3Com 4500 - Page 5

5
3COM 4500 10/100 FAMILY
All information in this section is relevant to all members of the
3Com Switch 4500 10/100 family, unless otherwise stated.
CONNECTORS
26-port non-PWR
26 total available ports, comprised of:
• 24 auto-negotiating 10BASE-T/100BASE-TX ports configured as
auto MDI/MDIX
• 2 dual-personality Gigabit port pairs, configurable as 10BASE-T/
100BASE-TX/1000BASE-T or SFP
26-port PWR
26 total available ports, comprised of:
• 24 auto-negotiating 10BASE-T/100BASE-TX ports configured as
auto MDI/MDIX; IEEE 802.3af in-line power
• 2 dual-personality Gigabit SFP port pairs
Unit ships with two 1000BASE-T SFPs
50-port models
50 total available ports, comprised of:
• 48 auto-negotiating 10BASE-T/100BASE-TX ports configured as
auto MDI/MDIX; IEEE 802.3af in-line power for PWR model
• 2 dual-personality Gigabit SFP port pairs
Units ship with two 1000BASE-T SFPs
PERFORMANCE
26-port
8.8 Gbps switching capacity, max.
6.5 Mpps forwarding rate, max.
50-port
13.6 Gbps switching capacity, max.
10.1 Mpps forwarding rate, max.
All models
Switch fabric bandwidth: 32 Gbps
Wirespeed performance across all ports within stack or fabric
Store-and-forward switching; latency <10 s
2 Gbps full-duplex stacking bandwidth
LAYER 2 SWITCHING
8,192 MAC addresses in address table
64 static MAC addresses, in addition to default address
256 Port-based VLANs (IEEE 802.1Q)
IEEE 802.3ad Link Aggregation Control Protocol (LACP); automated and
manual aggregation
Jumbo Frame Support
GARP VLAN Registration Protocol (GVRP)
Per-switch trunk groups: 13 groups (26-port); 25 groups (50-port)
8 10/100 or 2 Gigabit ports per group
Auto-negotiation of port speed and duplex
IEEE 802.3x full-duplex flow control
Back pressure flow control for half-duplex
Supports broadcast storm suppression per VLAN
IEEE 802.1D Spanning Tree Protocol (STP)
IEEE 802.1s Multiple Spanning Tree Protocol (MSTP)
IEEE 802.1w Rapid Spanning Tree Protocol (RSTP)
Bridge Protocol Data Unit (BPDU) protection
Internet Group Management Protocol (IGMP) snooping (v1, 2 and 3)
on Layer 2 interfaces
Filtering for 128 multicast groups
Spanning Tree enable / disable per port
Spanning Tree fast-start mode
Bridge Protocol Data Unit (BPDU) protection
DHCP snooping
SPECIFICATIONS
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SMALLTOMEDIUM LAN CONFIGURATION SUPPORTED BY THE
SWITCH 4500