editing is the last resort.