Windows 2000 ?? Windows Server 2003 TCP ???????? ?? ?????

???? ?????? ???? ??????
???? ID: 224829 - ?? ???????? ?? ?????? ??? ?? ?? ???? ???? ???? ??.
??? ?? ??????? ???? | ??? ?? ??????? ????

?? ????? ??

??????

?? ???? ????? ???? ?? ?? Microsoft Windows 2000 ?? Microsoft Windows Server 2003 ??? ?????????? TCP ?????????:
  • TCP ????? ?? ????
  • ?? ??????? TCP ??????
  • Windows ???????? - RFC 1323
  • ??????????? - RFC 1323
  • Wrapped ??????? ??????? (PAWS) ?? ??????? ???????
  • ????? Acknowledgments (SACKS) - RFC 2018
  • TCP Retransmission ??????? ?? ??? Retransmit
????????? ??? ???????????? ?? ????? TCP ???????? ????????? ???? ?? ???? ???

???? ???????

???????????? ???, ????, ?? ????? ?? ????????? ?? ??????? ???? ?? ??? ????? ????? ??? ???? ???????, ??? ?? ????????? ?? ??? ??? ?? ??????? ???? ??? ?? ????? ???????? ??????? ?? ???? ???.. ?????, ????????? ???? ?? ?? ?? ????? ?? ??????????? ???? ???? ???.. ?????? ??????? ?? ???, ????????? ?? ??????? ???? ?? ???? ???? ??? ?? ???.. ???, ??? ??? ?????? ??????? ???? ?? ?? ?? ????????? ?? ???????????? ?? ???? ???.. ????????? ?? ??? ?? ???? ?? ???????????? ???? ?? ????? ?? ???? ??? ???? ??????? ?? ???, Microsoft ?????? ??? ??? ???? ????? ?? ??? ????? ???? ?????? ????? ????::
322756??? ?? ???? ?? Windows ??? ????????? ?? ???????????? ???? ????

TCP ????? ?? ????

TCP ??????? ????? ?? ???? ?? ?? ?????? ???? (??????) ??? ?? ??????? ???? ?? ????? ?????? ?? ???? ???? ?????? ????? ?? acknowledgment ?? ????? ???????????? ????? ?? ?????? ???? ?? ??? ????????? ???? ?????, ???? ???? ?? ???? ?? ?????? ??? ???? ???? Windows TCP/IP ????? self-tune ??????? ???????? ??? ????? ?? ??? ??????? ???? ??? ??, ?? ????? ????????? ?? ??? ??????? ????? ???? ?? ????? ???? ???

?? ????? ???? ?? ???? ???? ?????-coded ??????? ????? ?? ???? ??????? ????; TCP ??? ?? ?????? ???? (MSS), ?? ??????? ????? ?? ????? ???? ?? ?? ?? ?????? ?? ??? ???????? ???? ??? ??????? ????? ???? TCP ????? ???? ?????? ???? ????? ?? ????? utilized receive ????? MSS ?? ???? ?? ?? ???? ?? ??? ???????? ?????? ???

Receive ????? ?? ???? ????????? ????? ????? ?? ???? ??? ??:
  1. ???? ?????? ????? ???? ?? ??? ???? ??? ???? ??????? ?????? advertises 16 K (16384 ??????) ?? ??? receive ????? ?? ???? ???
  2. ??????? ??????? ??, ?? receive ????? ?? ???? ?? ???? MSS ?? ??? ?? ?????? ???? ?? ????
  3. ????? ?? ???? 4 ??? MSS, 64 K ?? ?????? ???? ?? ??? ?? ??? ???????? ?? ?? ?? ?? ????? ?????? (RFC 1323) ???????? ?? ????? ???? ???? ???
???:"Windows ????????" ??? ??????

