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Cisco MGX 8800/8900 Series Software Configuration Guide

Release 5.1, Part Number OL-6482-01, Rev. A0, January 25, 2005

Chapter 1 Preparing for Configuration

Typical Topologies

Table 1-4 illustrates the differences between the PXM45/A, PXM45/B, and PXM45/C cards.

Typical Topologies

Release 5.1 of the MGX 8850 (PXM45), Cisco MGX 8850/B, and MGX 8950 switches support the

following topologies:

• Core switch

• Multiservice edge aggregation

• DSL edge aggregation

SPVCs

All PXM1E

All AUSM

All AXSM

All CESM

All FRSM

All MPSM

All PXM1E

All RPM

All AUSM

All AXSM

All CESM

All FRSM

All MPSM

All PXM1E

All RPM

All AUSM

All AXSM

All CESM

All FRSM

All MPSM

All PXM1E

All RPM

All AUSM

All AXSM

All CESM

All FRSM

All MPSM

All PXM1E

All RPM

All AUSM

All AXSM

All CESM

All FRSM

All MPSM

All PXM1E

All RPM

All AXSM

All RPM

All AXSM

All RPM

SVCs

All PXM1E cards. Supported on all

AXSM cards.

All PXM1E

MPSM-16-T1E1

MPSM-155-T3E3

All PXM1E All PXM1E

MPSM-16-T1E1

MPSM-155-T3E3

All AXSM All AXSM

Closed User

Groups (CUGs)

Yes Yes Yes Yes Yes Yes Yes

1. Single-height and double-height cards can be mixed in a chassis if the switch model supports both types. Double-height cards require two single card slots.

2. Supported only on PXM45/B and PXM45/C cards.

3. Supported only on PXM45/B and PXM45/C cards. Although the PXM45/B can support CESM-8T1 cards, Cisco recommends using the CESM-8T1/B.

4. SRME/B cards do not support E3 ports.

5. SRME APS line redundancy is only supported on PXM45/B and PXM45/C.

6. You must have four XM-60 cards installed on your Cisco MGX 8950 switch before you install any AXSM-XG cards.

7. Supported only on Release 5 switches.

8. For MGX 8850 (PXM45) and MGX 8950 switches, MPLS and PNNI can be used simultaneously on the same switch and on the same link.

Table 1-3 Cisco MGX 8850 (PXM1E/PXM45), Cisco MGX 8850/B, Cisco MGX 8950, Cisco MGX 8830, Cisco MGX 8830/B,

and Cisco MGX 8880 Capabilities (continued)

Cisco MGX Model

Feature

8850 (PXM1E) 8850 (PXM45) 8850/B 8830 8830/B 8880 8950

Table 1-4 Differences between PXM 45 Cards

Feature PXM45

1. The PXM45 is sometimes called the PXM45/A and is not supported in Release 5.1 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