Specifications

1-10

Cisco MGX 8850 (PXM1E/PXM45), Cisco MGX 8950, Cisco MGX 8830, and Cisco MGX 8880 Configuration Guide

Release 5.0.10, OL-3845-01 Rev. B0, August 16, 2004

Chapter 1 Preparing for Configuration

Typical Topologies

Table 1-3 illustrates the differences between the PXM45/A, PXM45/B, and PXM45/C cards.

Typical Topologies

Release 5 of the Cisco MGX 8850 (PXM45) and Cisco MGX 8950 switches support the following

topologies:

• Core switch

• Multiservice edge aggregation

• DSL edge aggregation

Release 5 of the Cisco MGX 8850 (PXM1E) and Cisco MGX 8830 switches supports the following

topologies:

• Multiservice edge aggregation

• DSL edge aggregation

Table 1-3 Differences between PXM 45 Cards

Feature PXM45

1. The PXM45 is sometimes called the PXM45/A and is not supported in Release 5 software.

PXM45/B PXM45/C

Maximum number of UNI/NNI interfaces

per node supported

192 4,000 4,000

Maximum number of preferred routes

supported

5,000 5,000 10,000

Maximum number of narrowband

connections supported

N/A 27 k 27 k

Maximum number of SPVC/SVC

connections supported

250 k 250 k 250k

Maximum number of PNNI links

supported

100 100 128