Diagnosing LAN Emulation Problems
8265 LEC Cannot Register to the LES/BUS
Use the SHOW DEVICE command and look at the
subnet lan emulation
status message:
Abnormal Termination: LES connection cleared. ATM Forum cause xx:
The LEC automatically tries to reconnect to the LES/BUS when the connection is lost. It will try to
reconnect every 5 seconds, 5 times, and thereafter every 1 minute.
Cause Code: 1
Explanation: A wrong LES address was entered using the SET DEVICE LAN_EMULATION_CLIENT command
(
les_atm_address
parameter), or the port attached to the LES is not in service.
Steps to Take:
1. Check is the port status is
UP
(via the SHOW PORT command), then check that the LES ATM address is exactly
the same as the one entered in the 8265.
Cause Code: 3
Steps to Take:
If the LE server is in the same peer group (PNNI links):
1. A PNNI port has not enough bandwidth. Having several PNNI ports on the module may reach the bandwidth
limit. Spread the PNNI ports over several modules.
2. The ATM address of an 8265 located on the PING path has been changed.
Disable the PNNI link and re-enable it.
If the above does not solve the problem, take a PNNI dump (with the DUMP PNNI command), and contact your
IBM representative.
If the LE server is in another peer group (IISP links):
1. The IISP network-side/user-side definition rules have not been applied.
Check that one side of the link is defined as user, and that the other side is defined as network.
Check that the same signalling stack (3.0 or 3.1) is used at each end of the link.
2. No logical-link has been defined for the port.
Define the logical link, using the SET REACHABLE_ADDRESS command.
3. The peer logical links do not match (bad vpi, peer group id, or bandwidth match).
Check that the reachable addresses on both sides correspond, and if necessary, re-define them.
4. The VPI number does not match.
Correct the VPI number using the SET PORT command.
5. The VP-tunnel is defective.
Ask your VP-tunnel provider to test it.
Appendix A. Troubleshooting
141
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