Contents 5Power over Ethernet (PoE) Plus Features . . . . . . . . 70Power Over Ethernet (PoE) PlusConfiguration . . . . . . . . . . . . . . . . . . . . 70PoE Plus Support . . . . . . . . . . . . . . . . . . 70Switching Features . . . . . . . . . . . . . . . . . . . 71Flow Control Support (IEEE 802.3x) . . . . . . . . . 71Head of Line Blocking Prevention . . . . . . . . . 71Alternate Store and Forward (ASF). . . . . . . . . 71Jumbo Frames Support . . . . . . . . . . . . . . . 71Auto-MDI/MDIX Support . . . . . . . . . . . . . . 72VLAN-Aware MAC-based Switching. . . . . . . . 72Back Pressure Support . . . . . . . . . . . . . . . 72Auto Negotiation . . . . . . . . . . . . . . . . . . 72Broadcast Storm Control . . . . . . . . . . . . . . 73Port Mirroring. . . . . . . . . . . . . . . . . . . . 73Static and Dynamic MAC Address Tables . . . . . 73Link Layer Discovery Protocol (LLDP) . . . . . . . 74Link Layer Discovery Protocol (LLDP) forMedia Endpoint Devices . . . . . . . . . . . . . . 74Connectivity Fault Management(IEEE 802.1ag) . . . . . . . . . . . . . . . . . . . . 74Priority-based Flow Control (PFC) . . . . . . . . . 74Data Center Bridging Exchange (DBCx)Protocol . . . . . . . . . . . . . . . . . . . . . . . 75Enhanced Transmission Selection . . . . . . . . . 75Cisco Protocol Filtering . . . . . . . . . . . . . . . 76DHCP Layer 2 Relay. . . . . . . . . . . . . . . . . 76Virtual Local Area Network Supported Features . . . . 77VLAN Support. . . . . . . . . . . . . . . . . . . . 77Port-Based VLANs . . . . . . . . . . . . . . . . . 77IP Subnet-based VLAN . . . . . . . . . . . . . . . 77MAC-based VLAN . . . . . . . . . . . . . . . . . 77IEEE 802.1v Protocol-Based VLANs . . . . . . . . 77