3Com Switches - Manual (Page 18)

18
8 x 1000BASE-SX ports
Front view
SuperStack II Switch 9000
SuperStack II Switch 9000
(Layer 3 switch)
SuperStack II Switch 3800
(Layer 3 Switch)
Floor 2
Basement
Floor 1
Floor 3
Subnet 1
Subnet 2
Subnet 3
Subnet 4
Subnet 5
Subnet 6
WAN
Subnet 7
Subnet 8
PCs
SuperStack
® II Switch 1100 with
Gigabit Ethernet module
Dedicated 10 Mbps
to power user
Dedicated 10 Mbps
and 100 Mbps
Ethernet
100 Mbps
Gigabit
Ethernet
1000
Mbps
1000
Mbps
100 Mbps power users
SuperStack II Switch 3800 (Layer 3 switch)
SuperStack II Switch 3300
with Gigabit Ethernet module
and SuperStack II Switch 3900
Legacy router
Gigabit Ethernet (1000
Mbps) server farm
100 Mbps
1000 Mbps
10 Mbps
Transcend
® network
management console
For dramatic performance boost in corpo-
rate routed networks, the SuperStack II
Switch 9000 delivers wire-speed IProuting
embedded in ASIC technology in addition to
Gigabit Ethernet switching.
It offloads the routing of intranet traffic from
slow legacy routers while keeping under
control broadcast/multicast traffic and fault
propagation in appropriate subnetworks.
The SuperStack II Switch 9000 offers
affordable leading-edge Layer 3
switching technology for 10 times the
performance of intranets. Wire-speed
Layer 3 switching (IP routing) and
Layer 2 switching are embedded in
ASICs to forward at nonblocking speed
any-to-any intranet traffic while broad-
cast/multicast traffic and fault
propagation are kept under control in
appropriate subnetworks.
The SuperStack II Switch 9000 not
only aggregates at Gigabit speed the
traffic from Ethernet and Fast Ethernet
workgroups, but it removes router
bottlenecks that occur in corporate
networks when high-speed, any-to-any
intranet traffic chokes software-based
legacy routers.
Key features include:
■ Full line-rate nonblocking routing
performance on all ports (over
11.9 million IP packets per second
and 17.7 Gbps throughput)
■ Support for standards-based routing
protocols: RIP/RIP v2
■ Eight 1000BASE-SX Gigabit ports
■ Support for up to 12,000 MAC
addresses for handling networks of
virtually any size
■ Elastic port buffering to enable on-
the-fly allocation of memory for
automatic performance optimization
based on network traffic
SuperStack II Switch 9000
Gigabit Ethernet Layer 3 Switching
■ IEEE 802.3x flow control on all full-
duplex ports to improve performance
and minimize packet losses
■ Full VLAN implementation:
– Port and tagged VLANs (802.1Q)
– Protocol-based VLANs to allocate
bandwidth and enforce manage-
ment policies among different
protocols (e.g., IP, IPX, NetBIOS,
DECnet)
■ User-definable packet filters to control
traffic flows
■ Support for spanning tree per VLAN
■ Class of Service embedded in ASIC
PACE technology, 802.1D
(incorporating 802.1p)
■ RMON support for four groups
■ Simplicity and scalability of
10/100/1000 Ethernet in the
industry-leading SuperStack II
system architecture