Troubleshooting guide
7-2
ATM and Layer 3 Switch Router Troubleshooting Guide
OL-1969-01
Chapter 7 Troubleshooting LAN Emulation Switching Environments
Example of LANE Troubleshooting
A single emulated LAN consists of a 155 multimode fiber physical connection between the switch router
(EngFl1Ls1) and the Catalyst 5000 Fast Ethernet switch (EngFl1Cas1) in the engineering building. The
switch router is configured as the LAN emulation configuration server (LECS), the LAN emulation
server (LES), and the LAN emulation broadcast-and-unknown server (LANE BUS).
The LANE example network for the engineering building in Figure 7-1 is configured as follows:
• Switch router (EngFl1Ls1) LECS, LES, BUS configuration:
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ATM 155 multimode fiber interface 13/0/0 connected to Catalyst 5000 ATM LANE module 4/0
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Interface ATM address—47.009181000000000000000001.00400B0A2E82.01
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Interface IP address—172.20.52.25 255.255.255.0
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LANE client—47.00918100000000E04FACB401.00E04FACB402.00
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LANE server—47.00918100000000E04FACB401.00E04FACB403.00
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LANE BUS—47.00918100000000E04FACB401.00E04FACB404.00
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LANE configuration server ATM
address—47.00918100000000E04FACB401.00E04FACB405.00
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Interface IP address—172.20.52.20 255.255.255.0
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ELAN name—eng_elan
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LANE database name—eng_database
• Catalyst 5000 switch (EngFl1Cas1) LANE client configuration:
–
ATM LANE module multimode interface 4/0 connected to switch router, ATM 155 multimode
interface 13/0/0
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Interface IP address—172.20.52.21 255.255.255.0
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Interface ATM address—47.00918100000000E0F75D0401.00E0F75D041F.00
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ELAN name—eng_elan
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LANE database name—eng_database
Note The ATM addresses are examples only. The addresses on your switch might be different.
Note Emulated LAN entities coexist on one or more Cisco routers or switch routers. On Cisco routers or
switch routers, each LANE server and broadcast-and-unknown server is always a single entity. Other
LANE components include switch routers—those that support the Integrated Local Management
Interface (ILMI) and signalling. Multiple emulated LANs can coexist on a single ATM network.