... back panel are hot-swappable.Support flexible controllable multi-cast, Proxy, Snooping and etc.Support strong VLAN extension functions, including VLAN ... , etc.RSTPSupport STP, RSTPIGMPSupport IGMPv1/v2 protocol, support IGMP Snooping/Proxy, support controllable multicastQoS and Support flow classification, mark, queue and ...