☰

RDP 连接不稳定，但 ping 正常

tag-icon • tag-icon windows-10 vpn remote-desktop
RDP 连接不稳定，但 ping 正常

我使用 VPN（PPTP）+远程桌面连接到我的工作机器（均运行 Windows 10）。

远程桌面连接并不像我希望的那样稳定：通常情况下，一切都很好并且响应迅速，但每隔 0.5-3 分钟，连接就会“挂起”几秒钟，然后出现“重新连接”窗口，再过一秒钟我就可以继续工作了。“连接尝试”计数器从未超过 1。

RDP 重新连接

这有点烦人，所以我试图找出原因。我尝试从 RDP 客户端 ping RDP 服务器，结果如下：

C:\Users\Heinzi>ping -t <myHostName>

Pinging <myHostName> [<myIpAddress>] with 32 bytes of data:
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=29ms TTL=127
Reply from <myIpAddress>: bytes=32 time=23ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=34ms TTL=127
Reply from <myIpAddress>: bytes=32 time=27ms TTL=127
Reply from <myIpAddress>: bytes=32 time=21ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=34ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=23ms TTL=127
Reply from <myIpAddress>: bytes=32 time=27ms TTL=127
Reply from <myIpAddress>: bytes=32 time=28ms TTL=127
Reply from <myIpAddress>: bytes=32 time=28ms TTL=127
Reply from <myIpAddress>: bytes=32 time=31ms TTL=127
Reply from <myIpAddress>: bytes=32 time=28ms TTL=127
Reply from <myIpAddress>: bytes=32 time=28ms TTL=127
Reply from <myIpAddress>: bytes=32 time=28ms TTL=127
Reply from <myIpAddress>: bytes=32 time=23ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=37ms TTL=127
Reply from <myIpAddress>: bytes=32 time=28ms TTL=127
Reply from <myIpAddress>: bytes=32 time=39ms TTL=127
Reply from <myIpAddress>: bytes=32 time=39ms TTL=127
Reply from <myIpAddress>: bytes=32 time=27ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=31ms TTL=127
Reply from <myIpAddress>: bytes=32 time=23ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=31ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=23ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=20ms TTL=127
Reply from <myIpAddress>: bytes=32 time=21ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=28ms TTL=127
Reply from <myIpAddress>: bytes=32 time=28ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=21ms TTL=127
Reply from <myIpAddress>: bytes=32 time=21ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=29ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=23ms TTL=127
Reply from <myIpAddress>: bytes=32 time=34ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=28ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=30ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=29ms TTL=127
Reply from <myIpAddress>: bytes=32 time=23ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=27ms TTL=127
Reply from <myIpAddress>: bytes=32 time=27ms TTL=127
Reply from <myIpAddress>: bytes=32 time=28ms TTL=127
Reply from <myIpAddress>: bytes=32 time=21ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=23ms TTL=127
Reply from <myIpAddress>: bytes=32 time=23ms TTL=127
Reply from <myIpAddress>: bytes=32 time=29ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=20ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=21ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=20ms TTL=127
Reply from <myIpAddress>: bytes=32 time=34ms TTL=127
Reply from <myIpAddress>: bytes=32 time=29ms TTL=127
Reply from <myIpAddress>: bytes=32 time=23ms TTL=127
Reply from <myIpAddress>: bytes=32 time=23ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=21ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=20ms TTL=127
Reply from <myIpAddress>: bytes=32 time=20ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=29ms TTL=127
Reply from <myIpAddress>: bytes=32 time=27ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=42ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=32ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=30ms TTL=127
Reply from <myIpAddress>: bytes=32 time=27ms TTL=127
Reply from <myIpAddress>: bytes=32 time=42ms TTL=127
Reply from <myIpAddress>: bytes=32 time=23ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=32ms TTL=127
Reply from <myIpAddress>: bytes=32 time=40ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=28ms TTL=127
Reply from <myIpAddress>: bytes=32 time=23ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=27ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=32ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=21ms TTL=127
Reply from <myIpAddress>: bytes=32 time=21ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=20ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Request timed out.
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=29ms TTL=127
Reply from <myIpAddress>: bytes=32 time=33ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=27ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=30ms TTL=127
Reply from <myIpAddress>: bytes=32 time=31ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=23ms TTL=127
