- 4GbE Uplink Hardware Architecture- Advanced Routing Protocol (OSPF, RIP, VRRP and DVMRP)- Backup Power System (BPS)- Multi-layer Aware (L2/L3/L4) ACL for Optimizing Traffic Prioritization- IEEE802.1p 8 Hardware Priority Queue- WFQ, WRR and SPQ Queuing Algorithms - Multi-layer Aware (L2/L3/L4) ACL for Security protection- Port Security and enhanced 802.1x Port Authentication- MAC Freeze and Intrusion Lock - VLAN Stacking (Q-in-Q)