Справочник Пользователя для 3com Switches

The SuperStack II Switch 3900 and 
the SuperStack II Switch 9300 (Gigabit
Ethernet switch) constitute an industry-
leading solution for high-density 10/100
Ethernet to Gigabit Ethernet switching.

The SuperStack II Switch 3900 
delivers full line-rate performance 
(over 9.8 million pps of switching 
performance) for up to 36 10/100 Mbps
ports and from one to three 1000 Mbps
ports. Multiple Gigabit Ethernet
uplinks can be trunked together 
to deliver an uplink with 3 Gbps 
of bandwidth.

The SuperStack II Switch 3900 

is available in two versions: a 
24- and 36-port 10/100 Ethernet/
Fast Ethernet switch. Both have one
integral 1000BASE-SX port and two
Gigabit Ethernet expansion slots. The
rear-mounted expansion slots accept
optional Gigabit Ethernet modules
available for either 1000BASE-SX or
1000BASE-LX both via SC connectors.
The 1000BASE-SX option supports
multimode fiber links, while the
1000BASE-LX option supports single-
mode fiber. The 1000BASE-LX option
supports multimode fiber when used 
in conjunction with a conditioned
launch cable.

Key features include:

■

Supports up to 16,000 MAC
addresses

■

Multicast filtering using IGMP
snooping

■

Multicast throttling limits broadcasts
and multicasts on a per-port basis

■

Support for IEEE 802.3x flow
control on all full-duplex ports

■

Roving Analysis Port (RAP) for
copying data from any port to another
port with a network analyzer attached

■

RMON support for four groups 

■

Fully standards-based 802.1Q
VLANs, including GVRP support
for automatic VLAN configuration
distribution

■

IEEE 802.1D (incorporating
802.1p) Class of Service support and
dual priority queuing

SuperStack II
Switch 3900

SuperStack II
Switch 3900

SuperStack II
Switch 3900

SuperStack II
Switch 3900

Gigabit
Ethernet
uplinks

SuperStack II Switch 3900 and SuperStack II Switch 9300 10/100 Mbps 
to 1000 Mbps Gigabit Ethernet Switching

24 switched 10BASE-T/100BASE-TX RJ-45 ports

Slot for optional 
Gigabit Ethernet
modules

Advanced
Redundant
Power System
connection

Built-in
1000BASE-SX
Gigabit Ethernet
port

Console
port
(management)

AC
connection

Four SuperStack II Switch 3900s equipped
with additional Gigabit Ethernet expansion
modules can be grouped yielding a config-
uration of 144 10/100 Ethernet ports with
six Gigabit Ethernet uplinks.

• Interconnect four units with dedicated

Gigabit Ethernet links.

• Two additional Gigabit Ethernet option

slots per switch yield six additional
Gigabit Ethernet ports for uplinks or
additional bandwidth.

36 switched 10BASE-T/100BASE-TX RJ-45 ports

■

Web browser interface for manage-
ment and configuration functions

■

Full line-rate nonblocking switching
performance (6.6 Gbps throughput
and over 9.8 million pps frame
processing)

■

Support for multiple Gigabit Ethernet
uplinks

■

Support for trunking (multiple
parallel active links) on both Fast

Ethernet and Gigabit Ethernet ports
(up to six ports per trunk group and
four trunks per unit)

■

Resilient links

■

Full-duplex support on all Gigabit
and Fast Ethernet ports

■

All Fast Ethernet ports support 10/100
and full-/half-duplex operation with
autonegotiation (IEEE 802.3x)