Avaya Configuring ATM Half-Bridge Services Uživatelský manuál stáhnout pdf (Strana 19)

300017-A Rev. 00

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Chapter 1

ATM Half-Bridge Overview

This chapter provides an overview of basic ATM Half-Bridge concepts and the

specific ways Bay Networks implements these concepts on BLN

and BCN

routers.

This chapter assumes that you understand ATM concepts and terminology. For a

brief overview of ATM, see Appendix B. For detailed information about ATM,

refer to Configuring ATM Services.

This chapter contains information about the following topics:

What Is ATM Half Bridge?

ATM Half Bridge (AHB) is a protocol operating on BLN and BCN routers that

connects remote hosts (PCs and workstations) attached via digital subscriber line

(DSL) devices (modems) to an IP routed network. These modems send and

receive IP packets over ATM PVCs using RFC 1483 SNAP/LLC encapsulation.

AHB converts RFC 1483 bridge frames containing IP packets to unencapsulated

routed frames and performs the reverse function for packets returning from the

opposite direction.

Topic Page

What Is ATM Half Bridge? 1-1

How the AHB Router Works 1-4

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Avaya Configuring ATM Half-Bridge Services Uživatelský manuál Strana 19