4
Install the Hub on a Flat Surface
If installing the hub on a flat surface such as a tabletop, make sure the
bottom of the chassis is clean and dry and allow at least 2 inches of
space on all sides of the hub to ensure proper ventilation.
1.
Install the self-adhesive footpads on the bottom of the hub.
2.
Set the hub on a table or shelf so that it has at least 2 inches
(5 cm) of space on all sides.
3.
Connect the power cord(s) first to the power entry receptacle
on the hub rear panel and then to the wall.
Install the Hub in a Rack
To install the hub in a rack, make sure you have #2 and #3 Phillips
screwdrivers. Refer to the illustration and follow the steps.
1.
Attach the mounting brackets (supplied in the rack mount kit)
to the sides of the hub using the screws provided.
2.
Attach the hub (with the mounting brackets) to the rack using
two panhead screws with nylon washers.
Cascade up to Eight Hubs to Build a Larger Network
As many as eight Model DS508 or Model DS516 hubs can be cascaded
for up to a maximum of 128 ports in a single repeater (or collision)
domain. Any device connected to one of the 128 ports at either 10 or
100 Mbps can connect through the network to any other device
attached to the cascade stack. The stack of eight hubs can consist of
any combination of Model DS508 and Model DS516 hubs daisy-
chained together using the supplied cascade cable. The LEDs in the
following illustration appear as they would in an operational stack of
Model DS508 and Model DS516 hubs.
The cascade connectors on the Model DS508 and Model DS516 hubs
use a shared circuit. When power is supplied to one of the hubs in a
stack, the Terminator LED in the top hub of the stack and the
Terminator LED and 10/100 Mbps Bridge LED in the bottom hub of
the stack will be on. If power is disconnected from the bottom hub in
the stack, the hub above it takes over the bridge function. Furthermore,
the remaining hubs continue to operate if power is disconnected from
one hub in the stack.
Set Normal/Uplink Push Button
The Normal/Uplink push button on the front panel of the hub allows
you to select the Uplink (MDI) or Normal (MDI-X) position for port 8
on the Model DS508 hub and for port 16 on the Model DS516 hub. All
other ports are wired Normal for direct connection to PCs.
Select Normal if connecting a PC or server to the port. Select Uplink if
connecting a router or switch. The Normal/Uplink push button
eliminates the need to use a crossover cable.
When installation is complete and power has been applied to the hub,
the following conditions should exist:
•
Power LED is on.
•
Link LED on each connected port is on.
•
Utilization LEDs on the front panel are blinking when data is
being received by any port in the hub, and the Link/Receive LED
on the connected port is blinking when data is being received by
that port.
•
With a single hub, the Terminator and Bridge LEDs in the rear
panel are on.
•
With a stack of hubs, the Terminator LEDs in the top and bottom
hubs are on. The Bridge LED in the bottom hub is on.
If there are any problems, refer to the Troubleshooting table.
Installation Procedures
Install the Hub
8145FA
Normal/Uplink
24
12
Link
RX
Link
RX
17
5
Link
RX
13
1
Power
Data
Collision
#3 Phillips screwdriver
(use large screws with spacers)
#2 Phillips screwdriver
(use small screws)
Cascade to Build a Large Network
100-240 VAC 50-60 Hz 0.5A
Terminator
Cascade Down
Cascade Up
10/100 Mbps
Bridge
100-240 VAC 50-60 Hz 0.5A
Terminator
Cascade Down
Cascade Up
10/100 Mbps
Bridge
100-240 VAC 50-60 Hz 0.5A
Terminator
Cascade Down
Cascade Up
10/100 Mbps
Bridge
8099FA
100-240 VAC 50-60 Hz 0.5A
Terminator
Cascade Down
Cascade Up
10/100 Mbps
Bridge
Terminator LED On
Terminator LED On
Bridge LED On
Caution:
100 Mbps operation requires the use of Category 5
UTP wiring with 100 Mbps certified connectors. NETGEAR
highly recommends using Category 5 cable so your network
can operate at either 10 or 100 Mbps.
Connect a PC to the Hub
8094FA
Normal/Uplink
24
12
Link
RX
Link
RX
17
5
Power
Data
Collision
Power
Data
Collision
Verify Your Installation
DS508.fm Page 4 Friday, January 30, 1998 3:46 PM