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1. Windows 2003 has this nasty problem: when sending a custom datagram over a raw socket the IP Identification field gets overwritten by the OS. The socket is set up correctly and the IPHDRINCL option is set. Windows 2000 works as expected.
Has anyone encountered this and is there any workaround? It's crucial for me to be able to send the datagram just as I have constructed it. MSDN says that the OS may put its own value for the Identification field if I leave it as zero, but this is not the case. Regards, todor.
2. I would like to know where i can get articles on how to make Asynchronous sockets using WSAAsyncSelect and aslo about Overlapped I/O. 3. Hello Do you know any DHCP issue about NIC driver on Win98?
Should I enable TCP Offloading? UDP Checksum Offload? (IPv4/IPv6) Something else? Firefox Web Browser Tweaks Windows 2003 TCP/IP parameters Windows 7, Vista, 2008 Tweaks Windows Vista tcpip.sys connection limit patch for Event ID 4226 Gaming Tweaks LAN Tweaks for Windows 7, 8, 10 Windows 8. When i see the RTP packets with Wireshark, i see that every UDP packet originating from the Windows 7 machine has UDP checksum error, and Wireshark suggests that it might be caused of 'UDP checksum offload'.
I've heard that Win98 wireless NIC driver will not broad DHCP Discover repeatedly if it cannot get IP at the first time. Should Win98 NIC driver broadcast DHCP discover everytime connection is built? Thanks a lot. I write a function to get the dhcp state of the network adapter,which used the GetAdaptersinfo in iphlpapi.but it has always wrong with the dhcpenabled properties in IPADAPTERINFO in windows me.
And it always run well in windows 98,windows 2000,and windows XP.How about windows me? If the iphlpapi is not supported well in windows me? And please some one who can tell you some methods to get the right dhcp state of the network adapter in windows me thans a lot.
Problem Intermittent communications interruptions ending with packet loss can cause processes to hang or fail. While intended to increase performance across the network, TCP Chimney, TCPIP Offload Engine, and TCP Segmentation Offload often cause more issues then they solve. It is always recommended to disable these technologies on the eDP/Clearwell server. Known Issues with Offload Engines: Limitations of hardware — because connections are buffered and processed on the TOE chip, resource limitations happen more often then they would if processed by the ample CPU and memory resources that are available to the operating system.
This limitation of resources on the TOE chip can cause communication issues. Complexity — issues such as memory used by open connections are not available with TOE. TOE also requires very large changes to a networking stack in order to be supported properly, and even when that is done, features like Quality of Service and packet filtering typically do not work. Proprietary — TOE is implemented differently by each hardware vendor.
This means more code must be rewritten to deal with the various TOE implementations, at a cost of the aforementioned complexity and, possibly, security. Furthermore, TOE firmware cannot be easily modified since it is closed-source. Performance — Each TOE NIC has a limited lifetime of usefulness, because system hardware rapidly catches up to TOE performance levels, and eventually exceeds TOE performance levels. TOE does not increase bandwidth on the network.
In simple terms, TOE removes the responsibility of the protocol stack from the Server’s CPU allowing the server CPU to process information faster. As hardware performance increases, processes can complete their task prior to TOEs acknowledgment of the receipt of transmission; thus causing communication issues. Note: Microsoft has identified an issue running the netsh command to set global TCP parameters on Windows Server 2008 and Vista machines. Some global parameters, such as TCPTimedWaitDelay, can be changed from their default or manually set values to 0xffffffff. Before running the above command, Veritas recommends reviewing Microsoft KB Article 967224. Upon completion of the above command's execution, Veritas also recommends reviewing the TCP Parameters noted in the KB Article and applying the hotfix from the article if needed. Disable TOE and Receive Side Scaling.