Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I'm not sure if this is the right forum for this, but it's a networking question.

I have in my basement a router (DLink DIR-655) which is connecting to our ISP, and I have cables running to wall jacks in the first floor. A wall jack which terminates in the living room I have connected to a switch, a DLink 10/100/1000 (DGS-1005G). To this I have my PS3 connected which can connect to the internet fine (although it seems to not get the same upload / download speeds other devices get) and my Sony Bravia TV (KDL-46Z5100). The PS3 registers as GB, while the TV 100MB (its port lights orange).

The problem is I can't get the TV to connect to the internet. If I try DHCP, it doesn't seem to find the DNS server (on another switch connected to the same router in a different room). If I hard code the IP address, still nothing.

I found that if I connect the TV directly into the wall, it can connect. It's just through the switch I'm having problems. Additionally, even if I then plug it back into the switch and connect the switch to the wall jack, the connect continues to work. It just seems that I can't get it initialize when connected to the switch.

share|improve this question
    
Change the network cable, or use the cable from your PS3 to connect TV to hub. – John Siu Dec 23 '12 at 6:31
    
DGS-1005G is not HUB - it's switch. Major difference. – Radio Dec 23 '12 at 8:08
up vote 1 down vote accepted
+50

It looks like your DGS-1005G does NOT have a link established to your DIR-655.

The reason why your PS3 still works, because it's using Wi-Fi connection, even when you have connected it using cable, it falls over to Wi-Fi.

The reason why link between your switch and router is not getting established is wrong wiring. In some cases you cannot connect two switched devices with a the regular wiring. You need to re-do wiring to match crossover type:

http://en.wikipedia.org/wiki/Ethernet_crossover_cable

share|improve this answer
    
If you look at the specification for the switch you will find the line All UTP Ports support Auto-MDI/MDI-X, no cross-over cable needed. This means even if you plug in a crossover cable the switch will auto configure around it.I would suggest you plug something else into the switch to test the connection. – Stevetech Dec 23 '12 at 11:29
    
Never trusted Auto-MDIs, happened many times that some models of D-link supported MDI only on WAN port. – Radio Dec 23 '12 at 16:24
    
The hub is supposed to auto MDI/MDIX on all ports, and my laptop always worked fine through it. However, I did discover when I looked at my cabling again that I was in fact using a crossover cable for the PS3. I replaced the normal cable to the tv with a crossover and it seems to be working now. What baffles me is that I had tested this setup with I first put the Ethernet ports into the living room, and the TV worked fine with a normal cable. I guess I discovered the PS3 wasn't. – Andy Dec 23 '12 at 23:37
    
I have a question about the solution; instead of using two crossover cables from the switch to the devices, can I use two straight cables and use the crossover from the switch to the wall jack? – Andy Dec 23 '12 at 23:47
    
@Andy: You got it. That's how it supposed to be in the first place. Switch to Switch - cross, Switch to Device - straight. – Radio Dec 24 '12 at 5:29

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .