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ATM Switch Router Software Configuration Guide
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APPENDIX
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PNNI Migration Examples

This appendix provides examples of how to migrate a flat network to pology to a Private
Network-Network Interface (PNNI) hierarchical network topology, and includes t he following sections:
Adding a Higher Level of PNNI Hierarchy, page A-1
Adding a New Lowest Level of PNNI Hierarchy, page A-7
Note Detailed PNNI configuration instructions are described in the chapter Chapter 11, “Configuring ATM
Routing and PNNI.” For a functional description of hierarchical PNNI, refer to the Guide to ATM
Technology. For a complete description of the commands mentioned in this chapter, refer to the ATM and
Layer 3 Switch Router Command Reference publication.

Adding a Higher Level of PNNI Hierarchy

Figure A-1 shows an example network with two PNNI peer groups connected by an Interim Inter-Switch
Signalling Protocol (IISP) interface.
FigureA-1 Two PNNI Peer Groups Connected by an IISP Interface
San Francisco peer group New York peer group
SanFran.BldA.T4
T4
SanFran.BldA.T5
T5
NewYork.BldB.T2
NewYork.BldB.T1
T2
T1
NewYork.BldB.T3
T3
IISP
Level 72
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