Acer Switch ALH 316ds 324ds User Manual

ALH-316ds/324ds  
Acer Ethernet Hub  
16/24-port 10/100 Mbps Ethernet Hub  
User's Guide  
 
Table of Contents  
1. Introduction............................................................. 1  
2. Hardware Installation.............................................. 2  
3. Hardware Description............................................. 8  
4. Trouble shooting..................................................... 14  
5. Specification........................................................... 15  
II  
 
1. Introduction  
Thanks for your purchase of the ALH-316ds/324ds. ALH-316ds/324ds is  
an 16/24-port dual speed hub works as terminal connecting equipment in  
corporate environment to combine the 10Mbps users and 100Mbps power  
users. With its auto-sensing and auto-negotiation functions, all you have to  
do is plug in and check the correctness of the LEDs and start to work.  
1.1 Product configuration  
The product configuration inside the package is shown in the Figure 1-1.  
Please check the contents of the package if there is any missing part  
before using the hub. The accessories of this product include:  
• ALH-316ds/324ds dual speed hub  
• Power cord  
1 piece  
1 piece  
1 pack  
1 book  
1 piece  
• Hangers and pads  
• User guide  
• Stacking cable (SCSI-II)  
Figure 1-1 Product configuration of ALH-316ds/324ds  
1
 
2. Hardware Installation  
This chapter will guide you through how to install the ALH-316ds/324ds. It  
includes procedures for installing the hub on your working surface,  
connecting the hub to your computer, and guidelines to see if it works well.  
Before setting up your hub, please take note of the front and rear panel of  
this hub, as shown in Figure 2-1 and 2-2.  
Figure 2-1 Front panel  
Figure 2-2 Rear Panel  
Before installing the hub, you have to find a solid working surface to place  
the hub and make sure the equipment is not close to any high voltage  
power source or over-heated sources. Also keep away from electronic  
equipment sensitive to electronic interface. The brief procedures of  
installing your hub should be as following section:  
2
 
2.1 Connecting power cord  
Carefully unpack the ALH-316ds/324ds and it’s accessories. For the first  
time that you use this hub, please make sure there is all the same as the  
checking list in the package. The procedure for connecting to the power  
will be:  
1.Place the hub on the desktop or one a rack stably and verify the  
power cord is a correct one suitable for your national standard plugs.  
2.Connect the power cord to the hub first  
3.Plug the power cord into the outlet on the wall, turn on the power,  
and check if the power LED lights up. If it lights up, then the hub is  
ready to be connected to the network. See Figure 2-3.  
Figure 2-3 Connecting to the power  
2.2 Connecting to computers  
Make sure the hub is ready for networking by checking if the PWR  
indicator displays.  
1.Shut down the computer and install an adapter card in.  
2.Plug in the one end of UTP/STP cable to the RJ-45 phone jack of the  
network adapter.  
3.Plug the other end of UTP/STP to normal ports of the ALH-  
316d/ALH-324ds.  
4.Turn on the PC and check if the Link LEDs on the adapter card and  
the hub (Named as Link/REC) are lit up. See Figure 2-4  
3
 
If the LED is not lit up, there must be something wrong and please  
reference to Chapter 4 for quick trouble shooting.  
Figure 2-4 Connecting to computers  
2.3 LEDs interface overview  
You can observe the LEDs status to see if the hub works fine. The  
meanings of LEDs are summarized as Table 2-1.  
LEDs  
System Power  
Indicators FAN Err.  
Color Blink Indication  
Green Power on  
Yellow Blink Fan Error  
Yellow Fan Fail  
Description  
Power is on and works normally.  
Fan inside is work abnormal.  
Fan inside is fail.  
10 Collision Yellow  
100 Collision Yellow  
10 Utilization Green/  
Yellow  
10 Collision Collision in 10 Mbps segment  
100 Collision Collision in 100 Mbps segment  
Utilization  
ratio  
Utilization ratio in 10 Mbps  
segment  
100 Utilization Green/  
Yellow  
Utilization  
ratio  
Utilization ratio in 100 Mbps  
segment  
Master  
Slave  
Green  
Green  
Green  
Master  
Slave  
Bridge function disabled 8/12  
Bridge function enabled 8/12  
Port is linked.  
Port  
Link/REC  
Link  
Indicators  
Green Blink Receiving  
Receiving data in this port  
Run in 100 Mbps  
100  
Green  
Dark  
100 Mbps  
10 Mbps  
Run in 10 Mbps  
Table 2-1 LEDs definition  
4
 
