slowness in getting DHCP IP address

  • Thread starter Thread starter Guest
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Guest

Hi all,
I need advice and guide to troubleshoot the problem in slowness in getting
DHCP IP address. Sometime it can take more then 10 minutes for the system to
be able to renew the IP address.

Any advice on how to start the troubleshooting?

Many thanks in advance.
 
Few questions......

What OS and SP levels are the DHCP server and clients?

Are the DHCP clients and server on the same LAN, or are requests relayed
over a WAN link?

Do the clients have any firewalls installed?

I'm assuming that you use switchs, do you have PortFast enabled?

Any errors in the DHCP server event logs?

I've seen DHCP sometimes take a while to assign addresses, normally due to
PortFast not being enabled, never 10 minutes though, it's a pretty efficient
protocol.
 
Hi Andrew,

Thanks for the reply and sorry for the slow respond.

1) DHCP Server running on Windows 2000 SP4 and most of the clients on
Windows XP.
2)No clients firewall install.
3)Yes. Portfast was enable
4)No error in dhcp log

Here is some of the observation:
1) The new systems are not yet join to domain.
2) When I first connect to network after login locally, it's taking about
300-500 send packets (vary) before the client able to get the ip address.
3) But in DHCP, I notice the IP address was assigned to the client right
after i connect the system to network.

I have no idea where is the area I should narrow down on the
troubleshooting. Any help and advice....please advice.

Thanks in advance.
 
Hi Andrew,

Thanks for your help. I managed to solve the problem. There is a
misconfiguration on the coreswitch that causing NAK reply from misconfigure
subnet before the client actaully accept the ACK reply from correct subnet.

Thanks to all.
 
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