DHCP Server Callout DLL for MAC Address based filtering - MAC Address List File Format
Looking at the problem in configuring Mac Address List File while configuring callout DLL for Mac Address based filtering, here are some detailed tips which will help you in verifying your configuration with one below...
· File should contain action followed by MAC address list as show in below format. There is stringent check on the format and hence it needs to be strictly followed including braces etc.
MAC_ACTION = {ALLOW / DENY}
000a0c0d1254
000d0c4a6723
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· First line in the file should specify the action. Action can be either ALLOW or DENY. Please note the braces around action.
o When action is specified as ALLOW, all requests from MAC address present in this list will be served by dhcp servers. All requests originating from MAC address not present in this list will be ignored.
o When action is specified as DENY, all request from MAC address present in the list will be ignored by dhcp servers. All requests from MAC addresses not present in this list will be severed by dhcp server.
o Only one action out of ALLOW or DENY can be specified in MAC Address List File
· MAC address should be specified in format XXXXXXXXXXXX (where X can be hex digit 0 - F).There should not any delimiter such as -, : in MAC address. Each MAC address should be specified in separate line.
· If there is any error in MAC Address List File, it will be logged into CalloutErrorLogFile or default error log file. Following is expected behavior of dll in cases of errors
o If the action is not specified correctly, then dhcp server will function as if there is no callout dll i.e. none of the requests will be ignored. Error for the same will be logged in error log file.
o If one or more MAC addresses are not specified correctly, then in this case those MAC address entries will be ignored. Error for the same will be logged in error log file.
Thanks
Govind [MSFT]