2.3.1 System indicators  
PWR: When the power is connected rightly, the PWR LED will be lit on  
Green.  
If the LED is not lit on, then you should check the connection of your power  
and the outlet of power.  
Fan Err.: When the fan malfunction at work, then the Fan Err LED will be  
lit up and blink. And when the fan is fail, the LED will be lit without blinking.  
You should check you fan and your vender and have a new fan to instead  
of the old one to make sure the equipment will work normally.  
10 Collision & 100 Collision: If there’s any collision happened in 10 Mbps  
or 100 Mbps domain, then the 10 Collision or 100 Collision LEDs will be lit up.  
Master: When the system is master hub, the Master LED will be lit on Green.  
Slave: When the system is slave hub, the Slave LED will be lit on green.  
2.3.2 Port indicators  
100: When the port is linked with 100 Mbps equipment, the LED will be lit  
on GREEN. Linking with 10 Mbps one, it will be dark.  
Link/REC: When the port is linked, the Link/REC will be lit on GREEN.  
And when there’s any data received in the port, the LED will be blinking in  
GREEN. If the port is linked, and the LED isn’t lit up, please check if the  
port connector fasten tightly.  
5
 
2.3.3 Network utilization indicators  
There are 2 sets of LED indicators to indicate the real-time network  
utilization of 10 Mbps and 100 Mbps domain.  
Speed  
Color  
Utilization  
5, 15, 25  
35, 55+  
10M  
10Mbps  
Green  
Yellow  
Green  
Yellow  
100M 100Mbps  
5, 15, 25  
35, 55+  
Figure 2-5 Network utilization indicators  
The number of utilization is in percentage. For example, “15” of “100M”  
means 15% of 100 Mbps, “55+” of “10M” means the utilization is more than  
55% of 10Mbps.  
6
 
2.4 Rack mounting  
To install the ALH-316ds/324ds hub in a 19-inch rack, please follow these steps:  
1. If the hub has rubber footpads on the bottom of the unit, please  
remove them.  
2. Locate the rack mounting holes on both sides of the hub  
(see Figure 2- 6).  
3. Using a cross-head screwdriver, attach the two mounting brackets to  
both sides of the hub with the four screws supplied with the unit  
(see Figure 2- 6).  
4. Place the hub in the rack and align the holes in the mounting bracket  
with the holes in the rack chassis (see Figure 2- 7).  
5. Insert two mounting screws (the rack-mount equipment should provide  
these screws), into each of the mounting brackets and tighten with a  
suitable screwdriver.  
Figure 2-6: Attaching mounting brackets (8 screws: M3x5)  
Figure 2-7: Attaching mounting brackets for a rack mount (4 screws: M5x10)  
Note: The pannel wall should be able to bear three times of the system's  
weight  
7
 
3. Hardware Description  
This chapter describes the network topology for hybrid 10 Mbps and 100  
Mbps networks, cabling requirement for connections, the interoperability  
between hubs and switches.  
3.1 Connecting a hub/switch to normal port  
You can use the ALH-316ds/324ds as a terminal connecting equipments  
in corporate LAN environment, and for the purpose of expanding your port  
number you can connect another hub/switch with it’s uplink port to the  
normal port of ALH-316ds/324ds. See Figure 3-1  
1. Place the hub/switch on a stable surface.  
2.Use one end of the UTP/STP cord to connect to the uplink port of the  
hub/switch.  
3. Use the other end of the UTP/STP cord to connect to the normal port of  
ALH-316ds/324ds  
4.Check the status of Link LED. If the Link LED is lit on green then it works  
normal.  
5.Then you can connect the terminal to the new hub/switch  
H U B  
Figure 3-1 Connecting to normal port with other hub/switch  
8
 