?????? ???????, ?? ??? ????? ?? ???? ????? ??????? ??? ?? ??? ???? ?? 17,520 ?????? (16 K ???????? 1460-???? ?? ???? ?? ?????) ?? ???? ????? ?? ???? ?? ????????? TCP head ??????, ???? ?? ????? Acknowledgments (SACKS) ?? Timestamps ?? ?????? ???? ?? ?? ???? ???????? ?? ??? ??? ??????? ??????? ???? ?? ??? ?? ?? ???? ??? ?? ?? ?????? TCP ????? ??? ???? ?????? ?????? ?? ???? 20, ?? ??? ?? ?????? ???? ?? ??? ?? ??????

Windows NT ?? ????? ????????? ??? ??? ?????? ??????? ?? ??? ????? ?? ???? ?? 8,760 ?????? ?? ?? 1460-???? ????

??? ??????? ??? ?? ??? receive ????? ?? ???? ??? ????, ???? ?? ??? TcpWindowSize ??? Windows ?? ???? ??????? ?? ??? ??????? ????????? ??????? ??? ??????? ??? ???? ?? ???, ????? ????? ?? ???? ????::
  1. ????? ????,???????????? ????,???????????:regedit?? ????-????? ????, ?? ???? ???OK.
  2. Windows ?? ???? ??????? ?? ??? ??????? ????????? ??????? ?? ??????? ????:
    • Windows 2000 ?? ??? ????? ??????? ?? ??????? ????:
      HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces
    • Windows Server 2003 ?? ??? ????? ??????? ?? ??????? ????:
      HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
  3. ????? ?????????????? ??,????? ????-????? ????, ?? ???? ???DWORD ???.
  4. ??????:TcpWindowSize???????? ???????? ???, ?? thne Enter ?????
  5. ????? ????,??????? ????????? ?????????????? ??..
  6. ?????? ????? ?? ???? ??? ???????? ????????? ????

    ???:. ????? ?? ???? ?? ??? ????? ?????? ?? 0-0x3FFFC000 Hexadecimal.
?? ??? ??????? ??? ??? ????? ???? ??? ?? ?? TcpWindowSize ??? ?? ?????? ???, ?? ??? discussed ??????? ????? ?? ???? ?????????? ??????? ???? ???

???:TcpWindowSize ?? globally ??? ??????? ?? ??? ????? ?? ???? ??? ???? ?? ??? ???????? ????? ????? ?? ???? ???

?? ??????? TCP ??????

?????? ??? TCP ?????? ??????? ?????? ??? ???? negotiating ?? ??? ????? ??? ?? ??? Windows, ??? TCP ?????? ??? ?? ?? ??? ????? ????? ????????, ??? ??????, ????? ACK.

????? ?????? ?? TCP ?????? ???:
  1. ???? ??? octet TCP ??????, ??? ?? ???? ?????? ?? ????? ?????? ?? ????? ???? ?? ??? ????? ???? ???? ???
  2. ???? ?? ?? ???? octet TCP ??????, ??? ?? ?? ?????? ??????, ?? ?????? ????? ?? ?????? octets ?? ?? ?????? ?? ????? ??? ?????
????? ???? ???????? TCP ?????? ??????, ?????, ???, ?? ????? ?????? ???
??????: 0
?????: 1
??????: ?????? ???? ?? ???
?????: ?? ????? ??? ?? ?? padding TCP ?? ????? ?????? ?? ??? ?????? ???

??????: 1
?????: 1
??????: ??? ????????
?????: ?? ????? ??? ?? ?? padding ?? ???????? ?? ?? ???? TCP ?????? ?? ???? ????? ?? ???? ?????

??????: 2
?????: 4
??????: ?????? ??? ????
Description: This indicates the maximum size for a TCP segment that can be sent across the network.

Kind: 3
Length: 3
Option: Window Scale Option
Description: Identifies the scaling factor to be used when using window sizes larger than 64k.

Kind: 8
Length: 10
Option: Time Stamp Option
Description: Used to help calculate the Round Trip Time (RTT) of packets transmitted.

Kind: 4
Length: 2
Option: TCP SACK permitted
Description: Informs other hosts that Selective Acks are permitted.

