Hey, sorry for the late answer. Upgrading the firmware and adding an IP to the default VLAN interface solve the problem. Thanks
Hello everyone,   I have a issue with my new network. I'm actually running 2 S4128F as core switch and 4 stacked S3128P as access switch. I configured a vlt domain between the S4128F and then a LACP between both S4128F to the four stacked access switches (S3128P). I have multiple problems with that : - If i plug a device on the first S4128F (SW01) then I try to ping it from the Managment interface, I have some lost packets - I have a lot of "VLT peer heartbeat link is down" then few sec later "VLT peer heartbeat link is up"   you can find attached how everything is cabled and all the configuration I'm stuck since 2 days now with that issue. If someone can help me, it will be very kind. SW01 SW02 SW06 [IMAGE]   Thanks
vlt S4128F (core) to LACP S3128P stack