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lobi
Asked: 2015-02-27 10:29:41 +0800 CST

Can't find IPMI mac address

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The MAC address listed under ipmitool lan print seems to be incorrect, since there is no entry in the arp cache for the set ip address, 10.224.242.121:

# arp 10.224.242.121 10.224.242.121 (10.224.242.121) -- no entry

Obviously the ipmi interface cannot establish layer 2 connectivty because of this. After a good amount of googling, I can't figure out how to find the correct IPMI mac address....

I am running centos6.5 on a supermicro server. Any help would be greatly appreciated.

mac-address

1 Answers

  1. I find it very strange that the MAC reported by ipmitool is not correct. To double check, you can do the following:

    Set the BMC ipsrc to static with IP 0.0.0.0

    ipmitool lan set 1 ipsrc static
ipmitool lan set 1 ipaddr 0.0.0.0

    Fire up a packet analyzer on your machine connected to the same subnetwork (e.g. Wireshark, tcpdump).

    Set the BMC ipsrc to dhcp, this will trigger a DHCP discover.

    ipmitool lan set 1 ipsrc dhcp

    Verify with the packet analyzer the source MAC address of the DHCP discover packet broadcasted on the network by the BMC.

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