router 1002: problem with MAC address?

[siscoz001]

why the interface of the router crashes when I try to add or delete mac addresses from the list?

[amsodhi]

Could you please share the log file with us, so that we may understand the actual problem?

are you trying to change MAC address using following command?

Router(config-if)# mac-address ieee-address

Can you also tell me the SPA name on which you are trying to change the MAC address?

-Amant