How "Prio.Nbr" is caulcute ?

[delahais]

I would like to know how is calculated the "Prio.Nbr" of one interface ? In other words, i would like to know which physical or virtual interface is "behind" Port 68 (GigabitEthernet2/4) or Port 641 (Port-channel1).

I already readed that the "port xxx" or "Prio.nbr" is calculate according to the slot and the number but I can not find the "logical or math formula".

Someone can help me ?

Thank a lot in advance... I already spent so many hours to search this formula !!!

Nico.

[sbilgi]

Check if you can find some information in the RFC:

http://www.ietf.org/rfc/rfc1493.txt?number=1493

[delahais]

Thanks a lot for you reply but i could not find any right information.