windows-server-2012 – Receiver将TCP窗口大小限制为64,512(3)
发布时间:2021-03-14 20:48 所属栏目:117 来源:网络整理
导读:接收器SYN No. Time Source Destination Protocol Length Delta Sequence number Acknowledgment number Bytes in flight Calculated window size Info 817 5.110501000 10.11.0.1 10.10.0.21 TCP 70 0.073924000 0
接收器SYN No. Time Source Destination Protocol Length Delta Sequence number Acknowledgment number Bytes in flight Calculated window size Info 817 5.110501000 10.11.0.1 10.10.0.21 TCP 70 0.073924000 0 1 64512 5001→49758 [SYN,ACK,ECN] Seq=0 Ack=1 Win=64512 Len=0 MSS=1460 WS=1 SACK_PERM=1 [ETHERNET FRAME CHECK SEQUENCE INCORRECT] Frame 817: 70 bytes on wire (560 bits),70 bytes captured (560 bits) on interface 0 Ethernet II,Src: aa:bb:cc:dd:ee:ff,Dst: 00:11:22:33:44:55 Internet Protocol Version 4,Src: 10.11.0.1 (10.11.0.1),Dst: 10.10.0.21 (10.10.0.21) Transmission Control Protocol,Src Port: 5001 (5001),Dst Port: 49758 (49758),Ack: 1,Len: 0 Source Port: 5001 (5001) Destination Port: 49758 (49758) [Stream index: 73] [TCP Segment Len: 0] Sequence number: 0 (relative sequence number) Acknowledgment number: 1 (relative ack number) Header Length: 32 bytes .... 0000 0101 0010 = Flags: 0x052 (SYN,ECN) Window size value: 64512 [Calculated window size: 64512] Checksum: 0xb5bb [validation disabled] Urgent pointer: 0 Options: (12 bytes),SACK permitted Maximum segment size: 1460 bytes No-Operation (NOP) Window scale: 0 (multiply by 1) Kind: Window Scale (3) Length: 3 Shift count: 0 [Multiplier: 1] No-Operation (NOP) No-Operation (NOP) TCP SACK Permitted Option: True [SEQ/ACK analysis] 序列图的接收器透视图 TCP窗口 我已将此视为特定于驱动程序的问题;在我的情况下,QLogic网络控制器试图使用TCPChimney.此链接描述了Windows 2008中添加的TCPChimney功能 – 但我很确定它仍然适用: https://support.microsoft.com/en-us/kb/951037我建议按顺序测试以下内容;每次测试后,重新启动并查看接收器是否按预期开始增加TCP RWIN. 1)在接收计算机上加载网络适配器的最新版本的驱动程序. (与评论相反“超过65k的大TCP窗口大小对服务器不利,因为那时连接的内存需求增加.单独65k也可能不会让你足够开心.– user303507 2015年8月6日11:30”,大TCP接收Windows本身对服务器不利.在高带宽,高延迟链路(如卫星中继)的情况下,需要大的RWIN值,以便我们在“管道”中有更多的TCP数据.想象一下600 Mbps的连接,延迟为3000毫秒;高带宽链路将限制在大约20 KBps;因为一次只有65 KB的未确认TCP数据可能“在管道中”.) (编辑:ASP站长网) |
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