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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
The XM60 provides the following features:
• Support for 60, 120, 180, or 240 Gbps of cross-point switching capacity
• Dynamic sharing of capacity across multiple XM60s, allowing for 3:1 redundancy
• Data forwarding capabilities in the event of a control processor failure, since the switching module
is separate from the control processor
• An aggregate bandwidth of 10 Gbps per slot
• Four switch ASICs and four serial links to each AXSM slot (one serial link per switch ASIC)
• Two serial links to PXM45 cards from the upper two XM60s (slots 9 and 10)
The XM60 performs the following functions:
• Extracts in-band requests from the AXSM cards and PXM45 cards
• Schedules and grants access to the AXSM cards and PXM45 cards
• Performs spatial multicast functions to the egress slots
• Provides counters for error statistics on a per serial link basis
• Provides an interface to the CPU on the PXM45 cards for statistic collections
Note The MGX 8950 switch and XM60 card require PXM45/B or PXM45/C cards.