The ECS5520 series consists of two switches with sixteen 10GbE SFP+ ports or 10GBASE-T ports and two 40GbE uplink ports. The switches are designed for carrier/enterprise aggregation or small data center top-of-rack. The ECS5520 series is an ideal solution for traditional three-tier aggregation or core topologies and folded-Clos architectures, serving with a 2:1 oversubscription. The ECS5520 switches are packed with features that bring high availability, comprehensive security, robust multicast control, and advance QoS to network aggregation, while maintaining simple management. The switch also supports the most advance IPv6 management, IPv6 security, and IPv6 multicast control in accordance with the growth of IPv6 deployment. ISPs can expand their services from home to business users by providing a more reliable and resilient network (ITU-T G.8032 ERPS), L2 VPNs, and advanced OAM (Operations, Administration, and Maintenance) functions to ensure service-level agreements.