1.4 Product Features 
  Physical Port 
  NS3502-8P-2S     
  8-Port 10/100/1000Base-T Gigabit Ethernet RJ-45 with IEEE 802.3af / 802.3at PoE Injector 
  2 100/1000Base-X SFP slots 
  RS-232 DB9 console interface for Switch basic management and setup 
 
  Layer 2 Features 
■ Prevents packet loss with back pressure (Half-Duplex) and IEEE 802.3x PAUSE frame flow 
control (Full-Duplex) 
■ High performance of Store-and-Forward architecture and runt/CRC filtering eliminates 
erroneous packets to optimize the network bandwidth 
■ Storm Control support: 
− Broadcast / Multicast / Unknown-Unicast 
■ Support VLAN 
− IEEE 802.1Q Tagged VLAN 
− Up to 255 VLANs groups, out of 4094 VLAN IDs 
− Provider Bridging (VLAN Q-in-Q) support (IEEE 802.1ad)   
− Private VLAN Edge (PVE) 
− Protocol-based VLAN 
− MAC-based VLAN 
− Voice VLAN 
■ Support Spanning Tree Protocol 
− STP, IEEE 802.1D Spanning Tree Protocol 
− RSTP, IEEE 802.1w Rapid Spanning Tree Protocol 
− MSTP, IEEE 802.1s Multiple Spanning Tree Protocol, spanning tree by VLAN 
− BPDU Guard 
■ Support Link Aggregation 
− 802.3ad Link Aggregation Control Protocol (LACP) 
− Cisco ether-channel (Static Trunk) 
− Maximum 5 trunk groups, up to 10 ports per trunk group   
− Up to 20Gbps bandwidth(Duplex Mode) 
■ Provide Port Mirror (many-to-1) 
■ Port Mirroring to monitor the incoming or outgoing traffic on a particular port   
 
  Quality of Service 
■ Ingress Shaper and Egress Rate Limit per port bandwidth control 
■ 8 priority queues on all switch ports 
■ Traffic classification: 
-  IEEE 802.1p CoS