In one network we wanted to create Virtual TE link between ASON NE and Non-ASON NE. Virtual TE link was supposed to made like below:
ASON NE-8SL16------(TE Link)------Non-ASON NE-11SL16
But it failed to create it successfully. Connectivity of links between Two NEs was STM16 Level. Control Channel status in LMP was "Config_Send" for ASON NE-8SL16.
After analyzing the network and parameters it was found that Virtual TE link cannot be created if "ASON Protocol Management" is enabled on that board. You can check that by going in NE Explorer>>ASON>>Advance Maintenance>>ASON Protocol Management and then select that board. In our case it was ASON-NE-8SL16. Disable it and then check again. Virtual TE link was successfully created after disabling ASON Protocol Management funciton .
Check the followings:
1) When creating Virtual TE link make sure the source and sink NE. Also make sure the Line Uints.
2) Check ASON is disabled on Non-ASON NE.
3) Check Node ID of all ASON NEs and should be consistent
4) Check ASON Protocol Management is disabled for the desired board on which Virtual TE link will be made
ASON Protocol Management function should be disabled if you want to creare Virtual TE Link. Otherwise it will not let you create Virtual TE link. Because on the other side there is Non-ASON NE which cannot read ASON Protocols.