![]() There can only be a single port for a MAC address. The table is dynamic and when a frame with a source MAC address comes into a switch the table is updated to reflect that the device with that MAC address is out that port. The dynamic entries in the MAC address table will time out after a while. ![]() Why does the MAC address table time out on switches?. ![]() The switch will automtically have static entries for itself. Manually putting an entry in the table bypasses all of that. How many ports can a MAC address have in a table?.On the 4/5/6x00 devices, there are 1024 mac addresses assigned to the upervisor (1 or more for the switch, 1000 for spanning tree (PVST, each instance has its ' own mac address)). On some manufactures switches, they use 1 mac address for all functions, Cisco does not. How many MAC addresses are there on a Cisco switch?. ![]() ![]()
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