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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
Chapter 1 Introducing the MGX 8230
Summary of MGX 8230 Cards and Modules
• Command line interface (CLI): the CLI is used for low-level control of hardware functionality and
connection control.
The following ports are used to communicate with the MGX 8230:
• The Control port (SLIP protocol only) on the PXM1-UI back card.
• The LAN (Ethernet) port on the PXM1-UI back card.
• The in-band ATM connection (feeder application only).
All of these ports support access by the CLI via Telnet, TFTP, and SNMP.
Note See the User Interface Access Ports, page 5-2 for additional information on the ports 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 descriptions and illustrations of cards, modules and the services 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 Processor Switching Module (PXM1) and
optional Service Resource Module (SRM) are core cards.
In addition, the PXM1 is part of a card set consisting of a front card, a back card, and a daughter card:
• The front card contains the processing intelligence.
• The daughter card contains the firmware that distinguishes the interface (OC-3, T3, E3, and so on).
• The back card is a simple card that provides the electrical interface for one or more lines of a
particular type.
Service modules are not combined in this manner and are never part of a card set. Instead, service
modules provide the interface for transport technologies such 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 Module (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.