IBM ATM OC-3c manual Vlan or Elan Problems, Communicate with each, Other, Insufficient Resources

D-22APPENDIX D: TROUBLESHOOTING

VLAN or ELAN Problems

Table D-9VLAN or ELAN Problems

Problem	Possible Causes	Possible Solutions
The configured LECs cannot	■ The devices that need to communicate	■	Check that the ELAN name has been set up correctly.
communicate with each	are not in the same VLAN/ELAN.	■	Check LAN Emulation supported on the ATM Switch.
other
			The ATM Switch must use LAN Emulation Version 1.0.
Possible symptom:		■	Check that the correct VPI/VCI are used and that
The Last LEC Failure Reasons,
			there they have not been mismatched. Refer to
described in Table D-4 on page			“Intermittent failure of a configured LEC to connect
D-12, is LE_CONFIGURE or			to the LECS or LES” below.
similar error type.		■	Ensure that both LECs are within the same

VLAN/ELAN. LECs not in the same VLAN/ELAN can only communicate using a router.

Insufficient Resources	■ Excessive traffic is overloading the ATM
	device, and it does not have sufficient
	resources to assign new connections.
	■ A LEC requires a separate connection for
	each LEC with which it needs to
	communicate. If you try to bring up all of
	the connections at the same time, the
	ATM Module may run out of connections.

■You may need to reconfigure or restructure your network. For example, you may wish to use a separate ATM Switch for LECS functionality.

■Do not try to bring up too many connections at the same time.

■You may need to reconfigure or restructure your network.