Compaq Windows Sockets Direct San Service Provider; Overview; Supplied Components For San Adapters; Tcp/Ip Functions - Compaq ServerNet ServerNet II Installation Manual

Overview

Microsoft Windows Sockets Direct (WSD) is a Data Center Server application that allows
existing Windows Sockets applications to take advantage of System Area Networks (SANs)
without the existing Windows Sockets application having to make any changes. It does this
using a SAN Service Provider. WSD routes data over a SAN via the SAN Service Provider (if
one exists), otherwise, WSD routes data over TCP/IP. Compaq is providing a SAN Service
Provider that will work with Microsoft's WSD through the use of its SAN interconnect,
ServerNet II.

Supplied Components for SAN Adapters

The SAN Service Provider uses the following software components to provide support for NDIS
and for WSD:
An NDIS miniport driver provides support for NDIS so it can communicate with
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Windows Sockets applications using a standard TCP/IP protocol driver. This NDIS
miniport driver supports standard media types such as Ethernet or ATM.
The SAN Service Provider DLL (SNetSanP.DLL) and its associated proxy driver provide
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support for WSD. These WSD components export the native transport semantics of an
interconnect for the SAN to Windows Sockets applications. These semantics can include,
for example, address family and message orientation.

TCP/IP Functions

As with any Adapter exposed through NDIS, the TCP/IP protocol driver assigns one or more IP
address to each SAN Adapter. The Windows Sockets switch and SAN service providers
determine these assignments. The switch uses this IP address information to determine which
SAN service provider to use for a given socket connection. SAN service providers use this IP
address information to translate IP addresses into native SAN addresses.
Compaq Windows Sockets Direct SAN
Appendix
Service Provider
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