Troubleshooting guide

CHAPTER

6-1

ATM and Layer 3 Switch Router Troubleshooting Guide

OL-1969-01

Troubleshooting Switch Router ATM

Network Connections

This chapter describes troubleshooting information about connectivity and performance problems in

ATM switching network connections, and contains the following sections:

• Checking Network Connections, page 6-1

• Troubleshooting PVP and PVC Connections, page 6-2

• Troubleshooting Soft PVC Connections, page 6-9

• Troubleshooting Two-Ended Soft PVC Connections, page 6-12

• Troubleshooting SVC Connections on a PNNI Routing Network, page 6-16

• Troubleshooting the PNNI Database, page 6-30

• Troubleshooting PNNI Peer Group Leaders, page 6-33

• Troubleshooting the PNNI Lowest-level Interface, page 6-36

• Troubleshooting PNNI SVCC-RCC and Higher-level Links, page 6-42

• Troubleshooting PNNI Hierarchical Networks, page 6-47

• Troubleshooting PNNI Addresses and Address Summarization, page 6-52

• Troubleshooting Virtual Path Tunnel Connections, page 6-55

• Troubleshooting Dropped Connections, page 6-58

• Using PNNI Trace Connection, page 6-64

Checking Network Connections

Before you begin, make sure that all physical port connections are working correctly. See Chapter 5,

“Troubleshooting Switch Router ATM Interface Connections.” Confirm the following:

• Proper cable insertion. Be sure that transmit and receive cable pairs match.

• Proper cable types. Connector fit does not ensure that the cables are the proper types or are

cross-connected correctly.

• Reliable cables.

• No-shutdown mode on all interfaces on both ends of the cable.

• Proper interface configuration (for example, framing and line coding).