DLSw

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DLSw

(Data Link SWitching) An IBM method for integrating and forwarding SNA and LAN traffic over wide area networks (WANs) by encapsulating the data in TCP/IP packets. DLSw supports the SDLC (SNA) and LLC2 (Token Ring) data link protocols and is generally employed in routers. Multiprotocol over frame relay (MPOFR) is a later technology designed to move SNA and LAN traffic over frame relay. See MPOFR.
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Data Link Switching is an industry-standard technique for tunneling SNA and NETBIOS traffic through TCP/IP networks.
With Desktop Data Link Switching, we see much faster response times without giving up any of our SNA functionality.
The NBRO 327 offers support for TCP/IP, IPX, XNS, AppleTalk, DECnet, VINES and OSI, as well as support for Data Link Switching (DLSw) and SNA over Frame Relay (RFC 1490).
0 also incorporates GUI support for SNA Express, including both Data Link Switching (DLSw) and SDLC to LLC2 conversion, Frame Relay, IPX/SPX KeepAlive Proxy, and Flash RAM File System parameters.
LLSw is a RFC1490-compliant level 2 frame switching technique which provides the benefits of Data Link Switching (DLSw)-SDLC-to-LLC2 conversion, LLC2 WAN transport, non-disruptive alternate routing, and local serial SDLC and LAN LLC2 termination -- but without DLSw's bandwidth robbing overhead, lack of determinism, and operational complexity.
The popularity of Data Link Switching is evidence that it meets an important customer need," said Louise Herndon Wells, director of IBM Internetworking at Internetwork Technology Institute and chair of the Data Link Switching Related Interest Group.