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Error logs about DHCP

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The following provides detailed instructions on troubleshooting and resolving various issues related to DHCP within the context of using CCBootCloud

  1. "DHCP socket error in getsockname: 10055 reason: 0x2747 an operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full."
    With a large number of clients (100 or more) on one server, can see the following in the logs of critical errors as above.
    This error occurs because of the large number of concurrent connections (by default, win server 2008 is set to 5000). Due to this error, your clients will not receive IP addresses from DHCP and any PC can randomly lose connection from CCBoot and reboot.
    To fix this, you need to add more slots, this can be done using the registry editor.
    1. Start Registry Editor.
    2. Locate the following subkey in the registry, and then click Parameters:   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
    3. On the Edit menu, click New, and then add the following registry entry:
     Value Name: MaxUserPort
    Value Type: DWORD
    Value data: 65534
    Valid Range: 5000-65534 (decimal)
    Default: 0x1388 (5000 decimal)
    4. Close the registry editor and restart the CCBoot server.
    5. Now, clients will not such issue again