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Identifying the Problem
D-11
Why has the LEC Operation Failed?
There are two fields on the ATM VLAN LEC Status
screen, described in step 9, that can be used to
troubleshoot LEC failure problems. The
LEC Operation
at Failure
field identifies the operation that was taking
place when the LEC failed to successfully join the
Emulated LAN Services. The
Last LEC Failure Reason
field identifies the probable cause of the problem.
Use Table D-3, in conjunction with Table D-4 on page
D-12 to try and resolve the problem.
Table D-3
LEC Operation at Failure
Operation
Description
None
There are no known operation failures.
Calling LECS
The LEC is trying to connect to the
LECS to receive LANE configuration
information.
Reading
Configuration
from LECS
The LEC receives configuration
information from the LECS in
preparation for joining the LES.
Joining LES
The LEC is trying to join the ELAN by
registering itself with the LES that
controls that ELAN.
When the LEC has joined the LES, it is
given a unique
LAN Emulation Client
Identifier (LECID)
, knows the Emulated
LAN’s maximum frame size, and knows
its LAN type (either Ethernet or Token
Ring).
Initial Registration
After joining, a LEC can register any
number of MAC addresses and/or
Route Descriptors (for Token Ring
implementations).
Connecting to BUS
In order to establish a connection to
the
Broadcast and Unknown Server
(BUS)
the LEC requires the broadcast
address. It requests the broadcast
address from the LES.
Operational
The LEC is now part of the ELAN.
Summary of Contents for OPTIONS ATM OC-3c
Page 1: ...8271 Nways Ethernet LAN Switch ATM OC 3c Module User s Guide...
Page 6: ......
Page 10: ...4 ABOUT THIS GUIDE...
Page 23: ...Asynchronous Transfer Mode ATM Layer 2 11 Figure 2 7 Switching Cells using VPI and VCI values...
Page 28: ...2 16 CHAPTER 2 NETWORK LAYER CONCEPTS...
Page 31: ...Extending VLANs into the ATM Network 3 3 Figure 3 3 Extending VLANs into the ATM Network...
Page 32: ...3 4 CHAPTER 3 VIRTUAL LAN CONCEPTS...
Page 39: ...Campus Configuration 5 3 Figure 5 2 Campus and Cost Sensitive Network...
Page 50: ...7 2 CHAPTER 7 ACCESSING MANAGEMENT FEATURES Figure 7 1 Screen Map...
Page 80: ...9 14 CHAPTER 9 MONITORING THE ATM MODULE...
Page 87: ...Safety Notices A 7 IEC 950 SELV SELV...
Page 88: ...A 8 APPENDIX A SAFETY INFORMATION...
Page 90: ...B 2 APPENDIX B SCREEN ACCESS RIGHTS...
Page 94: ...C 4 APPENDIX C ATM MODULE TECHNICAL SPECIFICATIONS...
Page 98: ...D 4 APPENDIX D TROUBLESHOOTING Figure D 1 Troubleshooting Flow Diagram...
Page 120: ...E 2 APPENDIX E TECHNICAL SUPPORT AND SERVICE...
Page 136: ...2 BIBLIOGRAPHY...
Page 140: ...4 INDEX...