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Why are multiple MAC addresses associated with the same port?
A switch can have multiple MAC addresses associated with a single port. This is common when the switch is connected to another switch. The switch will have a separate MAC address table entry for each frame received with a different source MAC address.
What happens when two devices have same MAC address?
If two devices have the same MAC Address (which occurs more often than network administrators would like), neither computer can communicate properly. Duplicate MAC Addresses separated by one or more routers is not a problem since the two devices won’t see each other and will use the router to communicate.
Do different Ethernet ports have different MAC addresses?
Switches make traffic forwarding decisions based on the 48-bit media access control (MAC) addresses used in LAN standards, including Ethernet. Like all Ethernet interfaces, every port on a switch has a unique factory-assigned MAC address.
Does each interface has a MAC address?
Each network interface, whether wired or wireless, is a unique device and as such will have a unique MAC address. A MAC address is an absolute necessity for communication on the data link layer of a network segment (basically every network wired/wireless).
Are there multiple MAC addresses on a single port?
I’m trying to map our network and I stumbled into this issue where I’m seeing three MAC address connected to a single port. I checked it and it’s not connected to another switch. It’s connected to a Host PC and from the looks of it it’s running both LINUX and WINDOWS. Description . . . . . . . . . . . : Realtek RTL8139C+ Fast Ethernet NIC #2
How to show MAC address table in Cisco?
Total Mac Addresses for this criterion: 3 SW6#show mac address-table interface fa0/14 Mac Address Table Vlan Mac Address Type Ports 1 0018.7330.7e08 DYNAMIC Fa0/14 1 aaaa.aaaa.aaaa DYNAMIC Fa0/14 <<<<<<<<<<< dynamic???
How to get MAC address table to move?
You could enable the same by issuing the command “mac-address-table notification mac-move” or “mac address-table notification mac-move” in the global configuration mode. Either of the commands will be supported as per the switch platform. 2.
How to show MAC address table in VLAN?
Vlan Mac Address Type Ports 1 0018.7330.7e08 DYNAMIC Fa0/14 1 0018.7330.7e0a DYNAMIC Fa0/15 <<<<<<<<<<< OK, SW7 interfaces’ MAC addresses Total Mac Addresses for this criterion: 2 My first question is, what happens here?