Data-Link Switching transports
SNA and
NetBIOS traffic over an
IP network. It's
proprietary to
IBM and was introduced in 1992.
Based on the local termination support, DLSw is more efficient in a WAN environment than SRB (source-route bridging). DLSw has IEEE 802.2-compliant LAN support, SDLC, etc.
RFC 1795.