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Accepted
Ashark
Asked: 2020-10-02 05:09:29 +0800 CST

Is there a command to renew dhcp lease for ipmi?

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I have updated config of my dhcp server, so that server should get a new ipmi address. But the server stay at its old address for some time. If I do not want to wait, I want to go to the server and force it to ask for the dhcp address. Is there a special command for that?

I know I can make

ipmitool bmc reset cold

and it works, but just wondering if it is possible without rebooting ipmi.

dhcp ipmi bmc

3 Answers

  1. Best Answer

    I have found a solution to rerequest an address for ipmi (at least I have tested it working on Supermicro server).

    The trick is to set ip address source to static and then back to dhcp. For example:

    ipmitool lan set 1 ipsrc static
ipmitool lan set 1 ipsrc dhcp

    This way is faster than resetting bmc.

    Note: a channel number may be different if you use non Supermicro server.

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  2. Normally change in setting need cold or warm reset for ipmi but conceptually in network You when one network card down and up setting must will be renew. A Trick is set IP addr to static and back to dhcp setting again

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  3. If you don't want to reboot the BMC, you could set it to an invalid static IP and then reset it to DHCP using an OS based tool. How to actually do that depends on the motherboard/BMC and the OS and if special tools are needed by the manufacturer.

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