Troubleshooting guide

CHAPTER
7-1
ATM and Layer 3 Switch Router Troubleshooting Guide
OL-1969-01
7
Troubleshooting LAN Emulation Switching
Environments
This chapter provides troubleshooting information for connectivity and performance problems in LAN
emulation (LANE) switching environments. The ATM Forum defined the LANE specification so that
legacy LAN users can take advantage of the benefits of ATM without requiring modifications to
end-station hardware or software. For an overview of LANE on a switch router, refer to the “Configuring
LAN Emulation” chapter in the ATM Switch Router Software Configuration Guide. For an overview of
LANE on the Catalyst 5000 and 6000 ATM modules, refer to the “Configuring ATM LAN Emulation”
chapter in the ATM Software Configuration Guide and Command Reference: Catalyst 5000 and 6000
ATM Modules.
Before you begin, make sure that all physical port connections are working correctly. See Chapter 5,
“Troubleshooting Switch Router ATM Interface Connections.”
This chapter contains the following sections:
• Example of LANE Troubleshooting, page 7-1
• Initial Troubleshooting of LANE, page 7-3
• Checking the Configuration Server Database, page 7-8
• Debugging the LANE Connection, page 7-9
Example of LANE Troubleshooting
This section describes LANE troubleshooting, using the example network in Figure 6-1 in Chapter 4,
“Example Network,” and Figure 7-1.
Figure 7-1 LANE Example Network
Server farm
12116
(EngFl1Cas1)
ATM LANE Interface = 4/0
(EngFl1Ls1)
Interface = 13/0/0
ATM attached
UNI servers