problem in cisco 1600 series router

sadique88
sadique88 used Ask the Experts™
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We have a Lan connection through Cisco 1600 series router over here.We have 7 systems,working in Windows 98 SE.My problem is Sometimes 1 machine in the network doesnt connect to internet.When i ping the router it gives request timed out.mean time all the other system are working fine.Why its happening like that.Any suggestion??
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When you ping the router, you need to do several things.

1.  Ping the loopback address 127.0.0.1 to see if TCP/IP is running.

2.  Ping yourself at your IP address to see if its valid

3.  Then ping the router

4.  Then ping another workstation.

There are several things that can be causing your problem.

1.  You might not have a unique machine name on that PC.  
2.  You might not have a unique IP address
3.  Network card could be bad
4.  Could be a problem with the wiring.
5.  Could be a problem with the hub

When you can't ping the router, are the leds lit up on the hub and the network card.  Do you have access to anything else.

What are the results when you run 'IPCONFIG /ALL | MORE'

Harry
Les MooreSr. Systems Engineer
Top Expert 2008

Commented:
I agree with Harry. Intermittent problems are the most difficult to troubleshoot, but are most often attributed to physical conditions. Cables running parallel to power cables, too close to microwave ovens, too close to florescent light transformers. Bad connections at punch-down block.
Had one office that had one PC drop off the net every few days. Turned out that whenever someone switched on the lights in the closet down the hall, it lost its network connection. It was just far enough away that nobody ever made the connection. In another site, it was whenever the coffe pot was brewing coffee causing a power surge just enough to cause interference in the network cables that were too close to the main power inlet.
Had a call just today. "Come tell me why my network wasn't working an hour ago, but it is now after I cycled power on the switch." It's awful hard to troubleshoot a problem that doesn't exist at the time you're looking.

Commented:
Are you using NAT on the router?
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sadique88 How are you doing with this?

Author

Commented:
I had asked a question regarding the router last time.'ve got some comments from 2 persons.Thanx for the comments.But my problem is not been solved.This was the question i had asked.We have a Lan connection through Cisco 1600 series router over here.We have 7 systems,working in Windows 98 SE.My problem is Sometimes 1 machine in the network doesnt connect to internet.When i ping the router it gives request timed out.mean time all the other system are working fine.Why its happening like that.Any suggestion..Any other good comments so that i solve this problem.

Commented:
I can't really help, not enough Information to form an opinion... Can the PC witht the problem ping 127.0.0.? can it ping another machine on its subnet? Are you using NAT? Are you using DHCP? Can the machine be pinged from another machine on the same subnet?

Gary
sadique88 I'd love to help but I set out a series of test which are the basic trouble shooting test for this senario and I'd need to know the results.  Can you ping 127.0.0.1, can you ping the card's IP.  What are the lights saying on the router/hub and NIC.

You have got to answer these questions before anyone can begin to help you.  If you want out expert help, you need to be our eyes and let us know what you see.

Harry
No comment has been added lately, so it's time to clean up this TA.
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[Answered by: HDWILKINS]

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