Avaya a500 사용자 가이드

Cajun A500 ATM Switch Overview

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Cajun A500 ATM Switch User Guide

When the mini-bridge receives a multi-cast frame from the local ethernet port, it is 

dropped. When the mini-bridge receives a broadcast frame from the local ethernet port, 

it examines the frame to determine whether it is an IP ARP. If it is an IP ARP, the 

Proxy-ARP Hander (PAH) function is invoked. The PAH looks in the MIPM to see if the 

specified IP address is one of the A500s. If it is, the appropriate ARP response is returned 

to the local ethernet port.

SWP Operating System API

The architecture of the OS API and its relationship with the underlying operating system 

and device drivers are illustrated in Figure 1-5.

Figure 1-5: OS Adaptation Layer and Underlying Components

Note:  The implementation of the adaptation layer attempts to map directly to the 

underlying operating system calls as much as possible so as to minimize the 

overhead. 

The OS APIs are classified into the following categories:

U User data structures

U Process management call interface, inter-process communication call interface, 

buffer management call interface, timer management call interface, I/O 

management call interface, and other misc call interface

O p e ra tin g S ystem  A daptation Layer

p S O S +

p R O B E +

D e vice     D rive r

Tim e r  M a n a ge r

B u ffe r  M a n age r 

H igh  L e ve l I/O  In te rfa ce

O th e r  M isc

F unctions

G e n e ric  O p e ra ting S yste m  In te rfa ce