Microsoft KB Archive/195275

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BUG: Guaranteed Service Type Not Set Correctly in RESV Message

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Q195275

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The information in this article applies to:


 * Microsoft Win32 Software Development Kit (SDK), on platform(s):
 * Microsoft Windows 98

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SYMPTOMS
A Generic Quality of Service (GQoS) application that specifies Guaranteed Service in the flowspec structure results in the QOS service provider on the receiving side to emit a malformed RESV RSVP message on the wire. In particular the RSPEC portion of the flowspec object (please see RFC 2205, section 1.2) will be incorrect. In addition to the RSPEC being erroneous, some RSVP-enabled routers might have difficulty handling this erroneous data.

RESOLUTION
To work around this problem, do not specify Guaranteed Service (that is, SERVICETYPE_GUARANTEED) in the ServiceType member of the flowspec structure. To obtain better than Best-effort service, you should specify Controlled Load (that is, SERVICETYPE_CONTROLLEDLOAD) in the ServiceType member of the flowspec structure.

STATUS
Microsoft has confirmed this to be a problem in the Microsoft products listed at the beginning of this article.