clear mac address table:
undo mac-address dynamic
realtime interface statistics
display interface-statistics g0/0/24
change path to startup config
startup saved-configuration startup.cfg

clear mac address table:
undo mac-address dynamic
realtime interface statistics
display interface-statistics g0/0/24
change path to startup config
startup saved-configuration startup.cfg

Detailed interface statistics including error counters.
show controllers ethernet-controller
Storm control per interface.
interface FastEthernet0/25port storm-control broadcast threshold rising 500 falling 50 port storm-control multicast threshold rising 500 falling 50

Выглядит это примерно так:
timesync server 88.201.x.x
time timezone 400
time daylight-saving-time
timesync ntp
На 3012F работает успешно.

Наконец я узнал как это сделать:
ctrl+shift+6

arp commands
sh ip arp
interface commands
no interface – Clears all statistics for the specified port
sh interfaces config 1
sh interfaces 1
inactive – shut
no inactive – no shut
pvid – untagged vlan для порта
mac commands
sh mac address-table port 1
sh mac address-table port all
mac-flush [] – очистить таблицу mac адресов
А вообще говно этот зуксель :)