Kind: 5
Length: Varies
Option: TCP SACK Option
Description: Used by hosts to identify whether out-of-order packets were received.

Windows scaling

For more efficient use of high bandwidth networks, a larger TCP window size may be used. The TCP window size field controls the flow of data and is limited to 2 bytes, or a window size of 65,535 bytes.

Since the size field cannot be expanded, a scaling factor is used. TCP window scale is an option used to increase the maximum window size from 65,535 bytes to 1 Gigabyte.

The window scale option is used only during the TCP 3-way handshake. The window scale value represents the number of bits to left-shift the 16-bit window size field. The window scale value can be set from 0 (no shift) to 14.

To calculate the true window size, multiply the window size by 2^S where S is the scale value.
For Example:
If the window size is 65,535 bytes with a window scale factor of 3.
True window size = 65535*2^3
True window size = 524280
The following Network Monitor trace shows how the window scale option is used:
TCP: ....S., len:0, seq:725163-725163, ack:0, win:65535, src:1217 dst:139(NBT Session)
TCP: Source Port = 0x04C1
TCP: Destination Port = NETBIOS Session Service
TCP: Sequence Number = 725163 (0xB10AB)
TCP: Acknowledgement Number = 0 (0x0)
TCP: Data Offset = 44 (0x2C)
TCP: Reserved = 0 (0x0000)
+ TCP: Flags = 0x02 : ....S.
TCP: Window = 65535 (0xFFFF)
TCP: Checksum = 0x8565
TCP: Urgent Pointer = 0 (0x0)
TCP: Options
+ TCP: Maximum Segment Size Option
TCP: Option Nop = 1 (0x1)
TCP: Window Scale Option
TCP: Option Type = Window Scale
TCP: Option Length = 3 (0x3)
TCP: Window Scale = 3 (0x3)

TCP: Option Nop = 1 (0x1)
TCP: Option Nop = 1 (0x1)
+ TCP: Timestamps Option
TCP: Option Nop = 1 (0x1)
TCP: Option Nop = 1 (0x1)
+ TCP: SACK Permitted Option
It's important to note that the window size used in the actual 3-way handshake is NOT the window size that is scaled. This is per RFC 1323 section 2.2, "The Window field in a SYN (for example, a [SYN] or [SYN,ACK]) segment itself is never scaled."

This means that the first data packet sent after the 3-way handshake is the actual window size. If there is a scaling factor, the initial window size of 65,535 bytes is always used. The window size is then multiplied by the scaling factor identified in the 3-way handshake. The table below represents the scaling factor boundaries for various window sizes.

?? ?????? ?? ??????? ?????? ?????? ?? ??????? ????
Scale FactorScale ValueInitial WindowWindow Scaled
0165535 or less65535 or less
1265535131,070
2465535262,140
3865535524,280
416655351,048,560
532655352,097,120
664655354,194,240
7128655358,388,480
82566553516,776,960
95126553533,553,920
1010246553567,107,840
11204865535134,215,680
12409665535268,431,360
13819265535536,862,720
1416384655351,073,725,440

?????? ?? ???::

??? ????? ???? ??? ????????? ?? 269000000 (269 M) ?? ??? ??? ??? ???? ??? ?? ?????, 3 ?? ??? handshake ?? ????? ???????? ?????? ?? 13, 12 ?? ??? ???????? ?????? ???? ?? ?????? ???? ??????? ??? ????? ?? ???? ?? 268,431,360 ?????? (268 M)?

?? ?????? ??? ????????? ????? ?? ???? ??????????? ??????? ???? ?? ?? ????:
???? ????? ????? ??????? 13 ?? ??? 65,535 ?????
????? ?? ???? TRUE = 65535 * 2 ^ 13
????? ?? ???? TRUE = 536,862,720
????? ?? ???? ?? ??? ??? ????????? ??? ????? ??, ?? ???? ???? ??????? ??? ?? ???? ??, ?? Windows ?? ????? ?? ???? accommodates ????? ??? ?? ????? ???? ?? ?????? ???? ???

