[j-nsp] Tracing username through MAC in Juniper E320.

[Tausif Mehmood]

Dear All,

Hope you all will be fine. i m a fresh nut in your field...... I have a query 
related to Juniper E320.

I have a subscriber MAC but unable to trace his username . I can trace 
Subscriber MAC using his username but don't know how to trace Subscriber 
username through MAC.
I have tried a lot but unsuccesful so i m posting here.    kindly share the 
commands if you know please....

 Best Regards
Tausif Mehmood