Troubleshooting guide

6-16
ATM and Layer 3 Switch Router Troubleshooting Guide
OL-1969-01
Chapter 6 Troubleshooting Switch Router ATM Network Connections
Troubleshooting SVC Connections on a PNNI Routing Network
Debugging Two-Ended Soft PVC Connections
This section outlines the debug commands used to troubleshoot two-ended soft PVC connection
configurations.
Use the following debug commands to check the two-ended soft PVC connection configuration and
set-up processes:
Note In addition to the purpose shown in the following table, the debug commands also identify the cause
of failure on the Passive Half leg if there is a traffic parameter mismatch.
Troubleshooting SVC Connections on a PNNI Routing Network
This section describes how to troubleshoot switched virtual channel (SVC) connections, using the show
command and debug command. These commands can be used to troubleshoot problems with SVC set-up
between end systems. The SVCs are automatically configured on the switch router when the cables are
connected and the switch router is powered on.
In the example network in Figure 6-4, EndSys1 originates the signaling messages, which attempt to
establish an SVC connection to EndSys2. In this example, Endsys1 connects directly to the switch
router, named RemDvLs1, over the User-Network Interface (UNI) connection at ATM interface 3/1/1.
Endsys2 is connected directly to the switch router, EngFl1Ls1, over the UNI connection at ATM
interface 0/0/0. Both switch routers connect to other switch routers using network-to-network interface
(NNI) connections.
Figure 6-4 SVC Connection Example
Command Purpose
debug atm sig-soft atm
card/subcard/port
Displays information about ATM signaling for soft VCs and
VPs.
debug atm rm events Displays information about ATM resource management
events.
no debug all Turns off all debugging.
RemDvLs1
EngF11Ls1
UNI
UNI
EndSys1
3/1/1
0/0/0
EndSys2
11552
(other ATM switch routers)
NNI
NNI