6
3COM 4500G GIGABIT FAMILY
All information in this section is relevant to all members of the
3Com Switch 4500G, unless otherwise stated.
CONNECTORS
24-port
24 auto-negotiating 10BASE-T/100BASE-TX/1000BASE-T ports,
4 of which are dual-personality 10/100/1000 or SFP Gigabit ports
48-port
48 auto-negotiating 10BASE-T/100BASE-TX/1000BASE-T ports,
4 of which are dual-personality 10/100/1000 or SFP Gigabit ports
PWR models
IEEE 802.3af in-line power on all 10/100/1000 ports
Support for redundant supplemental power supply (-48 VDC) connector
PWR units with AC power have 370W available for PoE, at maximum 15.4W
per port.
All models
2 rear slots for dual-port 10-Gigabit modules, XFP-based or CX4
local connection
RJ-45 console port
PERFORMANCE
24-port
128.0 Gbps switching capacity
95.2 Mpps forwarding rate
48-port
176.0 Gbps switching capacity
131.0 Mpps forwarding rate
All models
Wirespeed performance across ports
Store-and-forward switching; latency <10 µs
LAYER 2 SWITCHING
8,192 MAC addresses in address table
128 static MAC addresses (in addition to default address)
Jumbo Frames support
4,094 Port-based VLANs (IEEE 802.1Q)
IEEE 802.3ad Link Aggregation
Control Protocol (LACP); automated and manual aggregation
GARP VLAN Registration Protocol (GVRP)
IEEE 802.1 Q-in-Q double-tagged VLANs
MAC-based VLANs using RADA auto-VLAN assignment
IEEE 802.1ag Service Layer Operations, Administration and Maintenance
(OAM)
12 trunk groups per switch
Auto-negotiation of port speed and duplex
IEEE 802.1D Spanning Tree Protocol (STP)
IEEE 802.1w Rapid Spanning Tree Protocol (RSTP)
IEEE 802.1s Multiple Spanning Tree Protocol (MSTP)
Bridge Protocol Data Unit (BPDU) protection
Internet Group Management Protocol (IGMP v3) snooping on Layer 2
interfaces
Filtering for 128 multicast groups
IPv6-ready hardware
LAYER 3 SWITCHING
IEEE 802.3x full-duplex flow control and back pressure
Half-duplex back pressure flow control
Unidirectional Link Detection (UDLD)
Broadcast, Multicast and Unicast traffic suppression
Spanning Tree root guard
Hardware based routing
64 static routes
Dynamic routing (RIP v2); 512 routes
64 virtual IP interfaces
DHCP snooping
DHCP querier (Layer 2)
DHCP tracker
CONVERGENCE
Eight hardware queues per port
Weighted Round Robin queuing
Strict Priority queuing
IEEE 802.1p Class of Service/Quality of Service (CoS/QoS) on egress
Ingress and egress rate limiting
Port-based traffic shaping
Application and protocol blocking
Auto VLAN assignment for voice traffic determined by vendor OUI
DiffServ Code Point (DSCP) priority/expedited remarking of packets
Wake-on-LAN support
IEEE 802.3af Power over Ethernet standards-compliant (PWR models)
SECURITY
IEEE 802.1X network login:
• EAP over LAN (EAPoL) transport with EAP-MD5, PAP,
CHAP, PEAP, and EAP-TLS authentication
• Multiple users per port
• 1024 max online users
network login
Local and RADIUS server authentication
RADIUS session accounting
Automatic VLAN assignment via RADIUS server
Wirespeed packet filtering in hardware
ACLs filter at Layers 2, 3 and 4:
• Source/destination MAC address
• Ethernet type
• Source/destination IP address
• Source/destination TCP port
• Source/destination UDP port
RADIUS Authenticated Device Access (RADA): authenticate devices based
on MAC address against RADIUS server, and assign VLAN
ID and ACL
Port-based MAC address Disconnect Unknown Device (DUD)
IEEE 802.1X user authentication of switch management on switch Telnet
and console sessions; four access privilege levels
Hierarchical management and password protection for
management interface
SNMP v3 encryption
SSH v2 secure CLI access
Secure FTP
SSL/HTTPS secure web access
Denial of Service protection
Guest VLAN option
Multiple authentication server realm definitions
Centralized MAC address authentication
AAA authentication
RADIUS/ session accounting
Combined MAC and IEEE 802.1X authentication on same port
Black-hole MAC addresses
DHCP Tracker
DHCP snooping, including DHCP Trust
Wirespeed packet filtering in hardware
ARP inspection and IP source guard
ARP spoofing prevention
Trusted management station IP and/or MAC address
Encoded Archival Description (EAD)
CLUSTERED STACKING
Single IP address and management interfaces for centralized control
Compatibility with 4210, 4200G, 4500, 4800G, 5500, 5500G clustering
Up to 255 devices per cluster
MANAGEMENT
CLI via console or Telnet
3Com Operating System / Comware V5
Embedded web management interface
System configuration with SNMP v1, 2c and 3
Comprehensive statistics, including ACL/QoS and IP interface
SPECIFICATIONS