DHCP client lost his IP after 5 min.

Hi,

we have a Proliant 800 with 3 NIC's and 2000 Server with ISA 2000 & DHCP.
The first NIC has a static IP adres and connected with the LAN (192.168.0.x)
and the other NIC (first 1 then only 2) get his IP adres from the DSL router
(10.0.0.150 and up).

When the server starts, the first 5 minutes the internet-nic get his
ip-adres from the dsl-router (dhcp) and the server and clients are able to
browse the internet.
But after 5-10 mins. the NIC lost his ip-adres and get ip 169....(microsoft
no-dhcp).
Then connection with internet is broken of course.
This happens to both NIC's (one at a time).

Another old server which consist the same and Proxy 2.0 instead of ISA2000
does not have that problem (same type NIC for internet).

Any suggestions? (no ipconfig /renew does not help)
Is it allowed for a DHCP server to get a ip-adres from a dhcp-router for one
NIC?

Rene Wennekes

there's no place like 127.0.0.1

Is your win 2000 server an AD?
IF yes, then the problem could be because win 2000 not allowing
unauthorised DHCP to work. You can authorise the other DHCP
running on the router.
Start DHCP Manager, click on Action menu and select Manage
Autorised Servers.
Click on Authorise, and enter the IP address of the DSL Router
which runs the DHCP.

Sharad


"Rene Wennekes" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Hi,
>
> we have a Proliant 800 with 3 NIC's and 2000 Server with ISA 2000 & DHCP.
> The first NIC has a static IP adres and connected with the LAN
(192.168.0.x)
> and the other NIC (first 1 then only 2) get his IP adres from the DSL
router
> (10.0.0.150 and up).
>
> When the server starts, the first 5 minutes the internet-nic get his
> ip-adres from the dsl-router (dhcp) and the server and clients are able to
> browse the internet.
> But after 5-10 mins. the NIC lost his ip-adres and get ip
169....(microsoft
> no-dhcp).
> Then connection with internet is broken of course.
> This happens to both NIC's (one at a time).
>
> Another old server which consist the same and Proxy 2.0 instead of ISA2000
> does not have that problem (same type NIC for internet).
>
> Any suggestions? (no ipconfig /renew does not help)
> Is it allowed for a DHCP server to get a ip-adres from a dhcp-router for
one
> NIC?
>
> Rene Wennekes
>
> there's no place like 127.0.0.1
>
>
>