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4.Troubleshooting

This chapter contains information to help you solve issues. If the Switch 
is  not  functioning  properly,  make  sure  the  Ethernet  Switch  was  set  up 
according to instructions in this manual.

The Link/Act LED is not lit

Solution

Check the cable connection of the Switch.

Performance is bad

Solution

Check the speed duplex mode of the partner device. The 
FNSW-4800  is  run  at  Auto-negotiation  mode  and  if  the 
partner  is  set  to  half  duplex,  then  the  performance  will 
be poor.

100Base-TX port link LED is lit, but the traffic is irreg

ular

Solution

Check that the attached device is not set to dedicate full 
duplex.  Some  devices  use  a  physical  or  software  switch 
to  change  duplex  modes.  Auto-negotiation  may  not 
recognize this type of full-duplex setting.

Why the Switch doesn’t connect to the network 

Solution

Check  the  LNK/ACT  LED  on  the  Switch  Try  another  port 
on  the  Switch  Make  sure  the  cable  is  installed  properly 
Make sure the cable is the right type Turn off the power. 
After a while, turn on power again..

Summary of Contents for FNSW-4800v2

Page 1: ......

Page 2: ...48 Port 10 100Mbps Fast Ethernet Switch FNSW 4800v2 User s Manual ...

Page 3: ...n the part of PLANET PLANET assumes no responsibility for any inaccuracies that may be contained in this User s Manual PLANET makes no commitment to update or keep current the information in this User s Manual and reserves the right to make improvements to this User s Manual and or to the products described in this User s Manual at any time without notice If you find information in this manual tha...

Page 4: ...adequate measures WEEE Warning To avoid the potential effects on the environment and human health as a result of the presence of hazardous substances in electrical and electronic equipment end users of electrical and electronic equipment should understand the meaning of the crossed out wheeled bin symbol Do not dispose of WEEE as unsorted municipal waste and have to collect such WEEE separately Re...

Page 5: ...n 8 2 1 Front Panel 8 2 2 Rear Panel 9 2 3 Hardware Installation 9 3 Switch Operation 12 3 1 Address Table 12 3 2 Learning 12 3 3 Forwarding Filtering 12 3 4 Store and Forward 12 3 5 Auto Negotiation 13 4 Troubleshooting 14 Appendix A Networking Connection 15 A 1 Switch s RJ 45 Pin Assignments 15 A 2 RJ 45 cable pin assignment 15 ...

Page 6: ...oasts high performance switch architecture that is capable of providing non blocking switch fabric and wire speed throughput as high as 8 8Gbps With its Auto negotiation capability all the RJ 45 ports can be configured to speeds of 10 20Mbps or 100 200Mbps automatically The FNSW 4800 supports MDI MDI X convertible on 48 10 100Mbps ports the dual speed ports use standard twisted pair cabling and ar...

Page 7: ... on each RJ 45 port Prevents packet loss with back pressure Half duplex and 802 3x PAUSE frame flow control Full duplex High performance Store and Forward architecture broadcast storm control runt CRC filtering eliminates erroneous packets to optimize network bandwidth 8K MAC address table automatic source address learning and ageing 2 5Mbit embedded memory for packet buffers Support up to 1522 by...

Page 8: ...w Control Back pressure for half duplex IEEE 802 3x Pause Frame for full duplex Dimensions W x D x H 440 x 260 x 44 mm 1U height Weight 3 18kg Power Requirement 100 240V AC 50 60 Hz 0 6A Power Consumption Dissipation 18 Watts 61 BTU Temperature Operating 0 50 degree C Storage 40 70 degree C Humidity Operating 10 to 90 Storage 5 to 95 Non condensing Standards Conformance Regulation Compliance FCC P...

Page 9: ...ecting any network device to the FNSW 4800 read this chapter carefully 2 1 Front Panel The Front Panel of the FNSW 4800 Fast Ethernet Switch consists of 48x Auto Sensing 10 100Mbps Ethernet RJ 45 Ports the LED Indicators are also located on the front panel of the FNSW 4800 Figure 2 1 FNSW 4800 Switch front panel 2 1 1 LED indicators System LED Color Function PWR Green Lights to indicate that the S...

Page 10: ...lp to protect your FNSW 4800 from being damaged by unregulated surge or current to the FNSW 4800 2 3 Hardware Installation This part describes how to install your FNSW 4800 and make connections to the Switch Please read the following topics and perform the procedures in the order being presented To install your Switch on a desktop or shelf simply completed the following steps 2 3 1 Desktop Install...

Page 11: ...formation please see the Cabling Specification in Appendix A Step 5 Supply power to the Switch A Connect one end of the power cable to the Switch B Connect the power plug of the power cable to a standard wall outlet then power on the Switch When the Switch receives power the Power LED should remain solid Green 2 3 2 Rack Mounting To install the Switch in a 19 inch standard rack follow the instruct...

Page 12: ... brackets tightly Step 4 Follow the same steps to attach the second bracket to the opposite side Step 5 After the brackets are attached to the Switch use suitable screws to securely attach the brackets to the rack as shown in Figure 2 4 Figure 2 4 Mounting the Switch in a Rack Step 6 Proceed with the steps 4 and steps 5 of section 2 3 1 Desktop Installation to connect the network cabling and suppl...

Page 13: ...will lookup the address table for the destination address If not found this packet will be forwarded to all the other ports except the port which this packet comes in And these ports will transmit this packet to the network it connected If found and the destination address is located at different port from this packet comes in the Ethernet Switching will forward this packet to the port where this ...

Page 14: ...ntly used to filter packets whose destination address is on the same segment as the source address This confines network traffic to its respective domain reducing the overall load on the network The Switch performs Store and Forward therefore no error packets occur More reliably it reduces the re transmission rate No packet loss will occur 3 5 Auto Negotiation The STP ports on the FNSW 4800 switch...

Page 15: ...e and if the partner is set to half duplex then the performance will be poor 100Base TX port link LED is lit but the traffic is irregular Solution Check that the attached device is not set to dedicate full duplex Some devices use a physical or software switch to change duplex modes Auto negotiation may not recognize this type of full duplex setting Why the Switch doesn t connect to the network Sol...

Page 16: ...n assignment 21 3 6 1 2 3 6 21 3 6 There are 8 wires on a standard UTP STP cable and each wire is color coded The following shows the pin allocation and color of straight cable and crossover cable connection Figure A 1 Straight Through and Crossover Cable Please make sure your connected cables are with same pin assignment and color as above picture before deploying the cables into your network ...

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