Recieve loopback address

[Shera]

When a laptop has been removed from the docking station
and the takes it off the network for a noght or so, we
have a problem where if he comes back the next morning,
they are unable to gain a valid IP address. If you wait
long enough, you'll get one. Also, if you run an
ipconfig /release & renew command, you'll get one.

Does anyone know why this oocrrus? I am being told it is
a timing issue and that's tru because if you wait long
enough (a few minutes) you'll get on the network but it
seems like something else is going on..

HELP!!!

 

[null]

When a laptop has been removed from the docking station
and the takes it off the network for a noght or so, we
have a problem where if he comes back the next morning,
they are unable to gain a valid IP address. If you wait
long enough, you'll get one. Also, if you run an
ipconfig /release & renew command, you'll get one.

Does anyone know why this oocrrus? I am being told it is
a timing issue and that's tru because if you wait long
enough (a few minutes) you'll get on the network but it
seems like something else is going on..

HELP!!!

A few minutes seems a bit long to obtain or renew an IP address from a
DHCP server. However, there is much more to getting an IP address from
DHCP than just saying to the server 'Give me one!'

I'm not going to go into details, as it's not really necessary, but I'll
give you some idea of what goes on:

Among other things, the requesting PC has to 'find' the DHCP server, and
then ask to renew the IP address it already has, if it meets certain
criteria. If it can't use the IP address it currently has, it'll then
request a new one; the DHCP server will first poll the network to see if
anyone is using the IP address that it desires to hand out - if no one
has it, then it will give it to the requesting PC.

All of this takes time. A few minutes is a fair amount of time for this
process, but if the network or server is busy it might very well take a
few minutes.