IP addresses keep changing

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d28

I have 5 machines that obtain their IP address from a Linksys BEFSR41
router. The DHCP server is turn on. The IP adresses keep being switch
after the lease time expires and is renewed. For example:

computer 1: 192.168.0.10
computer 2: 192.168.0.11
computer 3: 192.168.0.12
computer 4: 192.168.0.13
computer 5: 192.168.0.14

When the leases are renewed I see this:

computer 1: 192.168.0.14
computer 2: 192.168.0.10
computer 3: 192.168.0.11
computer 4: 192.168.0.12
computer 5: 192.168.0.13

What is happening to make the DHCP server reassing the IPs addresses
after the lease time expires and is renewed. I also keep my machine on
24/7. Maybe a reboot from time to time but, I only taking about 2-3
minutes of down time for a reboot.
 
Hi

I wouldn't worry about this, it seems to be normal behaviour for a
router's DHCP server. Its just that the DHCP server feels 'obliged' to
change the IP addresses when they expire, even if they do not need
changing.

Hope this answers your Q,
Luke
 
I have 5 machines that obtain their IP address from a Linksys BEFSR41
router. The DHCP server is turn on. The IP adresses keep being switch
after the lease time expires and is renewed. For example:

computer 1: 192.168.0.10
computer 2: 192.168.0.11
computer 3: 192.168.0.12
computer 4: 192.168.0.13
computer 5: 192.168.0.14

When the leases are renewed I see this:

computer 1: 192.168.0.14
computer 2: 192.168.0.10
computer 3: 192.168.0.11
computer 4: 192.168.0.12
computer 5: 192.168.0.13

What is happening to make the DHCP server reassing the IPs addresses
after the lease time expires and is renewed. I also keep my machine on
24/7. Maybe a reboot from time to time but, I only taking about 2-3
minutes of down time for a reboot.
Click to expand...

That's normal behavior. A DHCP server can assign any available IP
address to a computer at lease renewal time.

If you want computers to always have the same IP addresses, assign the
addresses manually instead of using DHCP.

Why are the changing addresses a problem for you?
--
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)

Please post any reply as a follow-up message in the news group
for everyone to see. I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.

Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com
 
One of my machine is used to log Internet traffic into and out of the
LAN with a SNMPtrap program.
 
One of my machine is used to log Internet traffic into and out of the
LAN with a SNMPtrap program.
Click to expand...

Then assign that machine a static IP address. Use the same subnet as
the DHCP server, but put it outside the DHCP address pool. For
example, if DHCP assigns addresses 192.168.0.1-192.168.0.50, assign
192.168.0.51 to that machine.

--
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)

Please post any reply as a follow-up message in the news group
for everyone to see. I'm sorry, but I don't answer questions
addressed directly to me in E-mail or news groups.

Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com
 
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