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General discussion

Internet Status Connected at 100.0 Mbps but no Internet

May 8, 2005 9:08PM PDT

I have a linksys router at home with two PCs connected and sharing Internet access. I made a network cable to connect a third PC but when I connect to router and PC I see the connection status is connected at 100.0 Mbps but no Internet.

I swapped the cable and everything worked fine, I was able to access Internet. The funny thing is, if I use the same cable I made at work on our network I can connect to Internet with no problems. Any ideas why that is? Thanks!

Discussion is locked

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Have you renewed your IP on the third PC?
May 9, 2005 9:01AM PDT

Make sure you're plugging the third PC into a switch port on the router, and not the WAN or DSL Port.

Also, do an IP Release/Renew on the third PC after connecting to the Router and getting a link light. Please post if you need help with releasing your IP address.

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Tried That
May 9, 2005 12:09PM PDT

Thanks for the reply, I have static (private) IPs so release/renew won't work. All my network settings are correct and working properly. I am a PC Tech but this issue has me a little stumped. I would say the cable is bad but since it works on another network...maybe NICs in PCs? Haven't tried setting link speeds on NIC yet, just ran across something about that. Connection status is sending packets but I'm not receiving...

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Known good cable?
May 10, 2005 12:40AM PDT

Sorry to keep bringing you back to the basics, but have you tried a known good cable?

You also mentioned that you are using static IP's. Does the third PC have the proper DNS and/or WINS Server information?

Can you ping a local LAN address? Can you ping your gateway? Can you ping an Internet address by IP? Can you ping by name? If you can ping your gateway, try pinging Cisco by pinging 198.133.219.25. If you get a reply from that but don't get a reply when you ping www.cisco.com, there's a name resolution issue.

Hope this helps.

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Router?
May 10, 2005 3:27PM PDT

Maybe it was just a bad router. If the cable works fine at work, and it does say it was connected to LAN at home, then there's probably nothing wrong with it. Routers are not all that reliable.

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Found the Problem
May 15, 2005 11:30AM PDT

Thanks All,

I set the NIC card's Link Speed/Duplex Mode on the 3rd PC to 10Mbps/Full Duplex and tested it with the cable I made and it worked! I was able to browse the Internet with no problem and no noticable decrease in speed while browsing the Net. I also tested on 10Mbps/Half Duplex and that worked with the cable I made too.

It was orginally set to Auto Negotiation. I tested my cable on the last option which was 100Mbps/Half Duplex and the cable didn't work on that setting.

I guess this means the cable's throughput is only capable of 10Mbps...?

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Speed won't be noticeable to Internet
May 16, 2005 6:18AM PDT

Dropping your speed won't be noticeable when you're going to the Internet because you're probably only getting 1 or 2 Megabits per second anyway. If you want to talk to other PC's via your LAN, the speed decrease from 100 Mbps to 10 Mbps will be noticeable. You could try using a known good Cat 5, 5e, or 6 cable with the 100 Mbps setting. Some devices have difficulty with autonegotion too. You may have to set speed on both devices, assuming the router permits that on the switch ports.

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The cable
May 24, 2005 7:50AM PDT

If you had a good cable you would not have had to decrease from 100Mbps to 10...The same thing happened to me! I invested in a cable tester and discovered how many bad cables I was making. I NEVER make a patch or cross over cable without testing it, be it 1 foot or 100 feet. Speed is everything to my customers! Me thinking I can make cables without testing was foolish! My service calls have dropped 30% in my department...

Remember...Pray to God, but continue to row toward the shore!

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Thank you...
Jul 24, 2006 12:05PM PDT

I have two computers, I have one of those cheapo "Linksys Everywhere"
jobbarinos, and it was giving me fits, my girlfriend and I have been taking turns sipping from the broadband Krazy Kannon, and I tried
what you said. It didn't work for a while, then I
renamed, disabled, then deleted the Ethernet driver in the
Hardware tab, rebooted, and made sure to set it for
10 MB Full Duplex... and I also tried connecting the CAT 5 cable to other ports on the router, and the combination
of everything plus me sacrificing the Cocker Spaniel in the microwave worked.

I've read a plethora of stuff on-line, including one person who said that Linksys routers kick up their CAT 5 cables after about a year. I'm glad that didn't prove to be the nutcase.

My system info, I'm running an ancient Barton Athlon XP 3200+
(It's paid for.)
Antec solid-state fanless power supply,
250GB WD
30GB OOOOLD drive
120 GB WD
80 GB WD (Yeah, it's noisy as around the ice cream truck in the trailer park in August next to this thing. )Two separate cooling fans. Antec SX1200 server case.
Heck, what they have to do with ethernet I have yet to know. The mobo? An Abit NF7-G. I intend to hang on to this digital slop hog until -- I don't know -- third quarter 2007, fer sure, maybe later.

Again, thanks, may the compu-turd of paradise never land on your lawn.