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Thread ID: 79207 2007-05-12 00:44:00 IP address conflict with 2 pc's Strommer (42) Press F1
Post ID Timestamp Content User
549258 2007-05-16 22:04:00 Update: Finally solved, thanks to Slingshot Help Desk.

They gave me new settings for the IP address and DNS Server, for each pc (desktop and laptop). The Help person was stumped about the Network Bridge on the laptop - they told me to change things via the LAN but this had no such settings so I did it through the Network Bridge.
Strommer (42)
549259 2007-05-16 22:17:00 Why be so tight with the info? You could let us know what the new settings involved. Are each of your computers now using a fixed address? PaulD (232)
549260 2007-05-16 22:38:00 Why be so tight with the info? You could let us know what the new settings involved. Are each of your computers now using a fixed address?

Tight? I did not think it would be useful.
I thought the settings are specific to my pc's, my ISP.
I could post screenshots if I am convinced that this would be of general help.
Strommer (42)
549261 2007-05-16 22:59:00 Screenshots shouldn't be needed just in general terms what was different.
You've had the attention of a few people wondering why your router wasn't handing out distinct addresses to each computer and they may be interested in the solution.
PaulD (232)
549262 2007-05-16 23:28:00 too late to be of use now but I wondered if your desktop had a fixed IP setting. DHCP will hand out addresse to any PC configured to accept them, but if say it gave the laptop 192.168.1.2 and then you turned on the desktop which had a fixed IP of .1.2 it would cause a conflict.

In the same situation if the desktop was running the router would know that .1.2 was in use and give the laptop .1.3 so everything would be ok - just depending on which was connected first.

At home because I need pinholes for some applications I use a fixed IP on one PC and DHCP on the rest and set the router to start handing out addresses from higer up like this:
192.168.1.1 - router with DHCP range set to start from .1.8
192.168.1.2 - pc which needs pinholes
192.168.1.8 - usually 2nd PC
192.168.1.9 - usually mediagate in lounge

Routers also have a "lease time" setting which reserves an IP address for the last PC which used it for a set period of time ( using the mac address to identify the pc ) - increasing this might have helped prevent the conflicts.

You don't have to use DHCP if it doesn't suit just - manually set a different address for each PC, don't be confused by the talk of Octets just know that the first 3 numbers usually need to be the same in a simple network and only the last one changes - giving you a possible 255 addresses i.e. 192.168.1.0 -192.168.1.254 or often for telecom supplied routers 10.1.1.0 - 10.1.1.254
dugimodo (138)
549263 2007-05-17 03:20:00 Ok here is what I did / was instructed to do by ISP Help Desk:

Control Panel > Network Connections > LAN > Properties > TCP/IP > Properties

(Same for laptop except instead of LAN it is Network Bridge, for some strange reason.)

The only difference between the two pc's is the last part of the IP Address octet: Desktop = 5, Laptop = 10. Yes, I know putting the two digit "10" makes the address 9 numerals and not an octet.

Of course I had to 'tick' {Use the following IP address:} instead of
{Obtain an IP address automatically}

How does the IP address differ from the orignals? Let's see, I wrote it on a piece of paper... found it... the laptop ended with a "4" which is now "10". Trouble is, I cannot find the paper with the desktop IP adr, and the "4" may be from when I went into Run > CMD > ipconfig/release > ipconfig/renew. Anyhow, that is the best I can do.

(edit) I am not sure if anything else under TCP/IP Properties was changed (e.g. DNS Server) as I did not take screenshots before calling the helpdesk.
Strommer (42)
549264 2007-05-17 03:52:00 With IP addresses whilst each group is referred to as an octet, they are entered as Decimal rather than Binary eg .10 instead of .00001010, .255 instead of .11111111 PaulD (232)
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