???????? ????? ?? ??????????? ?? ????????? ???? ?? ??? Tcp1323Opts ??? ????? ????????? ????? ??? ????? ?? ???? ??:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters
  1. ????? ????? ????? ?????????????? ????,?????, ?? ??? ???? ????regedit????????? ?????? ?? ??????? ?????
  2. ????????? ?????? ???, ????? ???????????? ????? ????,????? ????-????? ????, ?? ???? ???DWORD ???.
  3. ???????? ???????? ???,Tcp1323Opts??? ?????ENTER, ?? ???? ??? ???????????? ??,??????? ????.???:????? ?????? 0,1,2 ?? 3 ???? ??:
0 (RFC 1323 ?????? ?????)
1 (????? ????? ???? ????? ????)
2 (timestamps ???? ????? ????)
3 (????? ?????? ?????)
?? ????????? ????????? RFC 1323 timestamps ?? ????? ?????? ???????? ????????? ???? ??? Timestamps ?? ???????? ??? ?? ?????? ????? ????????, ????? ???? ????? ?? ??? manipulated ?? ???? ???? 0 ???????? ????? ???????? ???, ?? 1 ???????? timestamps ??? ???

Timestamps

????, TCP/IP ????? ????? ?? ????? (RTT) ????? ????? ??? ?? ???? ???? ?? ??? ???? ??? ??? ???? ?? ????? ?? ????? ??? ???? ????? (retransmit ?????) ????? ???? ??? ??, ?? ?? ?? acknowledgment ??????? ??? ?? ?? ?? ??? ??? ???? ??? ??? ?????? ?? ???, ??? ????? ?? ???? ?? ?????? ??????? ?? 64,240 ?????? (44 ????? ?????) ???? ??? ??, ???????? 44 ????? ??? ?? ???? ?? ?? ?? ????? ?? ??? ????? ????? ??? ?? ??? ?? ??????? ????? ???? ????? ?? ?????? ???? 65,535 ?????? ??, ?? ??? ?? sampling ?? ?? ????????? ????? ????????, ?? ???? ????? ?? ?????? ???? ?? 1 ???????? ?? ????? ???? ???, ?? RTT sampling ?? ???????? ???? ???

TCP ??????????? ?????? ?? ???? ??? ?? RTT ????, PAWS ???, ???? ???????? ???? ?? ??? ??? (???? ?? ACK) ?????? ????? ??????? deemed ?? ????? ?? ??? ??? ???? ?? ???? ?? on ???? ?? ???? ?? ????? ??, RTT ?? ???? ?? ?????? ??????? ???? ????? ?? ???? ?? ???? RTT retransmission ?????? ?? ???? ???? ?? ??? ????? ???? ???? ??? ????? RTT ?? retransmission timeouts ?? optimum ?????? ?? ??? ?????? ???

????? TCP ??? ??????? ?? TCP ???? ??? ????? ???? ???? ??, ?? ???? ?? ???????? ?? ?????? TCP ??? ??? handshake (SYN ?????) ?? ???? ???? ????? ???? ???? ?? ?? ???? ?? ????? TCP ?????? ?? ????? ?? ?? ???? ????

TCP Timestamps ?????? (TSopt):

?? ?????? ?? ??????? ?????? ?????? ?? ??????? ????
?????? = 8????? = 10TS ??? (Tsval)TS ?????????? ????? (Tsecr)
1 ????1 ????4 ??????4 ??????

??????????? ?????? ????? ???? ?? ???? ??? ?? ??????? ?????? ????? TCP ?????? ????? ?? ??????? ???? ?? ?????? ???? ????? ?? ?? ??? ???:
TCP: Timestamps ??????
?????? ?????? ?? TCP: = Timestamps
TCP: ?????? ????? 10 (0xA) =
TCP: ??????????? 2525186 (0x268802) =
TCP: ????? ??????????? 1823192 (0x1BD1D8) =

Wrapped ??????? ??????? (PAWS) ?? ??????? ???????

