The 3Com 3CR17161-91 is a 24-port Layer 2 managed Ethernet switch designed for enterprise networking environments. This device provides 24 RJ-45 10/100BASE-TX auto-negotiating ports with full/half-duplex operation support. The switch features a switching capacity of 8.8 Gbps with a forwarding rate of 6.55 Mpps, ensuring efficient data transmission across network segments. It includes built-in Quality of Service (QoS) capabilities with IEEE 802.1p priority queuing and DiffServ support for traffic classification and prioritization. The unit supports IEEE 802.1Q VLAN tagging with up to 256 VLANs, port-based and protocol-based VLAN configurations, and GVRP for dynamic VLAN registration. Security features include IEEE 802.1X port-based authentication, MAC address filtering, RADIUS/TACACS+ support, and port security with configurable MAC address limits. The switch supports link aggregation (IEEE 802.3ad LACP) with up to 8 groups for increased bandwidth and redundancy. Management capabilities include web-based GUI, CLI via console port, SNMP v1/v2c/v3, and RMON monitoring groups 1, 2, 3, and 9. The device features auto-MDIX on all ports, flow control (IEEE 802.3x), broadcast/multicast storm control, and jumbo frame support up to 9K bytes. Power consumption is typically 30W with AC input 100-240V, 50/60Hz. The 1U rack-mountable chassis includes LED indicators for power, status, and per-port link/activity. Operating temperature range is 0°C to 50°C with humidity tolerance of 10% to 90% non-condensing.