软路由+ap, 内网设备间 iperf3 测速低于任何一台设备单独访问互联网?

<p>拓扑大概是这个样子，两个设备都通过 AP 连接，有线部分都是超六类线<br> <img alt="" class="embedded_image" loading="lazy" referrerpolicy="no-referrer" rel="noreferrer" src="https://s3.bmp.ovh/imgs/2022/08/25/dd0d65458bbeee03.jpg"> </p> <p>使用测速网测得<br> PC：319/62Mbps<br> 手机：351/38Mbps<br> 宽带 300/30Mbps ，每个设备访问互联网速度都是正常的，</p> <p>然而设备间访问速度就很慢，无论是 smb 、ftp 、qrcp 传文件，只有 10-20MBps 左右。起初以为是软件优化问题没在意，后怀疑是设备的问题，使用 iperf3 测速，结果让我大吃一惊，内网传输速度竟然比访问互联网还慢？</p> <p>PC：</p> <pre><code><a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="8ffce4f6b6b9bebebecfdcfafde9eeeceadcdadcca">[email&nbsp;protected]</a> ~&gt; iperf3 -s ----------------------------------------------------------- Server listening on 5201 (test #1) ----------------------------------------------------------- Accepted connection from [phoneip], port 44408 [ 5] local [laptopip] port 5201 connected to [phoneip] port 44420 [ ID] Interval Transfer Bitrate [ 5] 0.00-1.00 sec 7.67 MBytes 64.3 Mbits/sec [ 5] 1.00-2.00 sec 11.1 MBytes 92.8 Mbits/sec [ 5] 2.00-3.00 sec 15.3 MBytes 128 Mbits/sec [ 5] 3.00-4.00 sec 10.5 MBytes 88.2 Mbits/sec [ 5] 4.00-5.00 sec 15.1 MBytes 127 Mbits/sec [ 5] 5.00-6.00 sec 14.3 MBytes 120 Mbits/sec [ 5] 6.00-7.00 sec 16.6 MBytes 139 Mbits/sec [ 5] 7.00-8.00 sec 13.9 MBytes 116 Mbits/sec [ 5] 8.00-9.00 sec 16.7 MBytes 140 Mbits/sec [ 5] 9.00-10.00 sec 14.6 MBytes 122 Mbits/sec [ 5] 10.00-10.05 sec 539 KBytes 84.3 Mbits/sec - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate [ 5] 0.00-10.05 sec 136 MBytes 114 Mbits/sec receiver </code></pre> <p>Phone:</p> <pre><code><a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="84f1b4dbe5b5b3b7c4e8ebe7e5e8ecebf7f0">[email&nbsp;protected]</a> ~&gt; iperf3 -c surfacesuse.lan Connecting to host surfacesuse.lan, port 5201 [ 5] local [phoneip] port 44420 connected to [laptopip] port 5201 [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-1.00 sec 8.25 MBytes 69.2 Mbits/sec 91 143 KBytes [ 5] 1.00-2.00 sec 11.2 MBytes 94.1 Mbits/sec 0 229 KBytes [ 5] 2.00-3.00 sec 15.1 MBytes 127 Mbits/sec 0 308 KBytes [ 5] 3.00-4.00 sec 10.9 MBytes 91.5 Mbits/sec 0 354 KBytes [ 5] 4.00-5.00 sec 14.6 MBytes 122 Mbits/sec 0 409 KBytes [ 5] 5.00-6.00 sec 14.8 MBytes 124 Mbits/sec 0 456 KBytes [ 5] 6.00-7.00 sec 16.1 MBytes 135 Mbits/sec 0 505 KBytes [ 5] 7.00-8.00 sec 14.1 MBytes 118 Mbits/sec 0 542 KBytes [ 5] 8.00-9.00 sec 16.8 MBytes 141 Mbits/sec 0 584 KBytes [ 5] 9.00-10.00 sec 14.5 MBytes 122 Mbits/sec 0 618 KBytes - - - - - - - - - - - - - - - - - - - - - - - - - [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 136 MBytes 114 Mbits/sec 91 sender [ 5] 0.00-10.05 sec 136 MBytes 114 Mbits/sec receiver iperf Done. </code></pre> <p>尝试过：</p> <ul> <li>增大 iperf3 线程数，丢包重发更多，速度更慢了</li> <li>重启路由器 /AP</li> <li>AP 位接入交换机，PC 使用有线连接<br> 均无成效。还有什么排查的方法吗？</li> </ul>