3Com Switch 4500 Family Lembar data - Halaman 6
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Halaman Cetak
6
SPECIFICATIONS
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
24 auto-negotiating 10BASE-T/
100BASE-TX ports configured as auto
MDI/MDIX
2 dual-personality Gigabit port pairs,
configurable as 1000BASE-T or SFP
26-port PWR
24 auto-negotiating 10BASE-T/
100BASE-TX ports configured as auto
MDI/MDIX; IEEE 802.3af in-line power
2 dual-personality Gigabit SFP pairs;
unit ships with two 1000BASE-T SFPs
50-port models
48 auto-negotiating 10BASE-T/
100BASE-TX ports configured as auto
MDI/MDIX; IEEE 802.3af in-line
power for PWR models
2 dual-personality Gigabit SFP pairs;
units ship with two 1000BASE-T SFPs
PERFORMANCE
26-port
8.8 Gbps switching capacity,
maximum
6.5 Mpps forwarding rate, maximum
50-port
13.6 Gbps switching capacity,
maximum
10.1 Mpps forwarding rate, maximum
All models
Wirespeed performance across all
ports within stack or fabric
Store-and-forward switching; latency
<10 µs
2 Gbps full-duplex stacking bandwidth
LAYER 2 SWITCHING
addresses in address table
8,000 MAC
12 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
Per-switch trunk groups: 13 groups
(26-port); 25 groups (50-port)
8 10/100 ports 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 802.1w Rapid Spanning Tree
Protocol (RSTP)
Bridge Protocol Data Unit (BPDU)
protection
Internet Group Management Protocol
(IGMP) snooping on Layer 2 interfaces
Filtering for 128 multicast g
roups
3Com
Switch 4500 10/100 Family
®
LAYER 3 SWITCHING
Hardware
based routing
12 static routes, in addition to default
address
1,990 dynamic Address Resolution
Protocol (ARP) entries; 10 static
4 IP interfaces
Routing Information Protocol (RIP), v1
and v2; supports 2,000 entries
Dynamic Host Configuration Protocol
Relay (DH
CP Relay)
CONVERGENCE
dware queues per port
Eight har
Weighted Round Robin (WRR)
IEEE 802.1p Class of Service/Quality
of Service (CoS/QoS) on egress
Auto prioritization of voice traffic
determined by vendor OUI
DiffServ Code Point Expedited
Forwarding (DSCP EF) remarking for
prioritization of VoIP traffic
Traffic shaping with port-based egress
rate limiting; application and protocol
blocking
IEEE 802.3af Power over Ethernet
standards-compli
ant (PWR models)
POE (PWR MODELS ONLY)
IEEE 80
2.3af PoE injection into
Category 5 or 5e LAN wiring (300 W
total maximum)
Available standards-based DC
supplemental power system supplies
up to 15.4 W each of power to all PoE
ports in a switch or s
tack (5,914 W
total maximum)
SECURITY
IEEE 802.
1X Network login user
authentication:
• EAP over LAN (EAPoL) transport
with EAP-MD5, PAP and CHAP
authentication
• Multiple users per port
• 1024 users per fabric
Local and RADIUS server authentication
RADIUS session accounting
Automatic VLAN assignment via
RADIUS server
Wirespeed packet filtering in hard-
ware
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 pass-
word protection for management
interface
SNMP v3 encryption
SSH
v2