Slow network performance with LAN Servers

60 pts.
Tags:
DHCP
IP address
LAN
Network
This is my problem: Users are complaining that there internet and file downloads from LAN servers are very slow. We have discovered that if we remove the users current ip address from the DHCP pool and force those to get a completely different address the network performance returns to normal. Any ideas?

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As it seems a new DHCP address fixes the issue, are you ip leases set to expire in a short period of time, for example. 2 days?

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  • Snapper70
    What we'd really like to see is output from the ipconfig /all command, for both DHCP and static addressed workstations. Are the mask, gateway(s), DNS, and WINS operating mode (i.e. Hybrid) really the same? Even a short DHCP lease (unless you have it down to hours...) really should have minimal impact. DHCP should be your friend, not your enemy... B-)
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  • Wrobinson
    Is the DHCP server configured to check for duplicate IP addresses on the network before issuing leases? Is this a wired or wireless network? Even if the DHCP lease expires quickly, it in and of itself should not impact network performance from a client perspective. It seems like this may be more so related to DNS. You might try statically mapping reliable DNS for a couple test workstations experiencing this problem to see if that remedies it.
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  • Brooksie18
    Wrobinson The DHCP is configured to check for duplicates and it is a wired network. Thanks for the suggestion I will give it a shot.
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  • Kb3cgj
    Have you tried using a static IP? Is it just a matter of time and changing the ip fixes it? May not be related to DHCP...just a certain amount of time?
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