3.2 How to use up-link port  
With up-link port you can use it to cascade to another switch to expand  
your network. Please refer to the following procedure.  
1.Use one end of UTP to connect to the 16th /24th up-link port of ALH-  
316ds/324ds  
2.Use the other end to connect to the normal port of the new switch  
3.Make sure the Link LED is lit then it will work normally.  
Normal hub port  
Master  
Bridge port (10/100Mbps full/duplex)  
Bridge port (10/100Mbps half/duplex)  
Slave  
Bridge port (10/100Mbps full/duplex)  
3.3 Network topology for AcerHub ALH-316ds/324ds  
The factors for ALH-316ds/324ds dual-speed network implementation are:  
• For stand-alone one, the ALH-316ds/324ds consists of separate 10Mbps  
and 100Mbps network domains with one built-in switch to inter-connect  
the data in domains, as shown in Figure 3-2.  
316ds/324ds  
Figure 3-2 Separate domains in ALH-316ds/324ds.  
9
 
• The hub will be divided into Master and Slave hubs when they are  
stacked together. The upper most hub is the Master hub, and other hubs  
are Slave hubs. The Master hub continues to use the built-in switch but  
the switch in the Slave hubs will be disabled, as in Figure 3-3.  
Figure 3-3 Master and Slave hubs in stacking ALH-316ds/324ds.  
Note: 1. To concern the convenience of the cross-wiring connection  
between hubs, ALH-316ds/324ds provide 1 cross-over port  
(marked as"X").  
2. The up-link port utilizes the first connection port with "X"  
sign.When you connect to another hub by this uplink port.  
• The built-in switches in slave hubs will be disabled automatically to avoid  
data looping from multiple inter-connections of hubs, as shown in Figure  
3-4.  
Figure 3-4 Auto Data looping prevention in ALH-316ds/324ds.  
10  
 
• By way of an uplink port with a Bridge function, the limitations on  
100Mbps hub count(maximum 2) can be eliminated. The hub count is  
unlimited and cable length between hubs can reach 100meters, as  
shown in Figure 3-5.  
Figure 3-5Unlimited cascading of ALH-316ds/324ds.  
• All PCs with 10Mbps network adapter cards transmit data at 10Mbps  
and form the 10Mbps network domain, as shown in Figure 3-6.  
• PCs with 10/100Mbps network adapter cards will auto-negotiate and  
switch the network speed to 100Mbps. They transmit data at 100Mbps  
and form the 100Mbps network domain, as shown in Figure 3-6.  
Figure 3-6 Network domains and bridged uplink.  
• The data in 10Mbps or 100Mbps domain will be inter-connected by  
internal built-in switch in the Master hub consequently.  
• All hubs delivering data by the shared-bus always work on half-duplex  
mode; that is, data can be sent or received at one time in one direction.  
11  
 
3.4 Interconnection to Hubs and Switches  
3.4.1 Connecting to Ethernet Hubs : The factors governing hub  
interconnection are:  
• The hubs are only connected by uplink port. ALH-316ds/324ds will  
automatically transmit at 10Mbps network speed when connecting to  
10Mbps Ethernet hubs and 100Mbps network speed if connected to  
100Mbps hubs.  
• If multiple ALH-316ds/324ds are stacked together, users can connect to  
hubs by the bridge uplink port in master/slave hubs. , as shown in Figure  
3-7.  
Figure 3-7 Connect to Ethernet Hubs.  
3.4.2 Connecting to Ethernet Switches : The factors governing hub and  
switch interconnection are:  
• The hubs are only connected to Ethernet switches by an uplink port.  
ALH-316ds/324ds will automatically work at 100Mbps network speed  
when connected to 10/100Mbps Ethernet switching ports and it will work  
at 10Mbps network speed if connected to 10Mbps switching ports.  
12  
 
