Filter
Top Products
Quick Installation GuideCheetaHub Power-3008N/3016N
6 7
Cascading Hubs with the Daisy-Chain Port - You can easily connect to another
hub or switch via the RJ-45 MDI daisy-chain port on the front panel. The figure
below shows a sample configuration. When connecting to 10 Mbps Ethernet, the
maximum number of hubs that can be cascaded is four (with up to 100 meters or
328 feet of cable allowed between each hub). However, when connecting to another
Fast Ethernet hub, the number of hubs that can be cascaded is limited to two, and
the total network span allowed is only 205 meters (672 feet).
Stack of Hubs - You can stack up to six hubs using the stack ports on the rear
panel. A CheetaHub stack can include up to 96 RJ-45 ports. Also note that if more
than one hub with internal switching (EH3008N-SW or EH3016N-SW) is placed in
the stack, switching between stack segments will be managed by the uppermost unit
in the stack, and internal switching will be disabled for all other units.
Connecting to a Network Backbone - You can easily connect to a collapsed backbone
switch via the RJ-45 MDI daisy-chain port on the front panel. Because a switch breaks
up the collision domain, it can be used to connect a group of CheetaHub stacks.
Product Specifications
Repeater Criteria
Access Method CSMA/CD, 10 Mbps or 100 Mbps
Standards Conformance IEEE 802.3 10BASE-T, IEEE 802.3u 100BASE-TX,
IEEE 10BASE2 (EH3016N/SW)
Communication Rate 10/100 Mbps on RJ-45 ports, 10M on BNC port
Media Supported 10BASE-T - 100Ω Category 3,4,5 twisted-pair
100BASE-TX - 100Ω Category 5 twisted-pair
10BASE2 - thin Ehternet coaxial cable (EH3016N/SW)
Number of Ports 8 RJ-45 ports (EH3008N/SW)
16 RJ-45 ports (EH3016N/SW)
1 BNC port (EH3016N/SW)
1 MDI daisy-chain port (replaces 1 station port)
All models have 2 stack ports on the rear panel
Indicator Panel LEDs for monitoring power, activity, collision, port link
(10/100M), port partition, and utilization
Input Power (full range) 100 to 240V (+6% ~ -10%), 50 to 60 Hz (±3Hz)
EH3008N EH3016N
Power Consumption 15 Watts max. 27 Watts max.
Heat Dissipation 51 BTU/hr max. 92 BTU/hr max.
Maximum Current (110/240V) 0.10 / 0.05 A
RMS 0.23 / 0.11 ARMS
Dimensions 251x116x37 mm 273x166x43 mm
9.88x4.56x1.46 in 10.75x6.54x1.69 in
Weight 0.83Kg (1.83lb) 1.65Kg (3.64lb)
Temperature 0~40°C (32~104°F) Standard Operating,
-25~70°C (-13~158°F) Storage
Humidity 5% to 95% (Non-condensing)
Certification CE Mark
Emissions EH3008N: FCC Class B, VCCI Class B, CISPR Class B
EH3016N: FCC Class A, VCCI Class A, CISPR Class A
Immunity IEC 1000-4-2/3/4/6
Safety CSA/NRTL, TÜV/GS
Internal Switching Criteria
Network Bridging Function Filtering, forwarding and learning
Switching Method Store-and-forward
Address Table 4K entries
Queue Buffer 9K bytes / 10M port, 87K bytes / 100M port
Filtering/Forwarding Rate Line speed
Troubleshooting
Diagnosing Hub Indicators
The hub can be easily monitored through panel indicators to assist the network
manager in identifying problems. This section describes common problems you may
encounter and possible solutions.
Symptom: Link 10/100M indicator does not light up after making a connection.
Cause: Network interface (e.g., a network adapter card on the attached device),
network cable, or hub port is defective.
Solution: Verify that the hub and attached device are powered on. Be sure the cable is
plugged into both the hub and corresponding device. Verify that the proper
cable type is used and its length does not exceed specified limits. Check the
adapter on the attached device and cable connections for possible defects.
Replace the defective adapter or cable if necessary.
Symptom: Power indicator does not light up (green) after power on.
Cause: Defective power outlet, power cord, or internal power supply.
Solution: Check the power outlet by plugging in another device that is functioning
properly. Check the power cord with another device. If these measures fail
to resolve the problem, have the unit's power supply replaced by a qualified
Accton distributor.
Power and Cooling Problems
If the Power indicator does not turn on when the power cord is plugged in, you may
have a problem with the power outlet, power cord, or internal power supply as
explained in the previous section. However, if the unit powers off after running for a
while, check for loose power connections, power losses or surges at the power
outlet, and verify that the fan on back of the unit is unobstructed and running prior to
shutdown. If you still cannot isolate the problem, then the internal power supply may
be defective. In this case, contact your Accton distributor for assistance.