IBM ATM OC-3c manual Why has the LEC Operation Failed?, Operational

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.

Identifying the Problem D-11

Table D-3LEC 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	The LEC receives configuration
Configuration	information from the LECS in
from LECS	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.