我正在把头发拉出来。我通过我的一个交换机看到非常糟糕的网络性能（糟糕的数据包丢失）。简而言之，这个问题使 VoIP 无法使用，导致某些应用程序间歇性挂起，真是令人沮丧。
所有设备都使用最新的软件/固件完全更新。
作为测试，我正在运行 iperf3，我的 Switch 24 PoE 和 UDM Pro 之间似乎丢失了数据包。此测试在连接到 UDP Pro 的客户端和在 Switch 24 上运行的服务器之间运行：
Accepted connection from 10.0.0.22, port 58682
[ 5] local 10.0.0.5 port 5201 connected to 10.0.0.22 port 53440
[ ID] Interval Transfer Bitrate Jitter Lost/Total Datagrams
[ 5] 0.00-1.00 sec 104 KBytes 852 Kbits/sec 0.437 ms 0/13 (0%)
[ 5] 1.00-2.00 sec 80.0 KBytes 655 Kbits/sec 0.393 ms 8/18 (44%)
[ 5] 2.00-3.00 sec 112 KBytes 917 Kbits/sec 3.333 ms 0/14 (0%)
[ 5] 3.00-4.00 sec 80.0 KBytes 655 Kbits/sec 2.022 ms 8/18 (44%)
[ 5] 4.00-5.00 sec 112 KBytes 917 Kbits/sec 1.793 ms 0/14 (0%)
[ 5] 5.00-6.00 sec 80.0 KBytes 655 Kbits/sec 1.255 ms 8/18 (44%)
[ 5] 6.00-7.00 sec 112 KBytes 917 Kbits/sec 0.992 ms 0/14 (0%)
[ 5] 7.00-8.00 sec 40.0 KBytes 328 Kbits/sec 1.144 ms 13/18 (72%)
[ 5] 8.00-9.00 sec 112 KBytes 917 Kbits/sec 0.959 ms 0/14 (0%)
[ 5] 9.00-10.00 sec 80.0 KBytes 656 Kbits/sec 0.844 ms 8/18 (44%)
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Jitter Lost/Total Datagrams
[ 5] 0.00-10.01 sec 912 KBytes 746 Kbits/sec 0.844 ms 45/159 (28%) receiver
如您所见，损失约为 28%，这对于本地网络上的短跳来说是可怕的。
当客户端和服务器都连接到 UDM Pro 时，我得到以下结果：
Accepted connection from 10.0.0.22, port 58784
[ 5] local 10.0.0.10 port 5201 connected to 10.0.0.22 port 59176
[ ID] Interval Transfer Bitrate Jitter Lost/Total Datagrams
[ 5] 0.00-1.00 sec 120 KBytes 983 Kbits/sec 0.408 ms 0/15 (0%)
[ 5] 1.00-2.00 sec 128 KBytes 1.05 Mbits/sec 0.300 ms 0/16 (0%)
[ 5] 2.00-3.00 sec 128 KBytes 1.05 Mbits/sec 0.556 ms 0/16 (0%)
[ 5] 3.00-4.00 sec 128 KBytes 1.05 Mbits/sec 0.410 ms 0/16 (0%)
[ 5] 4.00-5.00 sec 128 KBytes 1.05 Mbits/sec 0.377 ms 0/16 (0%)
[ 5] 5.00-6.00 sec 128 KBytes 1.05 Mbits/sec 0.503 ms 0/16 (0%)
[ 5] 6.00-7.00 sec 128 KBytes 1.05 Mbits/sec 8.344 ms 0/16 (0%)
[ 5] 7.00-8.00 sec 128 KBytes 1.05 Mbits/sec 3.167 ms 0/16 (0%)
[ 5] 8.00-9.00 sec 128 KBytes 1.05 Mbits/sec 1.454 ms 0/16 (0%)
[ 5] 9.00-10.00 sec 128 KBytes 1.05 Mbits/sec 0.628 ms 0/16 (0%)
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bitrate Jitter Lost/Total Datagrams
[ 5] 0.00-10.01 sec 1.24 MBytes 1.04 Mbits/sec 0.628 ms 0/159 (0%) receiver
因此，仅使用 UDP Pro 显然没有问题。
在进行 icmp 测试/ping 时，它似乎丢弃了所有其他数据包，所以它看起来像：
64 bytes from 10.0.0.251: icmp_seq=1481 ttl=64 time=7.697 ms
Request timeout for icmp_seq 1482
64 bytes from 10.0.0.251: icmp_seq=1483 ttl=64 time=1.348 ms
Request timeout for icmp_seq 1484
64 bytes from 10.0.0.251: icmp_seq=1485 ttl=64 time=2.794 ms
Request timeout for icmp_seq 1486
64 bytes from 10.0.0.251: icmp_seq=1487 ttl=64 time=1.298 ms
Request timeout for icmp_seq 1488
64 bytes from 10.0.0.251: icmp_seq=1489 ttl=64 time=1.959 ms
Request timeout for icmp_seq 1490
64 bytes from 10.0.0.251: icmp_seq=1491 ttl=64 time=9.319 ms
Request timeout for icmp_seq 1492
64 bytes from 10.0.0.251: icmp_seq=1493 ttl=64 time=1.525 ms
任何想法或建议都会非常有帮助 - 在此先感谢。