Figure 3-8 Connect to Ethernet Switches.  
No matter if the ALH-316ds/324ds hubs are stacked together or not, the  
user always can connect to Ethernet switches by the uplink port.  
3.5 Application  
With this application diagram, you can clearly see the possibility what ALH-  
316ds/324ds can do for you in expand your network. (See Figure 3-9)  
Figure 3-9 Application diagram  
Notice: Use UTP Cat. 5 to connect to 100 Mbps equipment and UTP Cat.  
3,4,5 to connect to 10 Mbps one.  
13  
 
4.Trouble shooting  
4.1 Symptoms and Suggestions  
Symptoms  
Possible Reason  
Suggestion  
All LEDs are off.  
The hub is not receiving 1.Check if the AC power cord  
power.  
plug is both securely fastened at  
the AC outlet and the hubs.  
2.Contact you vender if still  
unworkable.  
Fan Err. LED is  
The fan is dead or works 1.Check your fan, maybe you  
blinking or down  
abnormal  
should have a new fan.  
2.Contact the vender  
Link LED of a  
connected port  
is off.  
1.The UTP cable is  
not securely connected  
2.The port is bad  
1.Check the cable connection  
2 Try to connect another port  
3.Check if the network interface  
3.If the other party is a  
PC, the network interface card (NIC) were installed  
card(NIC) could be not  
working  
properly.  
4.If the other party is a  
hub or LAN switch, the  
connected ports signal  
could be cross-over  
4.Make sure ALH-316ds/324ds  
normal port is connected to the  
other hub’s (or switch’s) uplink  
port is connected the other’s  
normal port.  
5.The UTP cable is  
broken, or it is cross-  
overed cable.  
5.Try another normal cable.  
100 LED is not lit  
The auto-negotiation  
1. Check if you force the  
when connected to a function is failed between connection equipment in  
100 NIC or 100 Hub  
(but Link LED is lit.)  
ALH-316ds/324ds and the specific mode. If, yes, then free  
other part  
it to auto-negotiation  
2. Un-plug the UTP cable from  
ALH-316ds/324ds and plug-in  
again.  
3.Check if the NIC is set to auto-  
negotiation mode.  
4.Check if the other hub is set to  
auto-negotiation mode  
5. If the above steps does not  
work, it is an interoperability  
problem, contact your vender.  
14  
 
5. Specifications  
Specification:  
Comply with IEEE 802.3 /802.3u repeater standards  
- 16/24-port 10Base-T/100Base-TX RJ-45 phone jack ports  
- 1-port Uplink 10Base-T/100Base-TX RJ-45 phone jack port  
LEDs indicators: Power, Fan err., Collision, Utilization, Link/Receive,  
10/100Mbps.  
Power supply: Internal switching power supply: 100~240V AC, 50~60 Hz.  
The power receptacle connects a power supply cord with the following  
specifications:  
CSA and UL Listed, No. 18. AWG minimum type SVT or better in  
mechanical serviceability. Terminated in a moulded-pm NEMA type 5-15 or  
6-15P(for 120VAC or 250VAC respectively); or male attachment cap at one  
end, the other end terminates in a moulded-on IEC-type CEE-22 female  
connector body.  
Dimension:  
Standards 19 inches rack mount size  
Temperature: 0~50°C  
Environment:  
Humidity: 20~80% non-condensing  
Cabling requirement:  
EMI:  
UTP Category 3,4,5 for 10Base-T  
UTP Category 5 for 100Base-TX  
FCC Class A, CE A, VCCI A, C-tick A  
15  
 
