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Hardware Component Overview
Chassis
25
Figure 10: Midplane Domains
Chassis Versions
There are two versions of the chassis—version 1 and version 2. Version 2 provides all the
functions provided by version 1, but contains a new midplane that provides the following
features:
! Support for eight RF upstream ports from a SIM to its corresponding DOCSIS Module.
! Ethernet wiring between DOCSIS Modules and NIC Modules that eliminates the need for
external NIC Access Module cables.
! Ability to read the chassis version with the show chassis hardware detail command.
Midplane Slot Numbers
(front view)
123456 7910111213
DOCSIS Module
DOCSIS Module
DOCSIS Module
DOCSIS Module
DOCSIS Module
DOCSIS Module
DOCSIS Module
DOCSIS Module
NIC Module
NIC Module
Chassis Control Module
Chassis Control Module
Domain A
Domain B
Comm
Channel
Host
Controller
When Ethernet wiring within the new midplane is used:
! You must install a NIC Access Module opposite each
installed NIC Module for proper Ethernet signal
termination.
! You must not connect NIC Access Module cables to
the NIC Access Module.