A-1
ATM Switch Router Software Configuration Guide
OL-7396-01
A P P E N D I X
A
PNNI Migration Examples
This appendix provides examples of how to migrate a flat network topology to a Private
Network-Network Interface (PNNI) hierarchical network topology, and includes the 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.
Figure A-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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