Troubleshooting guide

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ATM and Layer 3 Switch Router Troubleshooting Guide
OL-1969-01
Chapter 6 Troubleshooting Switch Router ATM Network Connections
Troubleshooting Dropped Connections
The following example shows how to confirm the configuration of ATM subinterface 1/0/0.99 on the
switch router RsalFl1Ls1 located in the remote sales building:
RsalFl1Ls1# show atm vc interface atm 4/0/0
Interface VPI VCI Type X-Interface X-VPI X-VCI Encap Status
ATM4/0/0 0 5 PVC ATM2/0/0 0 41 QSAAL UP
ATM4/0/0 0 16 PVC ATM2/0/0 0 33 ILMI UP
ATM4/0/0 99 40 PVC ATM1/0/0.99 99 50 UP
RsalFl1Ls1#
The interface ATM 4/0/0 field indicates that the cross-connect is configured correctly.
If you determine that the PVP is not configured correctly, see the “Configuring Virtual Connections”
chapter in the ATM Switch Router Software Configuration Guide for configuration information.
Debugging VP Tunnel Connection Management
Use the following commands to debug the VP tunnel connection management:
Troubleshooting Dropped Connections
This section describes how to troubleshoot the PVC traffic being dropped. In the example network in
Figure 6-6, the connection between the DNS and e-mail servers and the switch router on Floor 1 of the
administration building and the Catalyst 5000 switch on Floor 1 of the manufacturing building is
dropping cells at some node in the connection.
This connection includes the following interfaces:
• AdminFl1Ls1, ATM interface 1/0/0
• ManuFl1Ls1, ATM interface 0/1/0
• ManuFl1Ls1, ATM interface 4/0/0
• ManuFl1CaS1, ATM LANE interface 1/1
• AdminFl1Ls1, ATM interface 4/0/1
Command Purpose
debug atm conn errors Enables connection management error
debugging.
debug atm conn events Enables connection management event
debugging.
no debug all Disables all debugging.