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Cisco MGX 8230 Edge Concentrator Installation and Configuration
Release 1.1.31, Part Number 78-11215-03 Rev. B0, May 2001
Chapter1 Introducing the MGX 8230
Summary of MGX 8230 Cards and Modules
Command line interface (CLI ): th e CLI is used for low-level control of ha rdware functionality and
connection control.
The following ports are used to com municate with the MGX 8230:
The Control port (SLIP protocol only) on the PXM1-UI back card.
The LAN (Ethernet) port on the PX M 1- U I ba ck card.
The in-band ATM connection (feeder application only).
All of these ports support access by th e C LI v ia Telnet, TFTP, and SNMP.
Note See the User Interface Access Ports, page 5-2 for additional i nformation on the po rts used to manage
and configure the MGX 8230.
Summary of MGX 8230 Cards and Modules
This section contains a summary of the service cards and modules supported by the MGX 8230.
For more detailed descriptio ns an d ill us t ra ti on s of cards, modules and the serv ice s they provide, please
refer to Chapter 2, Module and Service Descriptions.

Introduction to Core Card Sets and Service Modules

The MGX 8230 supports core cards and service modules. The Proce ss or S witc hi ng Modu le (PX M1) and
optional Service Resource M o du le ( SRM ) are core cards.
In addition, the PXM1 is part of a card set consisting of a front card, a back card, and a daughte r card :
The front card contains the proc es sin g in te lligence.
The daughter card contains the firmware th at distinguishes the interface (OC- 3, T3, E3, and so on).
The back card is a simple card th at pr ovid es t he el ect ri cal i nt er fac e for o n e o r mo r e li n es o f a
particular type.
Service modules are not combi ne d in th is m an n er an d ar e n ever pa rt o f a ca rd se t. Instead, service
modules provide the interface for transport te ch no lo g ie s suc h as Frame Relay and ATM.
The MGX 8230 enclosure contains up to 8 service modules (I/O cards). The optional Service
Redundancy Modules (SRMs) provide redundancy.
Note Although technically distinct, he terms card and module are often used interchangeably in the field.

Processor Switching Mo dule (PXM1)

Processor Switching Module (PXM1)
This front card controls the 8230 and supports external interfaces for user-access and trunking or
UNI ports. The back cards consist of a user interface card and a broadband network module.