On 04/13/12 1:14 AM, sri wrote: > BMC MAC Address: E4:1F:13:77:16:61 ======> This is the MAC address my > SW is showing on the SW port connected to my eth0 > The BMC ("Baseboard Management Controller" or something like that) is another name for a management processor, similar to the IPMI I mentioned. This can be used for monitoring the system status, lights out management like remote power off and on (BMC is powered even when the server is shut down), etc. I would recommend you learn how to use it and not disable it. The BMC can also be used for remote system installation and such. Have you consulted the hardware documentation on this system yet? for instance, here's the BMC/IPMI software for various Dell servers http://support.dell.com/support/edocs/software/smbmcmu/1.2/en/ug/bmcugc0d.htm here's an overview of IPMI/BMC systems http://en.wikipedia.org/wiki/Intelligent_Platform_Management_Interface many servers have a hardware option to move the BMC/IPMI to a dedicated ethernet port, you'll need to consult with the system vendor to see if this option is available as a field upgrade for your server. -- john r pierce N 37, W 122 santa cruz ca mid-left coast