Cisco Cisco IGX 8400 Modules Troubleshooting Guide

Introduction
 Prerequisites
      Requirements
      Components Used
      Conventions
 UXM and BXM Functionality
 Examine PVC Via Segments
      Via Node Discards Traffic Example
 Related Information

This document describes how to troubleshoot permanent virtual circuit (PVC) problems in a Cisco IGX 8400
or BPX 8600 series switch running 9.1 Switch Software or later.

There are no specific requirements for this document.

The information in this document is based on this software and hardware:

Switch Software 9.1 and later

• 

IGX 8400 Universal Switching Module (UXM)

• 

BPX 8600 Broadband Switch Module (BXM)

• 

The information in this document was created from the devices in a specific lab environment. All of the
devices used in this document started with a cleared (default) configuration. If your network is live, make sure
that you understand the potential impact of any command.

For more information on document conventions, refer to the Cisco Technical Tips Conventions.

UXM and BXM modules support ATM Forum compliant traffic between user and network equipment and
within Cisco networks. Both modules display statistics for connections whether they are operating in line
mode or trunk mode. Based on this functionality, the UXM and BXM can display statistics at each point in a
connection path.