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Plugging in a switch makes my internet disconnect

liamb2001
Grafter
Posts: 33
Registered: 23-08-2013

Plugging in a switch makes my internet disconnect

Hi guys,
Im really hoping this is a simple one.
I have just purchased an 8 port switch which is supposed to just plug into the router and work automatically according to the instructions yet when i plug it in my plusnet router disconnects from the internet giving a red light. Can anyone tell me how i sort this at all please ? I would really appreciate it
thanks
9 REPLIES
Community Veteran
Posts: 5,227
Thanks: 1,318
Fixes: 31
Registered: 16-10-2014

Re: Plugging in a switch makes my internet disconnect

Can you start by telling us what kind of router and switch it is please, this would be a big help.
liamb2001
Grafter
Posts: 33
Registered: 23-08-2013

Re: Plugging in a switch makes my internet disconnect

Yes sorry i was trying to get the name of it
It is a tplink 8 port 10/100mbps desktop switch
Errors in log are showing
FIREWALL icmp check (1 of 1): Protocol: ICMP Src ip: 45.35.96.242 Dst ip: 146.199.xxx.xxxType: Destination Unreachable Code: Port Unreacheable
If that helps ?
liamb2001
Grafter
Posts: 33
Registered: 23-08-2013

Re: Plugging in a switch makes my internet disconnect

Router is a Technicolor TG582n FTTC
Community Veteran
Posts: 5,227
Thanks: 1,318
Fixes: 31
Registered: 16-10-2014

Re: Plugging in a switch makes my internet disconnect

Does your switch have a web based interface? If it does it may well be sharing the same internal IP as your router. I suspect the errors in the log may be down to the fact that the connection has been dropped. Do you have a model number for the switch?
Community Veteran
Posts: 26,627
Thanks: 860
Fixes: 10
Registered: 10-04-2007

Re: Plugging in a switch makes my internet disconnect

Which port on the TG582 are you plugging the switch in to?
jelv (a.k.a Spoon Whittler)
   Why I have left Plusnet (warning: long post!)   
Broadband: Andrews & Arnold Home::1 (FTTC 80/20)
Line rental: Pulse 8 Home Line Rental (£13/month)
Mobile: iD mobile (£4/month)
liamb2001
Grafter
Posts: 33
Registered: 23-08-2013

Re: Plugging in a switch makes my internet disconnect

They are not labelled. The far left and the 3rd one from the left. The far right one is for the modem.
liamb2001
Grafter
Posts: 33
Registered: 23-08-2013

Re: Plugging in a switch makes my internet disconnect

It appears to be related to my tp 3 port powerline that's causing the router to disconnect. Ive always used the first port but im now connecting a second port into port 2 thats causing it. Any ideas ?
Community Veteran
Posts: 26,627
Thanks: 860
Fixes: 10
Registered: 10-04-2007

Re: Plugging in a switch makes my internet disconnect

Try plugging just the switch in to the router and the powerline in to the switch.
jelv (a.k.a Spoon Whittler)
   Why I have left Plusnet (warning: long post!)   
Broadband: Andrews & Arnold Home::1 (FTTC 80/20)
Line rental: Pulse 8 Home Line Rental (£13/month)
Mobile: iD mobile (£4/month)
PeeGee
Aspiring Pro
Posts: 1,086
Thanks: 47
Fixes: 3
Registered: 05-04-2009

Re: Plugging in a switch makes my internet disconnect

Quote from: liamb2001
It appears to be related to my tp 3 port powerline that's causing the router to disconnect. Ive always used the first port but im now connecting a second port into port 2 thats causing it. Any ideas ?

Are you saying you have two ports from the powerline into the router and/or switch? If so, that is likely to cause a crash as there is probably a "loop" where routing table requests go from port to port in a recursive loop (LEDs flash rapidly and continuously). More expensive switches have protection for this fault.
Phil
Plusnet Fibre (Sep 2014), Essentials (Feb 2013); ADSL (Apr 2009); Customer since Jan 2004 (on 28kb dial-up)
Using a TP-Link TD-W9980 modem-router.