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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
Chapter 2 Illustrated Card List for MGX Switches and the MGX 8880 Media Gateway
Front Cards
Note For information on VXSM software features and configurations, refer to the Cisco Voice Switch Services
(VXSM) Configuration and Command Reference Guide for MGX Switches, Release 5. For technical
specifications for the VXSM cards, see the “Double-Height Service Module Specifications” section on
page A-2.
VXSM T3 Interface
The VXSM T3 back card (part VXSM-BC-6-T3) supports up to 6 ports. The VXSM T3 back cards are
deployed in pairs; each supporting 3 T3 ports. Table 2-39 provides information about the VXSM T3 back
card interfaces.
Note For information on VXSM software features and configurations, refer to the Cisco Voice Switch Services
(VXSM) Configuration and Command Reference Guide for MGX Switches, Release 5. For technical
specifications for the VXSM cards, see the “Double-Height Service Module Specifications” section on
page A-2.
XM60
Supported models: MGX 8950
The XM60 is the switch fabric that powers the MGX 8950 switch. Up to four XM60s can be installed in
the MGX 8950 switch to provide 240 Gbps of switching capacity for the system. All four XM60s should
be installed to provide scalable bandwidth sharing and for full redundancy. (Operation with one or two
XM60 cards is not supported.)
The switch scheduling hardware optimizes switching throughput by adjusting to various traffic flows. A
single point of failure in the switch fabric does not block traffic flow in a system with multiple switch
modules. During normal operations, all installed XM60s can participate in cell switching to enable
maximum hardware usage and reliability.
Note The XM60s do not have corresponding back cards.
Table 2-39 VXSM T3 Back Card Interfaces (Part VXSM-BC-3T3)
Parameter T3
Port speed 44.736 Mbps
Maximum number of ports per back
card
3
Port media 75-ohm coaxial cable
Port connector SMB
Line coding Binary 3-zero substitution (B3ZS)
Redundancy 1:1