Cisco Systems Cisco MGX 8950 manual PXM-UI-S3, Pxm-Hd, MGX-SMFLR-8-155-LC/B

Chapter 2 Product Overview

MGX 8950 Card Sets

Note Cisco Systems recommends you use all four XM-60 modules for full redundancy.

A card set consists of a front card with its attached daughter card and one or two back cards (or line cards). The front card contains the processing intelligence and, on the daughter card, the firmware that distinguishes the interface (OC-48, OC-12, OC-3, T3, E3, and so on). The back cards on the AXSM simply provide the electrical or optical interface for one or more lines of a particular type. See Table 2-1for a list of front and back cards.

Note The daughter card is not a field-replaceable module, so this manual does not describe it.

Table 2-1 MGX 8950 Front and Back Cards

Card	Description
Switch Module (XM-60)	Provides 60 Gbps of switching capability each and provides up to
	240 Gbps of switching capacity (using four XM-60s).
Processor Switching Module (PXM45/B)	Front card controlling the switch and supporting external interfaces for
	user-access. The back cards consist of a user interface card
	(PXM-UI-S3) and the hard drive card (PXM-HD).
Processor Switching Module User Interface	Contains various types of user interface ports to let you access and
(PXM-UI-S3)	control the switch. Provides Stratum 3 network clocking.
Processor Switching Module Hard Drive	Houses the disk drive containing all switch and network-related
(PXM-HD)	information.
ATM Switch Service Module	Double-height, dual-role card that serves as a trunk, and provides
(MGX-AXSM-1-2488/B)	1 OC-48 or STM-16,1 line at 2488 Mbps.
ATM Switch Service Module	Double-height, dual-role card that serves as a trunk or a UNI, and
(MGX-AXSM-16-155/B)	provides 16 OC-3c or STM-1, 16 lines at 155 Mbps.
ATM Switch Service Module	Double-height, dual-role card that serves as a trunk or a UNI, and
(MGX-AXSM-4-622/B)	provides 4 OC-12c or STM-4, 4 lines at 622 Mbps.
ATM Switch Service Module	Double-height, dual-role card that serves as a trunk or a UNI, and
(MGX-AXSM-16-T3E3/B)	provides 16 T3 or E3 lines.
Service Network Module	The MGX-SMFIR-2-622/B is an intermediate-range module for the
(MGX-SMFIR-2-622/B	AXSM and provides a SONET/SDH OC12/STM4 ATM interface at
MGX-SMFLR-2-622/B)	622 Mbps with SC connectors.
	The MGX-SMFLR-2-622/B is a broadband network long-range module
	for the AXSM and provides a SONET OC12/STM4 ATM interface at
	622 Mbps with an SC connectors.
Service Network Module	The MGX-MMF-8-155-MT/B is a short-range, multi-mode fiber
(MGX-MMF-8-155-MT/B,	module for the AXSM providing 8 SONET/SDH OC3/STM1 ATM
MGX-SMFIR-8-155-LC/B, and	interfaces at 155 Mbps, and has MTRJ connectors.
MGX-SMFLR-8-155-LC/B)	The MGX-SMFIR-8-155-LC/B is an intermediate-range, single-mode
	fiber module for the AXSM providing 8 SONET/SDH OC3/STM1 ATM
	interfaces at 155 Mbps, and has an LC connector.
	The MGX-SMFLR-8-155-LC/B is a long-range, single-mode fiber
	module for the AXSM providing 8 SONET/SDH OC3/STM1 ATM
	interfaces at 155 Mbps, and has LC connectors.
	Cisco MGX 8950 Hardware Installation Guide
Release 2.1, Part Number 78-11273-01 Rev. B0, March 2002		2-3