#Cisco switch show mac address on port manual#

FastEthernet0/11 is up, line protocol is up (connected) Hardware is Fast Ethernet, address is aca0.16ef.700b (bia aca0.16ef.700b) If lets say switchport f0/11 is connected to a hub and the hub connect to many end hosts. You have a virtual server host attached to it with multiple virtual machines sharing the NIC. You can however check the mac address burnt in on the port by typing show interface f0/11 for example as below. Could be another managed switch (like a Cisco) or an unmanaged switch (like a consumer Netgear or Linksys switch). Total Mac Addresses for this criterion: 2 You can have more than one MAC address on a switch port if: You have a switch connected to it. You can adjust this timer by using the address-table aging-time command. When there is no longer traffic traversing that port, the mac address will stay learned in the CAM table for a certain period of time. If I show the MAC addresses on the port, both addresses are shown. CAM tables are populated in a Cisco Switch as there is traffic traversing that port. The IP phone is no longer connected to this port. We could use the command show cdp neighbor to find if this port is connected to another switch. This is where knowing your network topology is important. When we configure 'switchport port-security mac-address sticky', switch will learn dynamically the MAC address of the device, then put into TWO places, running-config and mac-address-table as type 'static'. This will either give the exact port the device is plugged into or the port of the next switch in line it is plugged into. I had confusion where mac address goes if I configure 'sticky' address with port security.

show mac-address-table To display the MAC address table, use the show mac-address-table command in privileged EXEC mode. show mac-address-table address .

#Cisco switch show mac address on port manual#

Switchport port-security mac-address sticky 003 vlan voice Cisco ASR 901 Manual Online: Show Mac-Address-Table.

You can use this to only allow certain MAC addresses. IвЂ™ll show you what happens in a bit Besides setting a maximum on the number of MAC addresses we can also use port security to filter MAC addresses. Switchport port-security mac-address sticky 78e7.d1b4.8e14 Once the switch sees another MAC address on the interface it will be in violation and something will happen. Switchport port-security mac-address sticky I have a port on a switch configured with port-security and sticky option.