The Access Control List (ACL) support, Class of Service (CoS), Flexible NetFlow (FNF), High Availability, IGMP snooping, IPv6 support, Intrusion Prevention System (IPS), Link Fragmentation and Interleaving (LFI), Low-latency queuing (LLQ), MAC address filtering, NAT support, Quality of Service (QoS), Class-Based Weighted Fair Queuing (CBWFQ), Spanning Tree Protocol (STP) support, Storm Control, Virtual Route Forwarding-Lite (VRF-Lite), Weighted Fair Queuing (WFQ), Weighted Random Early Detection (WRED), auto-uplink (auto MDI/MDI-X), dynamic DNS server, fanless, firewall protection, power over Ethernet (PoE), DHCP client, security lock slot (cable lock sold separately), traffic shaping, DHCP relay, DHCP server, DNS proxy, DiffServ Code Point (DSCP) support, DiffServ support, Dynamic Multipoint VPN (DMVPN)