用 iperf3 檢測兩端網路傳輸速度

這是本文件的舊版！

環境 : Ubuntu 20.04
10.20.xx.xx → 1Gbps 網卡
192.168.100.xx → 10Gbps 網卡

graph LR A[10.20.2.42] -- 1Gbps --> B(10.20.2.41) A[192.168.100.42] -- 10Gbps --> B(192.168.100.41) A --> C(Round Rect) B --> D{Rhombus} C --> D

每台主機都需要安裝 iperf3
```
sudo apt install iperf3 -y
```

假設 10.20.2.41 與 10.20.2.252 當 ipfer3 server
```
iperf3 -s
```

看測試範例訊息

root@iserv-ft-41:~# iperf3 -s
-----------------------------------------------------------
Server listening on 5201
-----------------------------------------------------------
Accepted connection from 192.168.100.42, port 54220
[  5] local 192.168.100.41 port 5201 connected to 192.168.100.42 port 54228
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec  1.08 GBytes  9.26 Gbits/sec
[  5]   1.00-2.00   sec  1.09 GBytes  9.40 Gbits/sec
[  5]   2.00-3.00   sec   653 MBytes  5.48 Gbits/sec
[  5]   3.00-4.00   sec  1.04 GBytes  8.92 Gbits/sec
[  5]   4.00-5.00   sec   859 MBytes  7.21 Gbits/sec
[  5]   5.00-6.00   sec  1.07 GBytes  9.23 Gbits/sec
[  5]   6.00-7.00   sec   876 MBytes  7.35 Gbits/sec
[  5]   7.00-8.00   sec   878 MBytes  7.37 Gbits/sec
[  5]   8.00-9.00   sec  1.10 GBytes  9.41 Gbits/sec
[  5]   9.00-10.00  sec  1.07 GBytes  9.19 Gbits/sec
[  5]  10.00-10.00  sec  1.02 MBytes  8.77 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-10.00  sec  9.64 GBytes  8.28 Gbits/sec                  receiver

假設 10.20.2.42 與 10.20.2.251 當 ipfer3 client

```
iperf3 -c 192.168.100.41
```

看測試範例訊息

root@iserv-ft-42:~# iperf3 -c 192.168.100.41
Connecting to host 192.168.100.41, port 5201
[  5] local 192.168.100.42 port 36620 connected to 192.168.100.41 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec   610 MBytes  5.11 Gbits/sec  1231   2.21 MBytes
[  5]   1.00-2.00   sec  1.09 GBytes  9.39 Gbits/sec    0   3.16 MBytes
[  5]   2.00-3.00   sec  1.09 GBytes  9.41 Gbits/sec    0   3.16 MBytes
[  5]   3.00-4.00   sec   876 MBytes  7.35 Gbits/sec  673   3.14 MBytes
[  5]   4.00-5.00   sec   816 MBytes  6.85 Gbits/sec  598    618 KBytes
[  5]   5.00-6.00   sec   440 MBytes  3.69 Gbits/sec  1770   3.14 MBytes
[  5]   6.00-7.00   sec   620 MBytes  5.20 Gbits/sec  2189   1.05 MBytes
[  5]   7.00-8.00   sec  1.09 GBytes  9.39 Gbits/sec    5   1.66 MBytes
[  5]   8.00-9.00   sec   898 MBytes  7.53 Gbits/sec  398    462 KBytes
[  5]   9.00-10.00  sec   846 MBytes  7.10 Gbits/sec  1092   1.44 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  8.27 GBytes  7.10 Gbits/sec  7956             sender
[  5]   0.00-10.00  sec  8.27 GBytes  7.10 Gbits/sec                  receiver

iperf Done.

```
iperf3 -c 10.20.2.41
```

看測試範例訊息

root@iserv-ft-42:~# iperf3 -c 10.20.2.41
Connecting to host 10.20.2.41, port 5201
[  5] local 10.20.2.42 port 38162 connected to 10.20.2.41 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec   115 MBytes   965 Mbits/sec   32    491 KBytes
[  5]   1.00-2.00   sec   112 MBytes   944 Mbits/sec   25    171 KBytes
[  5]   2.00-3.00   sec   112 MBytes   944 Mbits/sec   18    303 KBytes
[  5]   3.00-4.00   sec   111 MBytes   933 Mbits/sec   18    314 KBytes
[  5]   4.00-5.00   sec   112 MBytes   944 Mbits/sec    7    204 KBytes
[  5]   5.00-6.00   sec   111 MBytes   933 Mbits/sec    2    240 KBytes
[  5]   6.00-7.00   sec   112 MBytes   944 Mbits/sec    2    424 KBytes
[  5]   7.00-8.00   sec   111 MBytes   933 Mbits/sec    8    404 KBytes
[  5]   8.00-9.00   sec   112 MBytes   944 Mbits/sec    0    581 KBytes
[  5]   9.00-10.00  sec   111 MBytes   933 Mbits/sec    7    396 KBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  1.10 GBytes   942 Mbits/sec  119             sender
[  5]   0.00-10.00  sec  1.09 GBytes   939 Mbits/sec                  receiver

iperf Done.

網路檢測

用 iperf3 檢測兩端網路傳輸速度

基本測試