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Configuring DLSw Services

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304233-A Rev. 00

DLSw Networking Overview

DLSw provides a standards-based mechanism for reliably transporting

connection-oriented Systems Network Architecture (SNA) and NetBIOS data

across a network. Originally defined in RFC 1434, and currently in RFC 1795

with additional enhancements defined in DLSw Version 2 and RFC 2166, DLSw

resolves the issues associated with transporting SNA and NetBIOS information

across a multiprotocol backbone.

Specifically, DLSw:

• Prevents sessions from timing out due to slow network response time

• Automatically reroutes traffic around failed links

• Improves response time by reducing network overhead

• Enables multiple locations to interconnect without requiring a network

manager to reconfigure existing bridges

Additionally, the Bay Networks DLSw implementation provides several benefits,

including:

• Symmetric multiprocessor architecture, providing a highly scalable and

reliable implementation

• Advanced flow control, ensuring that the router-based network delivers

information as reliably as existing SNA networks

• Integrated SDLC-to-LLC2 conversion, enabling you to reduce the cost of

front-end processor (FEP) ports (for example, 3745), maintenance and

software

• RFC 1490 (LLC2 over Frame Relay) support, enabling a Bay Networks router

to communicate across a Frame Relay network directly to a front-end

processor or other device that supports this protocol

• DLSw prioritization, allowing preferred DLSw traffic to receive higher

priority than other traffic

The Bay Networks DLSw implementation is fully interoperable with RFC 1434,

RFC 1795, and RFC 2166 DLSw implementations.

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