3COM JE048A HP Switch 100Mbit, 48xTP, 1000Mbit, 2xTP/SFP-Slot, POE, E45

PWR,Layer 3, technical data Ports: 48 autonegotiating 10BASE-T/100BASE-TX ports configured as auto MDI/MDIX, 2 dual-personality Gigabit port pairs: user configurable for RJ45 (copper) or SFP-based (fiber) interfaces. Performance: 8.8 Gbps forwarding bandwidth, 6.5 million packets per second, 8,000 MAC addresses, maximum Stacking: Up to 8 switch units, 384 10/100 ports, Single IP address and management interfaces for stack-wide control Layer 2: 802.1Q Port-based VLANs: 256, 802.3ad (LACP), Manual aggregation Trunk groups: 13 groups (26-port), 8 10/100 ports or 2 Gigabit ports per group, autonegotiation of port speed and duplex, 802.3x full-duplex flow control, back pressure flow control for half-duplex, 802.1D (STP), 802.1w (RSTP), BPDU protection included in Fast Start, Internet Group Management Protocol (IGMP) v1 and v2 snooping, IGMP Querier, filtering for 128 multicast groups Layer 3: Hardware-based routing, static routes: 12 in addition to the default address, dynamic / static ARP entries : 1990 / 10, IP interfaces: 4, RIP, v1 and v2: 2K via default route plus 10 locally learned routes, IGMP v1 and v2 snooping, DHCP Relay: 2 KB max Convergence: Eight hardware queues per port, 802.1p (CoS/QoS) on egress DSCP EF for prioritization of VoIP traffic, Weighted Round Robin, Egress rate limiting, port-based, Application and protocol blocking Power over Ethernet: include IEEE 802.3af in-line power on all 10Base-T/100Base-TX ports and support redundant power supply (-48 VDC) connector Security: 802.1X user authentication: RADIUS authentication, multiple users per port by locking to the MAC address, automatic port assignment of VLANs, multiple RADIUS server realm definitions, (RADA): authenticate devices based on MAC address against RADIUS server, authenticate multiple devices per port, automatic assignment of VLANs to a port specific to the devices attached, PAP, CHAP, EAPoL authentication, for multiple users per port and 1,024 users per fabric, port-based MAC address lockdown using DUD with continuous learning, wirespeed packet filtering in hardware, Layer 2/3/4 ACL filters: source and/or destination MAC address, 16-bit Ethertype, source and/or destination, IP address, TCP source and/or destination port, UDP source and/or destination port, MD5 cipher-text authentication and clear-text authentication for RIP v2 packets and SNMP v3 traffic, trusted MAC and IP address, concurrent sessions, four access-privilege levels, 802.1X network administrator authentication, secure management via SSH v2.0 or SNMPv3, management activity logs automatically recorded for detailed analysis, administrative password recovery 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: CLI via the console port or Telnet, embedded web management interface, system configuration with SNMP v1, 2, and 3, RMON groups: statistics, history, alarm, and events, ACL/QoS statistics, comprehensive IP interface statistics and rates, 1-to-1 port mirroring, ability to apply QoS profile to mirror port, forwarding only certain traffic types and preventing oversubscription of copy port, detailed alarm/debug information, supports ping and traceroute, backup and restore of software image, network debugging tools: DHCP Relay, UDP Helper, multiple configuration file support, Xmodem, FTP, TFTP Built-In power supply: AC Line Frequency: 50/60 Hz, Input Voltage: 90-240 VAC, Current Rating: 1.0A maximum IEEE standards: 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), 802.3i (10BASE-T), 802.3u (Fast Ethernet), 802.3x (Flow Control), 802.3z (Gigabit Ethernet) 802.3af (Power over Ethernet) 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 Safety agency certifications: UL 60950, IEC 60950-1, EN 60950-1, CAN/CSA-C22.2, No. 60950-1-03 Reliability: MTBF 47 years (411,000 hours) Dimensions: Height: 43.6 mm (1.7 in or 1U), width: 440 mm (17.3 in), depth: 270 mm (10.6 in) Weight: 3.3 kg (7.3 lb)