2-57
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 Med ia Gateway
Front Cards
PXM45
Supported models: MGX 8850 (PXM45), MGX 8850/B (PXM45), MGX 8950, MGX 8880
The PXM45, PXM45/B, and PXM45/C allow service providers to implement a complete range of
narrowband services for high-density edge applications and broadband aggregation with 45 Gbps of
nonblocking switching.
Note In this guide, the PXM45, PXM45/B, and PXM45/C are identified collectively as the PXM45, unless
otherwise specified.
In the MGX 8950, PXM45 cards are used as node controllers only. Their 45Gbps switching matrix is not
used in the MGX 8950. Up to four XM60 cards provide up to 24 0G of non-blocking switching in the
MGX 8950.
The PXM45 can also be used exclusively for broadband aggregation an d backbone functions. The
PXM45 controls the switch and supports external interfaces for user access.
The PXM45 is part of a card set that consists of a front card, a user interface back card, and a hard
drive card. The switch can support up to two card sets.
One user interface back card (PXM-UI-S3 or PXM-UI-S3/B) provides management interfaces for
configuring the switch with external clocks and triggering external alarms. The user interface back card
is installed in the top bay of the switch (when the switch is viewed from the rear) behind the PXM45.
Note The PXM-UI-S3 is not supported with the PXM45/C cards. The PXM-UI-S3/B is not supp orted with the
PXM45 cards or PXM45/B cards.
One hard drive back card (PXM-HD) houses the disk drive that contains all switch and network-related
information. The PXM-HD is installed in the bottom bay of theswitch (when the switch is viewed from
the rear) behind the PXM45.

PXM45 Support on MGX 8850 (PXM45) or MGX 8850/B (PXM45)

The PXM45 operates with the following module types:
•AXSM, page 2-13
•CESM, page 2-23
•FRSM, page 2-27
•FRSM-12-T3E3, page 2-34
•RPM-PR, page 2-62
•RPM-XF, page 2-65
•SRM, SRME, SRM-3T3/C, and SRME/B: SRM, page 2-68
•VISM-PR, page 2-77
•XM60, page 2-89 (this configuration does not ship from the factory)
Note For a detailed list of supported modules for the MGX 8850 (PXM45) or MGX 8850/B (PXM45) switch,
see Table 1 -3.