Giuseppe,  Thanks for your help. Do you have any configs to share in the L2 Trunks side? What I'm looking for is how 802.3ah notify MST that the link is down..Thanks in advanced.John

I am actually working in a TELCO planning the MetroEthernet and it is already deployed. We have a problem at the begining because there was two kinds of MST developed. MST Pre-Standard and MST Standard. The "big" Switches supported MST Std but the CP...