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DLSw provides means of transporting IBM SNA and NetBIOS traffic over an IP network
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Alternative to source-route bridging (SRB), which allows to transport SNA and NetBIOS traffic in Token Ring environment
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IBM solution in 1992 (RFC 1434, 1795)
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The principal difference between SRB and DLSw is in support of local termination
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DLSw node or router terminates data-link control (DLC)
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In SRB, data-link control is handled on an end-to-end basis
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Switch-to-Switch Protocol (SSP) is used between DLSw nodes (routers) to establish connection, forward data and handle flow control
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