TCP ??????? ?????? ????? ?? ????? ?? 32 ?????, ?? ???? ?????? ?????? ?? ?????? ????? ???? ??? ???? ?????? ????????? ?? ?? ??? ???? ?? ??????????, ?? ??? ??? ????? traverses ??????? ?? ???? ??????? ?????? ?? ?????? ?? ??? ??????? ??? ??? ??? 1 Giga-???? ????? ????? (Gbps) ??????? ?? ???? ??? ??? ??, ??????? ?????? ??? 34 ????? ?? ??? ???? ??? ??? ????? ????? ??, ??? ???? ?????? ?? ??? ???? ????? ????? ????? ??????? ???? ????????? ??????? ?????? ?? ???? ??? confusion ?? ????, ?? ??? TCP ??????????? ????????? ??????? ?????? ?? ??? ??? ????? ???? ???? ??? ????? ?? ??????? ?? progressing ??? stamps ??? ???? ?????? ????? ???? ?????? ??? ??????? ?? ?? ?? ??? ?? ???

????? Acknowledgements (SACKs)

Windows ????? Acknowledgement ?? SACK ?? ??? ??? ????? ???????? ?????? ?? ??? ?????? introduces ??? SACK ??? TCP ????? ???? ?? ????? ???? ???? ??????? ?? ??? ????? ??? ?? ?????????? ??? SACK, ???? ?? ???? ??? ???????????? ??? ???? acknowledge ??????? ?? ?? ?? ?? ?????? ???? ?????? ?? ?????? ??????? ??????, ?? "?? ???? ??????" receive ?????? SACK ????? ??, ?? ??? ?????? receive ????? ?? ???? ?????? acknowledge ???? ?? ??? ACK ???? ?? ????? ???? ?? ??? ???? ???? ??, ????? ?? ?? ???? ??? ?? acknowledge ???? ????? ?? ??????? ??? ?? ???? ?? ???-??? ??? SACK TCP ????? ??? ?????? ?? ??? ??? ???? ????? ?? ?? ????? ???? ???

SACK ?? ?????? ?? TCP ?????? ?? ????? ???? ???

TCP Sack-Permitted ?????? ?? ????? ???? ?? SYN ????? ??? (??? TCP ??????? establishment) ????? ???? ??? ?? ?? ????? ACK. ???? ?? ???? ??? ?? ???

????? TCP ??????, TCP Sack ?????? ??? ???? ?? ?? ?? ???? ????? ???? ?? ??? acknowledgment ??? ???? ??? ??????? ?????? ?? ????? ?? ??????? ??? ?? ?? ??? ?? ???? ?? ??? ??? ?????? ???? ???? ?? ??? ?? ???? ?? ???? ?? ???? ?????? ?? ???? ???

4 ?????? ?? TCP Sack-Permitted ?????? ??, ?????? 5 ?? TCP Sack ?????? ??? ????? ??? ?????? ??? ????? ?? ?? TCP ?????? ???

TCP Sack ?? ?????? ??:

?? ?????? ?? ??????? ?????? ?????? ?? ??????? ????
?????? = 4????? = 2
1 ????1 ????

TCP SACK ??????:

?? ?????? ?? ??????? ?????? ?????? ?? ??????? ????
?????? = 5????? ?? =
1 ????1St ??? ?? ???? ?????? ???? ?? ??? 1st ??? ?? ???? ??????
...
Nth ?? ???? ?????? Nth ??? ?? ???? ?????? ???? ?? ??? ??????? ??

????? ?? SACK ????? (???????), ?? ??? ????? ?? ????? ?? ???????? ?? ???? ?? ??, ?? ?? ???? ??? ??????? ?????? ???? ?????? ???-?? ???? ??????? ???, ?? ???? ?? "holes" ???? ??? ??? ?????? ?? ??? ???? ?? ?? ???? ??? ??????? ??????????? ???? ??? ?? ???? retransmission ???? ???? ???????? ??? ?? retransmit ?? ?? ???? ???? SACK ?? SackOpts ????????? ???????? ?????? ????????? ???

