
117357-A Rev. A
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Contents
About This Guide
Before You Begin .............................................................................................................xiii
Conventions .....................................................................................................................xiv
Acronyms ......................................................................................................................... xv
Ordering Bay Networks Publications ...............................................................................xvi
Bay Networks Customer Service .....................................................................................xvi
How to Get Help .............................................................................................................xvii
For More Information ......................................................................................................xvii
Chapter 1
Logical Link Control Overview
Using LLC2 with SNA and NetBIOS ...............................................................................1-2
Supported Connections ..................................................................................................1-2
Frame Relay Support ......................................................................................................1-3
Boundary Network Node (RFC 1490) ......................................................................1-3
Boundary Access Node ...........................................................................................1-4
LLC 8802/802.2 Standards .............................................................................................1-6
LLC Service Classes ......................................................................................................1-6
LLC1 (Connectionless Service) ...............................................................................1-7
LLC2 (Connection-Oriented Service) .......................................................................1-7
LLC Operation Types ......................................................................................................1-8
Type 1 Operations ....................................................................................................1-8
Type 2 Operations ....................................................................................................1-8
LLC Functionality ............................................................................................................1-9
LLC Protocol Data Unit Formats ...................................................................................1-10
Destination SAP (DSAP) ........................................................................................1-10
Source SAP (SSAP) ...............................................................................................1-11
SAP Addressing Scheme .......................................................................................1-12
Control Field ...........................................................................................................1-13
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