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不通过 IP 传输

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不通过 IP 传输

我在 Win XP 上使用 netstat 检查 TCP、IP 和 ICMP 的协议传输详细信息。只有 TCP 中有传输。ICMP 没有传输是可以理解的，因为它是用于错误的，而且我认为没有错误，但为什么没有通过 IP 进行传输？

答案1

netstat -s显示每个协议的统计数据，包括 IP 的统计数据。

在我的 XP PC 上（见下文）IP 输出请求=已发送 ICMP 消息+已发送的 TCP 段+重新传输 TCP 段+UDP 数据报已发送。

C:\>netstat -s

IPv4 Statistics

  Packets Received                   = 857789
  Received Header Errors             = 0
  Received Address Errors            = 0
  Datagrams Forwarded                = 0
  Unknown Protocols Received         = 0
  Received Packets Discarded         = 5
  Received Packets Delivered         = 857784
  Output Requests                    = 857442
  Routing Discards                   = 0
  Discarded Output Packets           = 44
  Output Packet No Route             = 0
  Reassembly Required                = 0
  Reassembly Successful              = 0
  Reassembly Failures                = 0
  Datagrams Successfully Fragmented  = 0
  Datagrams Failing Fragmentation    = 0
  Fragments Created                  = 0

ICMPv4 Statistics

                            Received    Sent
  Messages                  8           30
  Errors                    0           0
  Destination Unreachable   0           22
  Time Exceeded             0           0
  Parameter Problems        0           0
  Source Quenches           0           0
  Redirects                 0           0
  Echos                     2           6
  Echo Replies              6           2
  Timestamps                0           0
  Timestamp Replies         0           0
  Address Masks             0           0
  Address Mask Replies      0           0

TCP Statistics for IPv4

  Active Opens                        = 656
  Passive Opens                       = 360
  Failed Connection Attempts          = 4
  Reset Connections                   = 28
  Current Connections                 = 32
  Segments Received                   = 857250
  Segments Sent                       = 856900
  Segments Retransmitted              = 62

UDP Statistics for IPv4

  Datagrams Received    = 495
  No Ports              = 50
  Receive Errors        = 9
  Datagrams Sent        = 450

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