????? acknowledgements ?? ????? ?? ????????? ???? ?? ??? ????? ????????? ????? ??? SackOpts ??? ??????? ???? ?? ???? ??:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
  1. ????? ????? ????? ?????????????? ????,?????, ?? ??? ???? ????regedit????????? ?????? ?? ??????? ?????
  2. ?????? ????? ?? ????????? ?????? ??? ??? ????? ?? ????? ????, ?? ???? ?????????? ????????? ?????????????? ??..
  3. ?????? ??? ???????? ????????? ????
???:: 0 ?? 1 ?????? ??? ????? ??, ??????? ??? 1 ??? ?? ???????? ?????????? ?? ???? ?? ????? ACK (SACK - RFC 2018) ?????? ????? ???? ??? ???

????? ??????? ?????? ????? illustrates ???? ????? ??????? ?????? 54857341 ?? ??? ???? ?? ???? ?? ??????? ?????? 54858789 54861685 ?? acknowledging ??? ??? ???? ?? 54857341 ?? 54858788 ???? ?? ????
TCP:.... A., len:0, seq:925104 - 925104, ack:54857341, ???: 32722, src:1242 dst:139
TCP: ????? ????? = 0x04DA
TCP: ?????? ????? ???? ???? ??? NETBIOS =
TCP: ??????? ?????? 925104 (0xE1DB0) =
TCP: Acknowledgement ???? 54857341 (0x3450E7D) =
TCP: ???? ????? = 44 (0x2C)
TCP: ??????? = 0 (0x0000)
+ TCP: ???? = 0x10:. A....
TCP: ????? 32722 (0x7FD2) =
TCP: checksum = 0x4A72
TCP: ?????? ???? = 0 (0x0)
TCP: ??????
TCP: ?????? Nop = 1 (0x1)
TCP: ?????? Nop = 1 (0x1)
+ TCP: Timestamps ??????
TCP: ?????? Nop = 1 (0x1)
TCP: ?????? Nop = 1 (0x1)
TCP: SACK ??????
?????? ?????? ?? TCP: = 0x05
TCP: ?????? ????? 10 (0xA) =
TCP: ????? ??? ?? ?????? 54858789 (0x3451425) =
??? ?? ???? ?????? TCP: 54861685 (0x3451F75) =

TCP retransmission ??????? ?? ??? retransmit

TCP Retransmission

??????? retransmission ??????? ?? ???????, ?? ??? ??? TCP ??????? ?? retransmission ????? ?? ???????? ???????? ??? ?? handed ???? ?? ??? ??????? ????????? (IP)? ??? ??? acknowledgment ??????? ??? ???? ??? ?? ??? ??? ???? ?? ??? ????? ?? ??????? ?????? ???? ??, ???? ?? ???? ??? retransmitted ??? ???

(RTO) retransmission ???????? ?? ???????? ?????? RFC 793 ??? ???? ?????? Smoothed ??? ????? ??? (SRTT) ?????? ?? ????? ??????? ?? ????????? ?? ??? ???? ?? ???? ????? ?? ??? ?? ??? ?? ??? ???????? retransmission ?? ?? ??? ?? ??? doubled ?? ??? ?? ?????????? ?? ????? ?? ??? ??, ?? TCP tunes ????? ?? ??????? ?? ??????? ????? ?? ????

