利用windows内置共享后客户机部分网站不能上的问题

i-winnerUID: 183200

利用windows内置共享后，客户机可以使用QQ，Outlook等等，但部分网站不能上，需要修改客户机的MTU值。

打开注册表编辑器，找到

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interf

aces\ID for Adapter

这里ID for Adapter代表你的用于联网的网卡，我的是

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interf

aces\{F1EF0476-AB51-42E8-8CB9-17F93BE1BEB4}

选中，会有很多项，不用管，选择编辑-新建-双字节值，数值名称为MTU，数值数据选

择十进制1400左右。基本上就没有什么问题了！

下面的文章是详细内容

Client Problem MTU



browser problems with client, some websites reachable, some not



ping http://www.spiegel.de/ reachable

ping http://www.microsoft.com/ not reachable



Das MTU/PMTU-Problem wird durch non PMTU compliant router (Path Maximum

Transmission Unit discovery described in RFC 1191 for TCP connections) auf

dem internet path bis zum destination host verursacht (s.a. PMTU

Compliance).



Solution MTU:



http://support.microsoft.com/support/kb/articles/q259/7/83.asp

Q259783 - PPPoE with ICS Requires MTU Setting Below 1492 on the ICS Clients



PPPoE requires lowering the Maximum Transmission Unit (MTU) setting on all

client computers to a value no larger than 1,492. (The default is 1,500.) In

some cases, a value less than 1,492 may be necessary.



In order to determine the proper MTU size, perform the following steps:



1. Determine the default gateway of the ICS server using IPCONFIG.



192.168.0.1



2. From a command prompt on a client, type PING -f -l <MTU size> <IP address

of default gateway from first step>. Start with an MTU size of 1,454.

-f Flag for set "Don't Fragment"

-l send buffer length



ping -f -l 1500 192.168.0.1 > 100% loss (must be fragmented)

ping -f -l 1492 192.168.0.1 > 100 % loss (must be fragmented)

ping -f -l 1488 192.168.0.1 > 100 % loss (must be fragmented)

ping -f -l 1454 192.168.0.1 > 0 % loss

ping -f -l 1454 www.spiegel.de > 25 % loss (reachable with browser)

ping -f -l 1450 www.spiegel.de > 0 % loss

ping -f -l 1450 www.microsoft.com > 100 % loss Zeitüberschreitung

(reachable with browser)



3. If this fails with an error message indicating that it must be

fragmented, decrease the MTU size and try again. Repeat this until the ping

command succeeds.



MTU = 1450



4. about setting the MTU value in Windows: Q120642 TCP/IP and NBT

Configuration Parameters for Windows NT















Setting MTU for Windows XP, Windows 2000, Windows NT



http://support.microsoft.com/support/kb/articles/Q120/6/42.ASP (Windows XP,

Windows 2000, Windows NT)



The TCP/IP protocol suite implementation for Windows NT 3.5x and 4.0 reads

all of its configuration data from the registry. This information is written

to the registry by the Network tool in Control Panel as part of the Setup

process. Some of this information is also supplied by the Dynamic Host

Configuration Protocol (DHCP) client service if it is enabled.



To change these parameters, use the following procedure.





1.. Start Registry Editor (Regedt32.exe).

2.. Backup registry.

3.. From the HKEY_LOCAL_MACHINE subtree, go to the following key:

4.. \SYSTEM\CurrentControlSet\Services

5.. Add a value to the key as described in the appropriate entry below by

clicking Add Value on the Edit menu, typing the value, and then using the

Data Type check box to set the value type.

6.. Click OK.

7.. Quit Registry Editor.

8.. Reboot the computer to make the change take effect.



All of the TCP/IP parameters are registry values that are located under one

of two different subkeys of

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services



Tcpip\Parameters

Adapter Name\Parameters\Tcpip



where Adapter Name refers to the subkey for a network adapter that TCP/IP is

bound to, such as Lance01. Values under the latter key(s) are specific to

each adapter. Parameters for which there may be both a DHCP and statically

configured value may or may not exist depending on whether the

system/adapter is DHCP configured and/or static override values have been

specified. A reboot of the system is required for a change in any of these

parameters to take effect.



The Windows NT TCP/IP implementation is largely self tuning. Adjusting

registry parameters without careful study may adversely affect system

performance. The parameter MTU normally does not exist in the registry. They

may be created to modify the default behavior of the TCP/IP protocol driver.



MTU



Key: Adapter Name\Parameters\Tcpip



NOTE: In Windows 2000 and later this value is under the following key:

Key: Tcpip\Parameters\Interfaces\ID for Adapter

Value Type: REG_DWORD Number

Valid Range: 68 - the MTU of the underlying network

Default: 0xFFFFFFFF

Description: This parameter overrides the default Maximum Transmission

Unit (MTU) for a network interface. The MTU is the maximum packet size in

bytes that the transport will transmit over the underlying network. The size

includes the transport header. Note that an IP datagram may span multiple

packets. Values larger than the default for the underlying network will

result in the transport using the network default MTU. Values smaller than

68 will result in the tranport using an MTU of 68.













Setting MTU for Windows 95, Windows 98, Windows ME



http://support.microsoft.com/sup ... =DE&SD=SO&F

R=0

Q158474: Windows TCP/IP Registry Entries

(Windows 95, Windows 98, Windows ME)

www.microsoft.com/IntlKB/Germany ... &SD=SO&FR=0

D35685 - Windows-TCP/IP-Registrierungseintr?ge

(Windows 95, Windows 98)



Backup your registry before editing keys or values.



The entries in this section must be added to the following registry key,

where n represents the particular TCP/IP-to-network adapter binding.

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Class\netTrans\000n



MaxMTU = 16-bit integer

Data Type: String



This specifies the maximum size datagram IP that can pass to a media driver.

SNAP and source routing headers (if used on the media) are not included in

this value. For example, on an Ethernet network, MaxMTU will default to

1500. The actual value used will be the minimum of the value specified with

this parameter and the size reported by the media driver. The default is the

size reported by the media driver.

seaxpUID: 145392

在太傻上看到过这个帖子。

建议以后使用路由器，就不用这么麻烦了。