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3COM 3CR17761-91 Switch 4500G 24-Port

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Condition: Refurbished
Packaging: Single Box
UPC: 6.62706E+11

Availability: Only 0 left



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3COM 3CR17761-91 Switch 4500G 24-Port


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  • Advanced access and distribution for medium businesses and small enterprises seeking to build a secure converged network
  • 24 auto-negotiating 10BASE-T/100BASE-TX/1000BASE-T ports, 4 of which are dual-personality 10/100/1000 or SFP Gigabit ports
  • Wirespeed non-blocking performance: aggregate switching capacity of up to 128 Gbps
  • Layer 2 switching; dynamic Layer 3 routing increases performance and enhances network security
  • Use clustered stacking for up to 32 devices (Switch 4200G, 4500G 5500 and 5500G switches)
  • Add switches to the cluster when needed - without increasing management difficulty and expense - and manage all as a single entity
  • IEEE 802.1X network access control offers standards-based security combined with RADIUS authentication; TACACS+ also supported
  • RADIUS Authenticated Device Access (RADA) provides authentication of attached devices via MAC address for an additional level of endpoint security
  • Automatic assignment of VoIP traffic to dedicated VLANs helps ensure that critical time-sensitive traffic gets the priority needed for quality communications
  • Up to four 10-Gigabit ports per switch using two rear slots and dual-port 10-Gigabit modules; economical CX4 for short-distance stack connections, or XFP for longer 10-Gigabit distances


Ports:24 auto-negotiating 10BASE-T/100BASE-TX/1000BASE-T ports, 4 of which are dual-personality 10/100/1000 or SFP Gigabit ports
2 rear slots for dual-port 10-Gigabit modules, XFP-based or CX4 local connection
Performance: 128.0 Gbps switching capacity, with 95.2 Mpps forwarding rate (maximum)
Layer 2 switching: Full-rate nonblocking on all ports, full-/half-duplex autonegotiation, flow control, multicast filtering, IEEE 802.1Q VLAN support, IEEE 802.1p traffic prioritization, IEEE 802.3ad Link Aggregation Control Protocol, IGMP snooping; more
Layer 3 switching:Hardware-based, dynamic routing; more
Security: IEEE 802.1X network login, local and RADIUS server authentication, automatic VLAN assignment via RADIUS server, Access Control Lists (ACLs); more
3Com management: 3Com Network Supervisor, 3Com Network Director, 3Com Enterprise Management Suite
Other management: CLI via console or Telnet, embedded web management interface, SNMP management
Physical Dimensions:Height: 4.36 cm (1.7 in)
Width: 44 cm (17.3 in)
Depth: 30.0 cm (11.8 in)