Cabletron Systems 9H533-24 사용자 설명서

Technical Overview

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The DC/DC converter converts the 48 VDC on the system power bus to the 
necessary operating voltages for its host network services module. The diagnostic 
controller monitors and controls the operation of the DC/DC converter.

Each module attaches to both INB A and INB B and has two INB ASICs. The INB 
ASICs use 64-byte Ethernet frames for transmission onto the INBs at 66 MHz. 

The 9X5XX modules are fully compatible with the the Þrst generation 9X4XX 
modules. The Þrst generation modules communicate only on INB B using a 
56-byte canonical frame format, at 40 MHz. If the newer module detects a Þrst 
generation module on the backplane, it automatically changes from the fast 
66 MHz Ethernet frames, to the Þrst generation compatible 40 MHz canonical 
frame on INB B only. INB A is used only by the 9X5XX modules and remains at 
the higher speed.

The i960 core provides modules host services, the SNMP protocol stacks, to 
support industry standard MIBs, as well as Cabletron enterprise extension MIBs 
for each media type. Management services, such as telnet, WebView and network 
address to MAC address mapping, are also provided by the i960 core.