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Cisco MGX 8800/8900 Series Hardware Installation Guide
Releases 2 - 5.2, Part Number OL-4545-01, Rev. H0, May 2006
Chapter2 Illustrated Card List for MGX Switches and the MGX 8880 Media Gateway
Front Cards
Note For information on PXM1E software features and configurations, refer to the Cisco MGX 8800/89 00
Series Configuration Guide, Release 5.2. For technical specifications for the PXM1E cards, see the
“PXM1E Specifications” section on pageA-3.
Module Configurations
PXM1E card redundancy is preconfigured on the Cisco MGX switches. If PXM 1Es are inserted in both
slots 7 and 8 on an MGX 8850 (PXM1E) switch or slots 1 and 2 on an MGX 8830 switch, they
automatically operate as redundant cards. If you install only one PXM1E in the switch, it operates as a
standalone card. It is recommended that you install two to provide fault tolerance for the PXM1E. If one
card goes down, a redundant card takes over.
Note For the PXM1E card to operate redundantly, Y-cabling or 1+1 card and APS line redundancy must be
present on the ATM and external clock ports on the back cards.
The following module configurations are supported for the PXM1E:
•Standalone.
•Card set redundancy (Y-cable)—Redundant PXM1Es must be placed in slots 1 and 2 for MGX 8830
or slots 7 and 8 for MGX 8850 (PXM1E).
•1:1 APS line redundancy (intracard)—OC-3c interfaces only.
•1+1 card and APS line redundancy (intercard)—on PXM1E-4-155 and PXM 1E-8-155.
•IMA—PXM1E-16-T1E1 only.
Note For module configuration information, refer to Chapter4, “Planning for Card Redunda ncy, Line
Redundancy, and Bulk Distribution”.