Black Box 410T User Manual
© 1999. All rights reserved.
Black Box Corporation.
BL ACK
BOX
®
The World’s Source for Cabling and Network Connectivity
SM
Black Box Corporation • 1000 Park Drive • Lawrence, PA 15055-1018 • Tech Support: 724-746-5500 • www.blackbox.com • e-mail: info@blackbox.com
Each port matches
speed, duplex, and
flow control for 10and 100-Mbps devices.
Affordably delivers
switched performance
to every desktop.
Quick setup with
easy manual or
auto-configuration.
Only 1U high!
Perfect for tight
spaces.
Delivers performance
even during high
traffic bursts.
Low price per port.
connection. That means your
users can access the switch
at100 Mbps without disrupting
other network users. The switch
is particularly helpful if you use
demanding applications like
CADor multimedia programs.
Compatibility isn't a problem,
either. The 410T works in any
Ethernet/Fast Ethernet network
configuration.
Available in 16- and 24-port
versions, the 410T features 10/100
auto-negotiating ports that match
speed, duplex, and flow control of
all connected devices.
For devices that can‘t autonegotiate, the switch lets you
manage from a single source by
manually configuring each switch
port for speed, duplex, and flow
control. Why bother with having
to reconfigure each legacy device
that’s connected to your network?
In addition to auto-negotiating
ports, the 410T features auto-
T
he Intel®Express 410T
Standalone Switch lets you
migrate your workgroups from
shared to switched networks
andeconomically provide Fast
Ethernet performance to your
desktop users.
The switch combines high
performance with affordability,
giving you a low-cost way to
migrate from shared to switched
workgroups. It’s most ideal for
organizations looking for a simple
yet powerful switch solution that’s
within budget.
The 410T is also your choice
ifyou want to replace your hub
with a reliable switch, but you’re
more concerned with reliability
and ease of use than extensive
management features.
Specifically, the Express 410T
helps you increase network
performance by allowing your
users to connect at either 10 or
100 Mbps via a dedicated network
Key Features
INTEL EXPRESS 410T STANDALONE SWITCH
6/11/99
configuration and easy out-ofthe-box setup. Connect it, plug it
in, and quickly deliver switched
performance to each user. It’s
that easy. Rackmounting brackets
are included, too.
If you’re tight on room,
you’llappreciate the switch’s
streamlined design. It’s only 1
rack unit (1U)high, so you can
increase your port density without
taking up much office space.
Connect PCs and print
serversto the device with
straight-through cable, and use
crossover cable to connect the
switch to another switch or hub.
Ifyou don’t want to use crossover
cable to link the devices, simply
depress the crossover button
onthe 410T’s front panel. This
toggles Port 1 from MDI-X to MDI.
LEDs above each port indicate
port status, individual port speed,
and port activity.
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Fast Ethernet performance at the
desktop—in an affordable package!
Give your users dedicated performance
whether they’re at 10 or 100 Mbps.
Technically Speaking
C
ompared with traditional
routers and bridges, Ethernet
switches offer distinct
advantages in performance, ease
of use, and cost.
In particular, an Intel
®
Express
410 Standalone Switch can help
alleviate bottlenecks in your
client/server environment. A
workgroup-based switch such
asthe Express 410 takes a logical
approach to easing congestion:
Itboosts performance on a
portion of the network and divides
thelocal network so fewer users
occupy a segment.
The switch also provides each
high-performance device (such a
server or a switch uplink) with its
own dedicated segment, one that
can run at the same speed as the
other switched ports or at higher
speeds.
To further ease the flow of
traffic, the Express 410T employs
flow control, which temporarily
suspends a transfer of data from a
sending workstation until its
destination port is ready to receive
it. Flow control applied during
Ethernet traffic bursts—when
switch buffer memory is full—
helps prevent information from
being dropped and, in turn, saves
you from costly delays.
Many conventional bridges,
routers, and switches rely on
large, expensive buffers to hold
packets that can’t be transmitted.
However, if the destination
segment becomes overloaded,
incoming data can overrun the
buffer, forcing the device to drop
excess packets. And, although the
sending nodes’ NICsoftware
detects dropped packets, the
solution typically involves a very
inefficient time-out mechanism.
Flow control goes to the
source—before the segment is
flooded. When a port’s internal
buffers near capacity, flow control
enables the switch to transmit a
mock collision (also known as a
jam pattern) back to the source
node. The sending node sees the
interruption as a collision and
backs off. When the switch has
emptied its internal buffers, it
directs the sender’s NICto
retransmit the packet from its
hardware buffers.
You can enable and disable
flow control for each port on the
Express 410T. By default, flow
control is enabled. The method of
flow control depends on whether
the ports are set to full or half
duplex. For instance, if the port is
operating at full duplex, the switch
sends out an 802.3x PAUSE frame,
instead of a collision, to delay
traffic.
And, as a store-and-forward
switch, the 410T stores the
incoming frame in an internal
buffer and delays transmission
until the switch successfully
completes packet error-checking.
10
Workgroup Application:
Older 10-Mbps Hub or Switch
Connected to Port 1 Using
Straight-Through Cable
File Server Connected Using
Straight-Through Cable
100-Mbps Clients
10-Mbps Clients
10-Mbps Connections
100-Mbps Connections
Shared Printer
Stack of Express 330T Stackable Hubs (EE330TX16)
Connected to the Switch Using Crossover Cable
Intel Express 410T
Standalone Switch,16-Port
(ES410T16)
The Express 410T can serve as the backbone for a small network. Its MDI/MDI-X button allows the
switch to connect to other switches and hubs using straight-through cables (instead of crossover cables).
All ports on the switch are MDI-X, and the button is used to toggle Port 1 to MDI.
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