Server-Detection via DHCP for SwyxIt! on Vista / XP SP3 (kb3874)

The information in this article applies to:

  • Microsoft Windows Vista
  • Microsoft Windows XP Professional
  • Microsoft Windows XP Home Edition
  • SwyxIt! all versions

[ Summary | Information ]


For SwyxIt! clients running on Windows Vista resp. Windows XP SP3 the server name distribution via DHCP option 42 "Vendor Speficic Information" is not supported.


SwyxServer Detection via DHCP

SwyxWare supports two mechanisms of distributing the SwyxServer name to SwyxIt! clients (see SwyxWare documentation):

  • Vendor specific DCHP option 43 (magic string IPPBXSRV as hex digits, followed by 4 bytes server IP address and 4 bytes fallback server IP address)
  • Configure DNS entries "" and "", resolving to the IP addresses of your SwyxServer and fallback server (replace with your own domain name).

Windows Vista as well as Windows XP SP3 does no longer support vendor specific DHCP option 43. So please use the DNS method for distributing the SwyxServer addresses when you are using Windows Vista or Windows XP SP3.


Comment on this article

If we have any follow-up questions, where can we contact you?

E-Mail Address (optional)


This feedback form can't be used for support requests. Those requests must be directed to your Swyx reseller or distributor.