3Com 5500-EI 28-Port Stackable Switch**BARGAIN** BrAnD NEW, R12 500 Value

Premium Stackable Fast Ethernet Switching for Advanced Edge Applications The 3Com Switch 5500-EI 28-Port is a premium stackable 10/100 switch with Enhanced Image (EI) software for businesses running the most demanding network applications requiring the highest "five 9s": network uptime.

24-ports operate at 10/100 while 4 additional SFP-based ports operate at Gigabit speeds.

The Switch 5500-EI supports distributed, resilient 3Com XRN Stacking Technology and advanced Layer 3 (RIP / OSPF) routing, Layer 2-4 QoS, and rate limiting features.

This switch provides extensive security features-SNMP v3, SSH, network login-and resilient hot-swap stacking for simplified management and monitoring.

All 3Com Switch 5500 products share the same operating system as our premium modular switches and routers, including the 3Com Switch 8800 and 7700. This permits you to manage an entire distributed switching and routing infrastructure from a single CLI or SNMP management platform such as 3Com Enterprise Management Suite or 3Com Network Director.

• 24 10/100 ports, with 4 SFP slots.
• Scalable stackable design with resilient stacking up to eight units high, or 384 Fast Ethernet ports using 2 Gbps stacking bandwidth (4 Gbps full duplex).
• 12.8 Gbps switching capacity, 9.5 Mpps forwarding rate, maximum.
• Wirespeed performance across all ports within a stack delivers optimal throughputs and bandwidth for business-critical data and high-speed communications.
• Multi-layer operation with static routes, RIP-based Layer 3 functionality, OSPF, and PIM-DM and PIM-SM.
• 3Com XRN Stacking Technology provides for the creation of eight-unit stacks that offer chassis-like availability and resiliency over traditional aggregated-trunk configurations. The entire stack is managed as a single-IP management entity, with "masterless" sharing of critical routing information across all units for fast failure recovery.
• Load-sharing and cross-stack trunking features help eliminate dropped packets, clear up traffic bottlenecks, and improve server availability.
• Integrated distributed security enforcement.
• Advanced, time-based Access Control Lists (ACLs) help safeguard key network resources from unauthorized access and data corruption.
• User-based authentication and DES 56-bit or 168-bit encryption help secure Layer 3 protocols and management controls.
• Shared 3Com Operating System consolidates administrative control over the entire switching infrastructure-contributing to a more unified network environment and providing unparalleled edge-to-core visibility and control.
• Built-in support for AC- and DC-powered operations enables you to leverage existing power schemes and cost-effectively extend power to the edge of the network.
• Available DC Redundant Power Supply (RPS), designed by Eaton Powerware Corporation, a leading provider of integrated power systems.

Product Specifications

• Ports: 24 autonegotiating 10BASE-T/100BASE-TX ports configured as auto MDI/MDIX; 4 SFP Gigabit ports; RPS power port (-48 VDC); RJ-45 console port
• Performance: 12.8 Gbps forwarding bandwidth, 9.5 million packets per second, 16,000 MAC addresses, maximum
• Stacking: Up to 8 switch units, 384 10/100 ports; 3Com XRN Stacking linked in active/active load-sharing configuration via front panel SFP ports
• Layer 2: IEEE 802.Q VLANs, 802.3ad LACP, 802.3x full-duplex flow control, 802.1D STP, 802.1w RSTP, Fast Start with BDPU 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 Resiliency: IEEE 802.3ad LACP, hot-swappable switch units, DC RPS provides N+1 power redundancy, seamless failover between 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 Login; authentication, VLAN autoinitiation and QoS profiling; multilevel access privileges; administrative password recovery; management activity logs
• 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 (standalone unit only) Built-In power supply: 50/60 Hz AC; 90-240 VAC input; 1.0 A maximum; supports multiple power modes: AC-only, AC and DC, DC-only
• DC Redundant Power Supply (RPS): Available standards-based DC RPS designed by Eaton Powerware Corporation, leading provider of integrated power systems
• 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), 802.3i (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
• Safety agency certifications: UL 60950, IEC 60950-1, EN 60950-1, CAN/CSA-C22.2 No. 60950
• Reliability: MTBF 53 years (464,000 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)

All brackets, cables etc , complete in the box.