To change, use below command- Cisco-SW(config)#mac address-table aging-time ?Ĭisco-SW(config)#mac address-table aging-time 500 ? You can check using “ show mac address-table aging-time” command and change it as per your requirement. There is another important thing you need to know to manage mac address table, which is aging time. Total Mac Addresses for this criterion: 4 As you see these are two highly distinct concepts. Layer 2) a frame destinated to MAC X please forward through port Y. Basically it means: if you want to switch (i.e. If you want to check mac address for a particular port number, then you can use “ show mac address-table interface ” Cisco-SW#show mac address-table vlan 1 2- A MAC table is a mapping between a MAC address and a port on a switch.
Total Mac Addresses for this criterion: 1 show mac address-table static show mac address-table The output of the show interfaces status command on a 2960 switch shows interface Fa0/1 in a 'disabled' state. 1.show access -lists 2.show arp ethernet 3.show clock 4.show crypto route 5.show dhcp pool 6.show ip arp 7.show banner motd 8.show flash 9.show history 10.show host 11.show interfaces 12.show ip http 13.show l ocation 14.show logging 15.show trunk 16. Cisco-SW#show mac address-table address 0050.7966.6800 Below listed are some of the basic Cisco Show Commands. If you know the specific mac address, then you can use below command to check mac address entry for that address using “ show mac address-table address “. One thing that helps a lot is an ip scanner application that does MAC vendor ID lookups for you. Another thing Ive learned that is very helpful (Im still a noob with Cisco stuff) is tab-completion and using a after the start of a command, such as show. First of all checking the mac address table by using “ show mac address-table“. Also, sh ip arp i 024 will show just the MAC address(es) on that port.). To manage mac address table, we need to know a couple of commands in Cisco Catalyst switches.
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