CHAPTER
11-1
ATM Switch Router Software Configuration Guide
OL-7396-01
11
Configuring ATM Routing and PNNI
This chapter describes the Interim Interswitch Signaling Protocol (IISP) and Private Network-Network
Interface (PNNI) ATM routing protocol implementations on the ATM switch router.
Note This chapter provides advanced configuration instructions for the Catalyst8540 MSR,
Catalyst 8510 MSR, and LightStream 1010 ATM switch routers. For conceptual and background
information, refer to the Guide to ATM Technology. For complete descriptions of the commands
mentioned in this chapter, refer to the ATMSwitch Router Command Reference publication.
This chapter includes the following sections:
Overview, page 11-1
IISP Configuration, page 11-2
Basic PNNI Configuration, page 11-9
Advanced PNNI Configuration, page 11-29
Mobile PNNI Configuration, page 11-53
PNNI Connection Trace, page 11-57

Overview

To place calls between ATM end systems, signaling consults either IISP, a static routing protocol, or
PNNI, a dynamic routing protocol. PNNI provides quality of service (QoS) routes to signaling based on
the QoS requirements specified in the call setup request.
Note The Cisco IOS Release 12.1(22)EB and later releases for the Catalyst 8540 MSR, Catalyst 8510 MSR,
and LightStream 1010 ATM switch router support processing of the pass along request bit (bit 4) in the
compatibility instruction indicator field of a received unknown/unexpected message as described in the
PNNI Specification Version 1.1. This feature is enabled by default and no CLI/SNMP support is required
to enable it.
For detailed discussions of the following topics, refer to the Guide to ATM Technology:
IISP routing
PNNI signaling and routing
Mechanisms and components of single-level and hierarchical PNNI