Reply from <myIpAddress>: bytes=32 time=32ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=29ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=27ms TTL=127
Reply from <myIpAddress>: bytes=32 time=28ms TTL=127
Reply from <myIpAddress>: bytes=32 time=23ms TTL=127
Reply from <myIpAddress>: bytes=32 time=27ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=42ms TTL=127
Reply from <myIpAddress>: bytes=32 time=29ms TTL=127
Reply from <myIpAddress>: bytes=32 time=29ms TTL=127
Reply from <myIpAddress>: bytes=32 time=31ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=28ms TTL=127
Reply from <myIpAddress>: bytes=32 time=31ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=23ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=29ms TTL=127
Reply from <myIpAddress>: bytes=32 time=27ms TTL=127
Reply from <myIpAddress>: bytes=32 time=34ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Request timed out.
Reply from <myIpAddress>: bytes=32 time=23ms TTL=127
Reply from <myIpAddress>: bytes=32 time=21ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=29ms TTL=127
Reply from <myIpAddress>: bytes=32 time=29ms TTL=127
Reply from <myIpAddress>: bytes=32 time=28ms TTL=127
Reply from <myIpAddress>: bytes=32 time=27ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=31ms TTL=127
Reply from <myIpAddress>: bytes=32 time=31ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=32ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=20ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=23ms TTL=127
Reply from <myIpAddress>: bytes=32 time=27ms TTL=127
Reply from <myIpAddress>: bytes=32 time=34ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=21ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=29ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=27ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=19ms TTL=127
Reply from <myIpAddress>: bytes=32 time=30ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=28ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=27ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=29ms TTL=127
Reply from <myIpAddress>: bytes=32 time=28ms TTL=127
Reply from <myIpAddress>: bytes=32 time=23ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=27ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=50ms TTL=127
Reply from <myIpAddress>: bytes=32 time=20ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=23ms TTL=127
Reply from <myIpAddress>: bytes=32 time=23ms TTL=127
Reply from <myIpAddress>: bytes=32 time=23ms TTL=127
Reply from <myIpAddress>: bytes=32 time=31ms TTL=127
Reply from <myIpAddress>: bytes=32 time=27ms TTL=127
Reply from <myIpAddress>: bytes=32 time=31ms TTL=127
Reply from <myIpAddress>: bytes=32 time=20ms TTL=127
Reply from <myIpAddress>: bytes=32 time=30ms TTL=127
Reply from <myIpAddress>: bytes=32 time=29ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=27ms TTL=127
Reply from <myIpAddress>: bytes=32 time=31ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=34ms TTL=127
Reply from <myIpAddress>: bytes=32 time=29ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=28ms TTL=127
Reply from <myIpAddress>: bytes=32 time=21ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=30ms TTL=127
Reply from <myIpAddress>: bytes=32 time=31ms TTL=127
Reply from <myIpAddress>: bytes=32 time=29ms TTL=127
Reply from <myIpAddress>: bytes=32 time=27ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=23ms TTL=127
Reply from <myIpAddress>: bytes=32 time=28ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=20ms TTL=127
Reply from <myIpAddress>: bytes=32 time=31ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=27ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=28ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=25ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=31ms TTL=127
Reply from <myIpAddress>: bytes=32 time=63ms TTL=127
Reply from <myIpAddress>: bytes=32 time=37ms TTL=127
Reply from <myIpAddress>: bytes=32 time=27ms TTL=127
Reply from <myIpAddress>: bytes=32 time=36ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127
Reply from <myIpAddress>: bytes=32 time=41ms TTL=127
Reply from <myIpAddress>: bytes=32 time=33ms TTL=127
Reply from <myIpAddress>: bytes=32 time=29ms TTL=127
Reply from <myIpAddress>: bytes=32 time=24ms TTL=127
Reply from <myIpAddress>: bytes=32 time=23ms TTL=127
Reply from <myIpAddress>: bytes=32 time=23ms TTL=127
Reply from <myIpAddress>: bytes=32 time=22ms TTL=127
Reply from <myIpAddress>: bytes=32 time=26ms TTL=127

Ping statistics for <myIpAddress>:
    Packets: Sent = 287, Received = 285, Lost = 2 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 19ms, Maximum = 63ms, Average = 26ms

看起来不错，不是吗？（​​是的，我确实看到了两条“请求超时”的字样，但是它们的时间与上面提到的问题不一致。）

由于 ping 正常，我断定网络连接足够稳定。RDP 不稳定还有什么原因？我还能做些什么来找到问题的根源？

相关内容