The LAN speed of the switch is normal, but the network speed is not up to speed

seansha

background

China Unicom's 200M broadband can be dialed multi-dial, J900 soft routing is a single system, and iperf3 LAN speed measurement is 930M

Category 6 network cable 1Mx3 sg105 PRO simple managed switch

Test Method:

1. The computer is directly connected to the soft router with a network cable, and the network speed is 500M, and the speed is not dropped or floating, and the iperf3 LAN speed is 933M

2. Router network cable

Connect the switch, and then connect the computer through the switch network cable, the network speed test is 180-300M, and the iperf3 speed test is 930M

The above two tests have been replaced with network cables to ensure that there is no problem with the network cables

What is the cause of this problem and how to solve it?

szler

What else could be the reason for that. The router speed is not good

fcmalidni

If the computer-soft routing is fine, it means that the computer and the routing are OK
If you are a soft router-switch-computer, and there is a problem with the test, then you must have a switch problem, and you need to look at the switch settings
You can dial up the optical modem - switch - computer, and the computer to see if it can reach 200M stability

stevemorrislian

The speed test software gives you fake results

seansha

Steve Morrislian on 2019-6-24 16:11
The speed test software gives you fake results

The speed of downloading things is up to 30M, and you can't go up.

seansha

fcmalidni on 2019-6-24 16:05
If the computer-soft routing is fine, it means that the computer and the routing are OK
If you are a soft router-switch-computer, there is a problem with the test, then you must have ...

200M can stabilize the speed of 250, and it can be turned into 500M by double dialing
The speed is normal if you don't connect the switch, and the download is also 500M
When the switch is connected, the speed becomes back to 200M
The switch configuration is the default half mode
The intranet iperf is measured by the switch speed 950M.

seansha

szler 2019-6-24 15:57
What else could be the reason for that. The router speed is not good

The speed of the route directly connected to the computer is normal, the speed of the external network of the switch is cut, and the internal network is still gigabit.

LGA1150

Has the switch set a speed limit?

fcmalidni

Seansha Posted on 2019-6-30 15:26
200M can stabilize the speed of 250, and it can be turned into 500M by double dialing
The speed is normal if you don't connect the switch, and the download is also 500M
Connected to the switch speed ...

That's a problem with the settings of your switch, you have to take a look

seansha

fcmalidni on 2019-6-30 16:12
That's a problem with the settings of your switch, you have to take a look

The switch configuration is all default, and no rate limit is set