The zyxel xgs3600 series is telco class layer 2 carrier ethernet switches ideal for ethernet service aggregation and extension the series is an excellent solution that provides an ideal combination of affordability with capabilities for carrier access networking the zyxel xgs3600 series l2 gbe switches offer wire speed flow control that classifies and prioritizes the incoming packets according to the predefine qos policies that meet requirements of service providers in terms of classification