Specifications

CHAPTER
1-1
Cisco MGX 8850 (PXM45) and MGX 8950 Software Configuration Guide
Release 3, Part Number 78-14788-01 Rev. C0, January 2004
1
Preparing for Configuration
This chapter introduces the Cisco MGX 8850 and the Cisco MGX 8950 multiservice switches and
common switch topologies, provides an overview of the configuration process, and presents guidelines
for collecting the information you will need to complete the configuration.
Cisco MGX 8850 and Cisco MGX 8950 Switches
TheCisco MGX 8850 multiservice switch and the Cisco MGX 8950 multiservice switch provide support
for the following features:
• Permanent virtual circuits (PVCs)
• Soft permanent virtual paths (SPVPs)
• Soft permanent virtual circuits (SPVCs)
• Switched virtual circuits (SVCs)
The Cisco MGX 8950 switch includes a cell bus to operate the combination of the PXM45 and the new
XM60 card, which provides 240 Gbps as opposed to 45 Gbps on the PXM45 in the Cisco MGX 88500.
The following table identifies the capabilities supported in the Cisco MGX 8850 and Cisco MGX 8950
switches.
Table 1-1 Cisco MGX 8850 vs. Cisco MGX 8950 Capabilities
Feature Cisco MGX 8850 Cisco MGX 8950
Total Number of Slots 32 single-height or 16 double-
height or combination.
32 single-height or 16 double-
height or combination.
Slots for Processor Cards 2 double-height. 2 double-height.
Slots for Service Modules 24 single-height or 12
double-height or combination.
24 single-height or 12
double-height or combination.
Physical Attributes
Height 29.75 29.75
Width 17.72 17.72
Depth 21.5 21.5
Services
Local Switching Yes Yes