??? Retransmit

TCP retransmits ???? ?? ??? ???????????? ?? ??? retransmission ????? ??????? ?????? ???? ?? ????? ???? ??????? ?? ?? ???? ?? ???? ??? ?????? ??? retransmit ?? ??? ??? ???? ???? ??? ?? ?????? ?? ?????? ???? ???? ??? ???????????? retransmits ??????? ???????? ?? ?? ??? ???? ??????? ?????? ?? ??? ???? ??????? ????, ?? ???? ??? ?? ???? ?? ?? ??? ???? ????? ?? ?? ?? ??? ????? ?? ????? ?? ?????? ?? ????? ???? ?? ???, ?????? ????? ?? ?? ACK, ?? ACK ?????? ??? ???? ?? ??? ??????? ?????? ???????? ??? ???????? ???????? TCP ??? ?? ?? ??? ?? ??? ??? ???? ?? ??? ?? ???? ?????? ?????? ACKs ?? ?? ??????? acknowledging ???? ??????? ?????? ?? ?? ??????? ???? ?? ??? ??????? ???? ??, ?? ?? ???? ?? ?? ????? ?? ?? ??? ??? ??? ?? ?? ?? ??? ?????? ??? ?????? ?? ????????, ?? ???? retransmission ????? ?? ??????? ?????? ???? ?? ??? ????????? ?? ??? ?? ?? ????? ??? ?? ????? ??????? ?? ???????????? ?? ??????????? ?? ??????? ?? ?? ????? ????? ????? ???? ????? ????

???????? ??? ??, Windows resends ??? ??? ??? ??? ????? ???? ?? ?? ??????? ??????, (?? ACK ?? 2 ?????????) ?? ??? ??? ACKs ?? ?? ??????? ?????? lags ??????? ??? ?? TcpMaxDupAcks ????????? ???????? ?? ??? controllable ???

???? ??? ??????? ???? ?? ??? ?????? ACKs ?? ?????? retransmits ?? ???????? ???? ?? ??? ????? ????????? ????? ??? TcpMaxDupAcks ??? ??????? ???? ?? ???? ??:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
  1. ????? ????? ????? ?????????????? ????,?????, ?? ??? ???? ????regedit????????? ?????? ?? ??????? ?????
  2. ?????? ????? ?? ????????? ?????? ??? ??? ????? ?? ????? ????, ?? ???? ?????????? ????????? ?????????????? ??..
  3. ?????? ??? ???????? ????????? ????
???:: ????? ?????? ?? 1-3 ??, ??????? ??? 2 ???

?? ???????? ?? ?????? ?? ???? ?? ???? ?? ?? ?? ??????? ?????? ?? ??? "retransmit ??????" ??? ??? transit ????? ???? ????? ???? ??? ?? ?? ???: ????? ?? ??? ?????? ?? ?? ???? ????????? ACKs ?? ?????? ????????? ???? ???

???

???? ID: 224829 - ????? ???????: 02 ?????? 2010 - ??????: 2.0
???? ???? ???? ??:
  • Microsoft Windows 2000 Server
  • Microsoft Windows 2000 Advanced Server
  • Microsoft Windows 2000 Professional Edition
  • Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
  • Microsoft Windows Server 2003, Standard Edition (32-bit x86)
  • Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)
??????: 
kbenv kbinfo kbnetwork kbmt KB224829 KbMthi
???? ?????? ????????
??????????: ?? ???? ?? ???? ??????? ?? ????? ?? Microsoft ????-?????? ?????????? ?????? ?????? ???? ??? ??. Microsoft ???? ??? ????-???????? ?? ????-???????? ????? ?????? ?? ???? ???????? ???? ?? ???? ????? ????? ??? ?? ??? ?????? ?? ???? ???? ???? ??? ????? ??. ???????, ????-???????? ???? ????? ???? ???? ???? ???. ?????, ????????, ?????-???? ?? ??????? ?? ???????? ?? ???? ???, ???? ?? ??? ?????? ???? ???? ??? ????? ??? ?? ???? ??. Microsoft ??????? ??? ???? ?? ?????? ?? ??????????, ????????? ?? ??? ?????? ?? ???? ????? ?? ???? ???????? ?? ??? ???? ????? ?? ??? ????????? ???? ??. Microsoft ????-?????? ?????????? ?? ????? ?????? ?? ?? ??? ??.
?????????? ?? ??????? ????????? ??????? ??:224829

??????????? ???

 

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