The Zy XEL XGS3600 series is Telco-class layer 2 carrier Ethernet switches ideal for Ethernet service aggregation & extension. The series is an excellent solution that provides an ideal combination of affordability with capabilities for carrier access networking. The Zy XEL XGS3600 series L2 Gb E switches offer wire-speed flow control that classifies & prioritizes the incoming packets according to the predefine Qo S policies that meet requirements of service providers. In terms of classification, the Differentiated Services Code Point (DSCP) field & the 802.1p Class of Service (Co S) field is identified to assess the priority of incoming packets. Classification & reclassification can be based on criteria as specific as rules based on IP, MAC addresses, VLAN ID or TCP/ UDP port number. For bandwidth management, the XGS3600 series provides 8 priority queues per port for different types of traffics, allowing service providers to set policy-based rate limitations that take full advantage of constrained network resources & guarantee the best performance.