Cisco Systems MGX 8230 manual PXM1 Features, PXM1 Illustration and LED Description

Chapter 2 Module and Service Descriptions

Processor Switching Module

PXM1 Features

The PXM1 (Figure 2-1) is a combination ATM switching fabric, data processing, and ATM interface card. This module combines a 1.2 Gbps shared-memory switching fabric with integrated trunking at speeds up to OC-12. The switching fabric provides 1.2 Gbps of non-blocking switching capacity, while the processor provides the control plane that delivers IP+ATM networking software, diagnostics, and performance monitoring.

The PXM provides integrated switching, processing, and broadband interfaces to provide the following high-performance switching and trunking features:

•1.2-Gbps non-blocking switching

•Integrated T3/E3, OC-3c/STM-1, OC-12c/STM-16

•ATM trunking

•Linear Automatic Protection Switching for the SONET interfaces. Note that APS is available for only the “B” models of the OC-3 and OC-12 uplink cards.

•Hot card insertion/removal

•1:1 hot standby redundancy

•User-selectable primary and secondary clock sources with graceful switchover

•Internal Stratum-4 or optional Stratum-3, external BITS, or inband clock sources

•Inband management or out-of-band via EIA/TIA-232 or 10BaseT control ports

•Narrowband service modules

•Broadband trunking support

•DSO to OC-12c/STM-4 interfaces supported

PXM1 Illustration and LED Description

PXM1 provides connectors for external audio and visual alarms. The interface can either be always open or always closed. Major and minor alarms are controlled separately. An alarm cutoff button is accessible from the front. A history LED is set when the alarm cutoff button is pressed. The history LED can be cleared by pressing the history clear button on the faceplate.

The PXM1 provides the following indicators:

•System Status Active/Standby/Fail/standby update (green/yellow/red/flashing yellow)

•Critical alarm (blue)

•Major alarm (red)

•Minor alarm (yellow)

•DC OK A (green = OK, red = not OK)

•DC OK B (green = OK, red = not OK)

•ACO (green)

•History (green)

•Port activity (active and clear = green, remote alarm = yellow, local alarm = red)

•LAN activity (flashing green)

	Cisco MGX 8230 Edge Concentrator Installation and Configuration
2-2	Release 1.1.31, Part Number 78-11215-03 Rev. B0, May 2001