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Loss of DHCP lease every 24 hours

RogerH1

Before we obtained Verizon FIOS, we had business DSL service via Covad with static IP addresses. We ran our own Internet server and our own Email server. We have an in-house wired network of several computers, and the connection to the DSL modem was via a separate firewall computer running W2K Server and Microsoft ISE.

Now that we no longer need to run in-house Internet or mail servers, we have Verizon FIOS and the WAN connection from the firewall is wired to the FIOS router. We do not use the wireless facility at all. I have changed the IP configuration on the firewall to use an IP address obtained automatically by DHCP. Everything works just fine, except...

Every 24 hours the firewall loses its DHCP IP address lease. The only way to restore service is to restart the firewall PC. This can be a huge inconvenience because (for reasons I do not know) restarting W2K Server can take over 20 minutes.

Does anyone please have a solution that will enable the DHCP-obtained lease on the IP address to remain valid indefinitely? That would be extremely helpful.

Thank you,
Roger Hartop

Comments

viafax999

@RogerH wrote:
Every 24 hours the firewall loses its DHCP IP address lease. The only way to restore service is to restart the firewall PC. This can be a huge inconvenience because (for reasons I do not know) restarting W2K Server can take over 20 minutes.
Does anyone please have a solution that will enable the DHCP-obtained lease on the IP address to remain valid indefinitely? That would be extremely helpful.
Thank you,
Roger Hartop

Your dhcp server is set for 1440 minute lease time. That is the default. However when the lease expires is should just renew.

No matter. just change your server address to be a static address and that should resolve it.

select advanced

select ip address distribution

select network home/office dhcp server

change the dhcp range to exclude some addresses

save the change

go to the server

right mouse click net hood

right mouse click your nic

select properties

hilight tcp/ip

select properties

enter a ip value from the excluded range

enter some dns servers, either the ones that are getting assigned by the router via dhcp or any other that you prefer.

jumpin68ny

You could always hard code the ip address into your pc. If you do this use an address higher up. Your configuration will be as follows:

IP: 192.168.1.50

Subnet Mask: 255.255.255.0

Default Gateway: 192.168.1.1

DNS Server: 192.168.1.1

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