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Conflict for IP address with the system

M

montanafan

Diamond Member
I've been having a problem with this off and on almost all year and thought that maybe one of you could finally help me.

A couple of months into the beginning of the year the principal gave me a really nice Sony Vaio system that had been in another teacher's room (that teacher moved to Florida). Most of the time everything works fine, but occasionally I can't get on the internet with it because I get this message at start up: "The system has detected a conflict for IP address......with the system having hardware address.... The interface has been disabled".

I have to shut it down and then start it back up some time later and hope that it doesn't deny me internet access until it feels like it some time later.

I've asked the computer class teachers here and they don't know what to do about it and I've also had the regional technology guy in to look at it and I thought he had fixed it, but it did it again today.

Anyone know what the problem could be and how I can go about remedying it?


P. S. I'm using ME on that system.
 
Each computer on the network has to have an individual IP address. Your computer is duplicating an address already in use and therefore disables itself. When that other computer is turned off, you can then log on (and it works both ways, leave your computer on all day and someone will complain that they cant get on). Sounds like you have a static IP address (under Network properties, lan card TCP/IP properties), you can try incrementing the last number (if its 192.168.1.55 bump it to 192.168.1.222). You're better off getting your network administrator to give you an unused IP address as that will avoid future conflicts.
 
Or you could have some kind of loop in the network, where you are seeing your own arp frames.

Are you setup to use DHCP and obtain an address automatically? If so what address/mask/gateway do you get?
 
Could be a combination of static IP and DHCP, then the following is likely to happen:

You are using a static IP-address. Someone else on the network is using DHCP, to obtain an IP-address. When you are not on the network, the DHCP-server checks for an unused IP-address and assigns that one, to the pc that's asking for one.

When you're logging in, and your pc with static IP-address "says" : "this is my IP-address" it gets back the answer: "Sorry, already taken."
That's probably the reason for "conflict for IP-address".

If you're not familiar with how to change it, you could ask someone to set up your pc, to use DHCP too.

 
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