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Dynamic Host Configuration Protocol (DHCP)
Managing and Troubleshooting the DHCP Client
If you see that the interface has received a configuration that it should not
have, such as a default route, you will have to restart the DHCP client. Follow
these steps:
1. Move to the configuration mode context for the DHCP client interface:
ProCurve(config)# interface frame-relay 1.101
2. To turn off the DHCP client, enter:
ProCurve(config-eth 0/1)# no ip address dhcp
This command disables the DHCP client on the interface, which then
immediately sends a message to release its DHCP-assigned address.
3. Re-enter the ip address dhcp command with the keywords for preventing
the interface from taking optional configurations. For example, you might
enter:
ProCurve(config-eth 0/1)# ip add dhcp no-default-route no-domain-name no-
name-servers
Releasing and Renewing Dynamic Addresses
You can force an interface to give up the address it has received from a server.
Move to the interface configuration mode context and enter:
ProCurve(config-eth 0/1)# ip dhcp release
Note Take care when releasing an address; you could inadvertently lock yourself
out of the router. If you are managing the ProCurve Secure Router with a Telnet
or Web connection through that interface, your session will be immediately
terminated. You will not be able to reconnect until a DHCP server issues
another IP address to the interface.
You should then force the interface to request a new address:
ProCurve(config-eth 0/1)# ip dhcp renew
Alternatively, you can configure a static address on the interface.
You should only have to manually force the interface to renew its lease after
releasing an address. The DHCP client will periodically request to keep its
address so that data flow is not disrupted.
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