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Unless the electronics is broke you seem to be having a wiring related issue. Besides a loop then a short in cable or at a port.
Verify no apparent physical stress displayed on unit or cabling and the correct power supply.
One test for bad electronics is by removing all wires, then look for bent & touching conductors in any of the ports from a poorly crimped cord damaging the port. Try to straighten back into shape - 8 per jack or once the touched eliminated if meta fingers bent my not be able to use that port and check the cable ends for cause and don't use. Without any cords return power. Only the power light should remain on after about 3 seconds. Any other light display says problem and after verifying correct power supply call it toast - it broken. If only the power light is lit then connect the 8 conductor (4-pair) Ethernet cable from the cable or DSL modem. That port should light if that device is alive. Note: No telephone RJ-11 size 2 or 3 pair cords, if it fits in a telephone jack you got the wrong one and can damage a port physically. RJ-45s used in Ethernet are noticeably larger. Assuming no strangeness in the other lights with the cable/DSL modem connected add one cord at a time to the other ports. Stop and remove any that caused/causes the initially observed condition that is the problem leg; try a different cord and examine the problem cord for physical damage (cuts, tears, squashed blemished area, ends pulled such that conductor open, or two or more wires shorted on an end) As to internet connection try with only link to Cable/DSL modem and one cable to a PC and then see if the PC is obtaining an IP address via DHCP filling in the interface settings. If Windows "ipconfig" if Mac OS/X or Linux "ifconfig eth0" at the command prompt in a terminal window. Ping the entry for gateway, if no lost packets the connection is sound PC through e-switch to modem. Enter as new problem with modem type and PC operating system if this is a problem after the wiring is straightened out. When the switch is working correctly Power light is steady ON and Port lights are mostly ON but blink with traffic down that leg. Does this help?
Hi If you are running the Cnet CNHS-1600 power switch in default mode ( No Vlans created) then you do not need to configure anything. Connect any Cat5 or CAT6 LAN cable from any free port to the new small switch. The Cnet CNHS-1600 power switch is Auto MDI/Auto MDI-X enabled so no need to worry about the cross cable. Simply plugging in a cable between Cnet CNHS-1600 power switch and the new switch will extend your LAN.
The problem can be caused, because of two reasons, one the router profile on the computer has got corrupted and second the router itself. Have you tried resetting the router to factory defaults.. Caution: all wireless security settings and user name and passwords would go back to factory defaults.
1.Disconnect all cable from the back of the router.
2. Shut down your computer and the DSL box
3.Press the reset button, using a paper clip at the back of the router.Keep it pressed for 5 seconds
4. Disconnect the power cord to the router
5. Switch on the Dsl box, wait for the lights to stablize
6. Reconnect the interenet cable and the power cable to the router and power it on.
7 Let the lights stabalise on the router and power on the computer.
Check if that resolves the problem, if not we might need to update the router.
The LEDS blinking normally would indicate reset internally or when the unit has just been powered on. Continous LEDs lighting up or flashing with or without a connection is an indication of extensive hardware failure. This could have been brought about by a near lightning strike, a power surge or simply component failure. Unfortunately the repairs is not economically reasonable and therefore a replacement might be better off. Sorry.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
maybe its not in the hub/router, or in your lancard has the problem. try to change the networking cable you are using it sometimes the cable has a teared wire inside, or probably the lancard or your hub does not work for the type of networking cable, there are 2 types of connection for UTP cable first is the Straight through cable and the second is the Cross Over connection. Try to mix and match the cable that you have and try to use another one instead..
The trunk port of the switch is meant for cascading the switch i.e. you can connect another switch to that port for adding more computers.
For connecting to a multihomed PC (with 2 lan cards) Please type in static ip address to the lan card that is connecting to the switch and alos add static ip adds to all the other computers taht are to be connected for sharing. Then share the internet connection through the other lan card.