Zhone IMACS 8000, User Manual

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5-22 Reference Guide
Model No.
Running Head
Reinitializing the System System Configuration and Operation
5.6 Reinitializing the System
The system stores information about its currently installed cards, the card configuration option
settings, WAN connections, passwords, and other data in nonvolatile memory (NVRAM) on
the CPU card. These cards are labeled CPU or CPU 7 on its faceplate ejector. Your telnet
connection to the system is through the Ethernet O&M port on the active CPU card. Your
VT100 connection to system is through the TERM port of the IF card.
When you remove and replace most card types, the NVRAM remembers the previous card
settings. If the same kind of new card is inserted in the slot, you do not need to reprogram the
settings. However, if you replace a card with a different type of card, the system lets you delete
the previous card type, so that you can program new parameter settings for the new card type
(see the Accept function described in this chapter).
Removing the entire Interface card for CPU 7 based systems is no longer required. The
primary function of the Interface card is to provide T1/E1 connectivity to the system's WAN
backplane. User access TERM port, external clocking, modem, ACO, and configurable
COMP port interfaces reside on a plug-in sub card housed in the main Interface card. This
plug-in sub card is accessed from the Interface card faceplate and is field replaceable.
Changing the plug-in sub card on the main Interface card does not impact live system traffic
nor does it require re-registration or zipping of the system.
When you remove and replace a CPU card with an identical CPU card with the same firmware
version, the system accesses the active CPU card's NVRAM and writes the configuration
parameters (including your current passwords) to the new CPU card. Your CPU card is labeled
CPU-7 on its faceplate ejector.
Note: You must always use a CPU-7 XCON card in your system. CPU cards with any other
designations marked on their ejectors will not work.