verify if the "Chassis MAC Address" has been programed into the EEPROM cookie by issuing the IOS command show diag. Refer to the example below for appropriate output modifiers. Output modifiers are case sensitive.
Example of router with a properly programmed MAC address:
RouterRouter#show diag | include Chassis MAC Address
Chassis MAC Address: 000d.29f8.64d0
http://www.cisco.com/en/US/products/hw/routers/ps282/products_field_notice09186a00801caaad.shtml
