H3C S9500 Series Operation Manual page 49

Operation Manual – DHCP
H3C S9500 Series Routing Switches
III. Solution
1) Disconnect the client's network cable and ping the client's IP address on another
host with a long timeout time to check whether there is a host using the same IP
address.
2) If a ping response is received, the IP address has been manually configured on
the host. Execute the dhcp server forbidden-ip command on the DHCP server to
exclude the IP address from dynamic allocation.
3) Connect the client's network cable. Release the IP address and obtain another
one on the client. Take WINDOW XP as an example, run cmd to enter into DOS
window. Type ipconfig/release to relinquish the IP address and then
ipconfig/renew to obtain another IP address.
Chapter 2 DHCP Server Configuration
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