Product Limited Warranty  
Acer Netxus Incorporated (ANI) warrants its product to be free from defects in  
materials and workmanship, under normal use and service, for the following lengths of  
time from the date of purchase from ANI or its Authorized Resellers.  
Network adapter card  
Unmanaged hub  
Limited Lifetime  
*Limited Lifetime  
*3 year  
Dual-speed hub  
Switch and managed hub  
*3 year  
* Power supply/adapter and fans in these devices covered by ONE YEAR warranty  
All products with limited lifetime warranty have a standard five-year warranty. This  
warranty does not cover the product if it is damaged by abuse, accident, misuse,  
improper installation, or improper testing. If a product does not operate as warranted  
during the applicable warranty period, ANI shall, at its option and expense, either repair  
the defective product or part returned to ANI, or deliver to customer an equivalent  
product or part to replace the defective item. All products that are replaced will become  
the property of ANI. Replacement products may be new or reconditioned. Any  
replacement or repaired product or part shall be covered by warranty for ninety days,or  
for the remainder of the initial warranty period, whichever is longer. ANI shall not be  
responsible for any software, firmware, information, or memory data of customer  
contained in, stored on, or integrated with any products returned to ANI pursuant to any  
warranty. Before you obtain warranty service, you must request an RMA (Return  
Materials Authorization) number by calling, faxing or writing ANI’s Customer Service  
Department at the numbers listed below. You must use the original container (or the  
equivalent) and pay the shipping charge.  
ANI SHALL NOT BE HELD LIABLE FOR INCIDENTAL, CONSEQUENTIAL, INDIRECT,  
SPECIAL OR RUNTIME DAMAGES OF ANY KIND; OR FOR LOSS OF REVENUE,  
LOSS OF BUSINESS, OR OTHER FINANCIAL LOSS ARISING OUT OF OR IN  
CONNECTION WITH THE SALE, INSTALLATION, MAINTENANCE, USE,  
PERFORMANCE, FAILURE, OR INTERRUPTION OF ITS PRODUCTS, EVEN IF ANI  
OR ITS AUTHORIZED DEALER HAS BEEN ADVISED OF THE POSSIBILITY OF  
SUCH DAMAGES.  
If you purchased this product in the UNITED STATES, some states do not allow the  
limitation or exclusion of liability for incidental consequential damages, so the above  
limitation may not apply to you.  
Model Name  
Series No. (S/N)  
Purchase Date  
/
/
( Authorized distributors' or Resellers' Stamp )  
16  
 
If you purchased this product in the UNITED STATES, some states do not allow the limitation or  
exclusion of liability for incidental consequential damages, so the above limitation may not apply  
to you.  
Contact us:  
Acer Computer International Ltd.  
Acer UK Limited  
Taiwan Branch  
Tel: 44-1628-533422  
Fax: 44-1628-524071  
Tel: 886-2-2696 0123 ext.3130  
Fax: 886-2-8691 2316  
Acer Computer France S.A.R.L.  
Acer America Corporation  
Tel: 33-1-4817 4040  
Fax: 33-1-4817 4089  
Tel: 1-408-433 3678  
Fax:1-408-922 2940  
Acer Computer GmbH  
Distribution/Information  
Hotline: 1-800-369 6736  
Fax: 1-408-432 0496  
Tel: 49-4102-488-0  
Fax: 49-4102-488-101  
Dealers' Information  
Hotline: Germany 0180-3234781  
End users' Information  
Acer Latin America Inc.  
Hotline: Germany 0180-5009898  
Tel: 1-305-392 7270  
Fax:1-305-392 7216  
Acer Computer Iberica, S.A.  
Tel: 34-3-499-0303  
Fax: 34-3-499-0483  
Acer Japan Corporation  
Tel: 81-4-8290 1819  
Acer Italy/Texas Instruments  
Fax: 81-4-8290 1820  
Tel: 39-2-2692-2565  
Fax: 39-2-2692-1021  
Acer Computer B.V.  
Tel: 31-73-645 9645  
Fax: 31-73-645 9599  
17  
 
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P/N 49.22018.202  
Acer Netxus Inc.  
A Communications Company of Acer  
 

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