Re: IP conflict in my network
- From: Andrew Rossmann <andysnewsreply@xxxxxxxxxxxxxxxxxxx>
- Date: Wed, 6 Dec 2006 16:17:46 -0600
In article <1165374705.291574.32470@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
mailcmw@xxxxxxxxx says...
I dont know if i fully agree with the lease running out while the
machines are turned off
If a lease was to run out while a pc was turned off and then
consequently this lease was given to another computer, the original
computer when it is turned on should be requesting a new lease as it
knows that its lease has run out
Below is a url to dhcp guide
http://www.tcpipguide.com/free/t_DHCPLeasesLeaseLengthPoliciesandManagement-3.htm
It is still obviously a good idea to work out a good lease time that
suits your needs but the dhcp server should handle the machines leases
running out while turned off without problems
I would be looking to see that you dont have any pcs or printers or any
other devices with static ip addresses and, if you are still having
problems i would look at your pool of addresses and see if it is big
enough for all your pcs and devices
Also I would check to see that you dont have 2 devices setup for dhcp,
ie if you have a broadband modem/router it would most likely be by
default setup for dhcp.
There can be weird issues with Windows and DHCP.
I work from home, and use a software VPN to connect to work. At night, I
turn off the computer and the router (Linksys BEFSX41, the VPN on it is
no longer used) and the modem (Motorola 5120). The router is set up with
standard DHCP, using 192.168.3.xxx. The usual .1.xxx and .2.xxx
addresses are set up for my backup DSL connection which has it's own
modem and router (an identical Linksys BEFX41, but configured
differently due to issues trying to communicate with the Siemens 4100
DSL modem). I don't use both simultaneously, but wanted to keep the
routers separate.
For weeks, I had issues where the computer (running Win2K) would sit at
'Preparing Network connections' for as long as 2-3 minutes. I originally
though this was due to it being part of a corporate domain and trying to
look for something.
Also, every once in awhile, my VPN would drop and pop up the VPN login.
A clue came when I looked at the VPN log, and saw a note that it had
dropped because the IP address had changed to 0.0.0.0. I also realized
that this once happened exactly 24 hours after having turned on the
computer at an odd time one day. The router is set to a standard 24 hour
lease.
I changed the computer to use a fixed IP (outside the DHCP range), and
all my problems disappeared. It boots up fast and hasn't dropped the
VPN.
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- References:
- IP conflict in my network
- From: suad
- Re: IP conflict in my network
- From: cmw
- IP conflict in my network
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