3COM JE105A HP Switch 100Mbit, 24xTP, 4xSFP slot, POE, E5500-24-PoE,

Ports: 24 10BASE-T/100BASE-TX ports with inline power negotiation, configured as auto MDI / MDIX, 4 Gigabit SFP ports, RPS port (-48 VDC), RJ-45 console port Performance: 12.8 Gbit / s transmission bandwidth, 9.5 million packets per second, 16,000 MAC addresses, max. Stacking: Up to 8 switch units, 384 10/100 ports, 3Com XRN ® Stacking in active / active load-sharing configuration via SFP ports on the front connected Layer 2: IEEE 802.Q VLANs, 802.3ad LACP, 802.3x full-duplex flow control, 802.1D STP, 802.1w RSTP, Fast Start with BPDU protection, IGMP v1/v2 multicast filtering Layer 3: Hardware-based routing, ECMP, ARP, virtual interfaces, static / dynamic routing, RIPv1/v2, OSPF , ASIC Layer 3 forwarding, PIM-DM, PIM-SM, IGMP v1/v2 snooping, DHCP Relay Reliability: IEEE 802.3ad LACP, hot-swappable switch units, DC RPS provides N +1 power redundancy, seamless failover between the AC and DC modes Convergence: Weighted Round Robin / Fair / Strict Priority Queuing, IEEE 802.1p Class of Service / Quality of Service (CoS / QoS), IPv6 classification, prioritization and filtering, ingress / egress rate limiting , webcache-based bandwidth management Security: RADIUS, PAP / CHAP / EAPOL (EAP over LAN) authentication, session accounting, SSHv1.5, access control lists, packet filtering, SNMP v3 encryption, IEEE 802.1X network access control, authentication, VLAN car and QoS profiling, multilevel access privileges to restore the administrative password management activity logs Power over Ethernet: IEEE 802.3af standard operating system: 3Com Operating System, shared with 3Com Switch 8800, 7700 and Router 6000 3Com management: 3Com Network Supervisor, 3Com Network Director, 3Com Enterprise Management Suite Other management: Web-based GUI, SNMP, Telnet, CLI, RMON-1 (statistics, history, alarms, events), SMON, multiple software images, bank swap statistics gathering and reporting, remote polling / ping (unicast mode only) software backup / restore, Xmodem, FTP, TFTP, telnet, IP address allocation via manual / DHCP / BOOTP Network debugging tools: DHCP tracker, UDP helper, traceroute, 1-1 traffic mirroring (only single unit) Integrated power supply: 50 / AC 60 Hz, 90-240 VAC input, supports multiple power modes: AC-only, AC and DC mode, only DC-powered DC Redundant Power System (RPS): Available standards-based DC RPS by Eaton Powerware Corporation, the leading provider of integrated power systems available IEEE standards: IEEE 802.1D (STP), 802.1p (CoS), 802.1Q (VLANs), 802.1w (RSTP), 802.1X (Security), 802.3 (Ethernet), 802.3ad (Link Aggregation ), 802.3ab (1000BASE-T), 802.3ae (10G Ethernet), 802.3i (10BASE-T), 802.3u (Fast Ethernet), 802.3x (Flow Control), 802.3z (Gigabit Ethernet) standard: EN 60068 ( IEC 68) Emissions: CISPR 22 Class A, FCC Part 15 Class A, EN 55022 1998 Class A, ICES-003 Class A, VCCI Class A, EN 61000-3-2 2000, 61000-3-3 Immunity: EN 55024 certifications of Safety Agency :: UL 60950, IEC 60950-1, EN 60950-1, CAN/CSA-C22.2 No.. 60950 Reliability: MTBF 30 years (263,000 hours) Dimensions: Height: 43.6 mm (1U) Width: 440 mm Depth: 427 mm (1U) Weight: 6.3 kg Temperature: 0 ° C to 40 ° C for operating, -10 ° C to 70 ° C Storage Humidity: 10% to 95% non-condensing, operating / storage