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Network switch question

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5 replies

by bdmitinc

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I have a client that can not get on to the internet or access the server. I can plug straight into the linksys router and get internet access.. If I plug the switch into the router everything lights up and shows connection but all computers come up with page cannot be displayed. I replaced the 16 port Linksys switch with a 16 port Trendnet new switch and replaced the cables even tho they tested out good. The same thing is happening with the new switch. No computers can get online thru the switch but any of them plugged straight into the router will go online and if the server and another computer is plugged into the router they can talk to each other.Why cant I get this switch or the other one to work. Both switches are 10/100 Auto-Midx& auto negotiation and the Linksys has been working for over a year in this environment.

5 replies

by menzo

Hi !

When connected through the Switch, do you have an IP Address from the Router ?

You can also try to force negotiation in 100 Full or 10 Half between your Switch and the Router.

by jimklallsoo

Let me get this straight.

You have a router facing onto the internet.
You plug in a switch with 1 or more pc's connected into the switch and they won't access the internet, even though packet lights are showing.
When you plug any of the pc's directly into the router the pc's access the Internet fine.

Try plugging the router into port 1 or port 24 and ensure that any uplink settings are set.
Http or Telent onto the router and check for any settings that can be cleared, reset to default etc including MAC Address filtering etc.

by bdmitinc

Yes that is correct. If the computers are plugged into the router they go online. Here is a new twist for you. Some of the computers work thru the switch if #10 is not plugged in. 10 goes to a Dlink switch with a print server pugged into it. as soon as I plug it in that it kills ALL the ports. If I leave it unplugged I get about 20 mins and then everything shuts down again. BUT they work for a short time without #10 plugged in, hence the D-link switch and print server. I have restarted both of them but it did not help.

by jazzmans2

You may have a device on the network that is saturating the network. I'm willing to bet, it's the print server or the switch. Work backwards, first disconnect the print server, then the DLINK to to see if the problem goes away.

Or disconnect all devices on the network and start reconnecting them one by one until the problem presents itself.

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