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3com 3CR17561-91 10/100Mbps + 1000Mbps Switch 4500 26-Port 24 x 10BASE-T/100BASE-TX ports 2 x dual-personality Gigabit port pairs 8,000 MAC addresses MAC Address Table

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  • 24 x 10BASE-T/100BASE-TX ports
  • 2 x dual-personality Gigabit port pairs
  • 8,000 MAC addresses MAC Address Table
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Learn more about the 3Com 3CR17561-91

Model
Brand 3com
Model 3CR17561-91
Format & Standards
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)
Ports & Interface
Primary Ports 24 x 10BASE-T/100BASE-TX ports
2 x dual-personality Gigabit port pairs
Primary Port Speed 10/100Mbps + 1000Mbps
Data Transmission
MAC Address Table 8,000 MAC addresses
VLAN Support Yes
Details
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
Power AC Line Frequency: 50/60 Hz, Input Voltage: 90-240 VAC, Current Rating: 1.0A maximum
Features
Features Performance: 8.8 Gbps forwarding bandwidth, 6.5 million packets per second
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
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
Dimensions & Weight
Dimensions 17.3" x 10.6" x 1.7"
Weight 7.3 lbs.
Additional Information
First Listed on Newegg July 26, 2007

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