User`s guide

Operation

3-2

Figure 3-1. Packet Flow for the 9H423-26

FENIB

The Fast Ethernet Network Interface Block (FENIB) converts Fast Ethernet data

packets received through front-panel ports into a common canonical format that

allows the SmartSwitch ASIC Engine to determine the proper destination port.

The FENIB also converts data packets from the common canonical format back to

Fast Ethernet data packets for transmission out front panel ports.

i960

Processor

Smart

Switch

ASIC

FENIB

INB

NIB

SMB 1

SMB 10

DC/DC

Converter

Diagnostic

Controller

FENIB