Troubleshooting guide

7-3
ATM and Layer 3 Switch Router Troubleshooting Guide
OL-1969-01
Chapter 7 Troubleshooting LAN Emulation Switching Environments
Initial Troubleshooting of LANE
Initial Troubleshooting of LANE
This section describes how to use the Internet Control Message Protocol (ICMP) ping command to test
for connectivity between the switch router and either a router or an Ethernet switch.
To test for Ethernet connectivity, perform the following task:
Follow these steps to troubleshoot LANE connections:
Step 1 Use the ping command to confirm the connection between the switch router (EngFl1Ls1) and the
Catalyst 5000 (EngFl1Cas1) in the engineering building:
EngFl1Ls1# ping 172.20.52.21
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.20.52.100, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
EngFl1Ls1# ping 172.20.52.20
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.20.52.20, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
EngFl1Ls1#
Step 2 Check the Success rate field. It should indicate 100 percent. This indicates that the ICMP packet was
sent and returned.
If the success rate is less than 100 percent, continue with the following test to determine the problem
with the LANE configuration. Refer to the “Configuring LAN Emulation” chapter in the
ATM Switch Router Software Configuration Guide.
Checking Basic LANE Configuration
Use the following commands to test the LANE connection status and performance:
Command Purpose
ping ip ip-address Tests the configuration, using the ping command.
The ping command sends an echo request to the
host, which is specified in the command line.
Command Purpose
show lane default-atm-addresses Shows the LANE default ATM address.
show lane Shows the LANE connection status.
show lane client Shows the LANE client connection status.