Processor Switching Module; Pxm Front Card - Cisco MGX 8850 Installation And Configuration Manual

Processor Switching Module

Processor Switching Module
This section describes any unique requirements for installing the Processor Switching Module
(PXM) card set and briefly describes the features of each card in the PXM card set. The PXM card
set consists of the PXM front card, the PXM User Interface back card (PXM-UI), and the various
uplink back cards that serve as either a trunk or a UNI. Each description includes a faceplate
description and a list of applicable cables. For instructions on how to configure the PXM
functionality for switch-level and network control, see Chapter 5, "Configuring the MGX 8850
Switch." For lists of the physical details of PXM cards, standards compliances, and other details, see
Appendix A, "System Specifications."
Note
"Installing the Cards."
Caution
drive. Do not drop or bump the PXM.
Caution
uplink card type. Serious damage may result if the power is on and these cards are mismatched.
Note
observe incorrect switch operation, check for bent or damaged pins on the backplane and card.

PXM Front Card

Primarily, the PXM controls the switch and provides 1.2 Gbps of non-blocking, shared memory
switching. In addition, the PXM features are:
•
A disk drive that holds software, statistics, and firmware for all the cards (used for upgrades).
•
Environmental monitoring (cabinet temperature, fan speed, and power supply voltages).
•
Hot swappable, 1:1 redundancy.
•
Automatic Protection Switching (APS). Note that APS is available for only the "B" models of
the OC-3 and OC-12 uplink cards.
For descriptions of switch configuration tasks, see Chapter 5, "Configuring the MGX 8850 Switch."
For descriptions of how to modify partitioning, specify APS, and add UNI-port connections, see
Chapter 6, "Card and Service Configuration."
4-18 Cisco MGX 8850 Installation and Configuration, Release 1.1.10, Part Number 78-6186-03
The common instructions for installing any card in this switch appear in an earlier section,
Handle the PXM front card very carefully to preserve the alignment of the attached disk
Before using the switch, verify that the daughter card type on the PXM corresponds to the
If you accidentally try to insert a service module back card into slot 7, 8, 23, or 24, then