Mechanism to clear MAC address from Ethernet switch address table to enable network link fail-over across two network segments

This invention relates generally to PC based networks used in business infrastructures that require high availability servers. More particularly, the present invention relates to a mechanism for improving server availability to a client personal computer which includes a file server personal computer having a pair of network interface cards, two Ethernet switches each being connected to a corresponding one of the network interface cards, and uplink ports for interconnecting the two switches. There is provided a communication network and method for enhancing server availability to client PCS which includes two Ethernet switches. Each one of the two Ethernet switches is connected to a corresponding one of the primary and secondary network interface cards in the file server PC. The two Ethernet switches are interconnected together through an uplink port. As a result, redundancy has been effectively and efficiently provided against the failure of either one of the two switches in order to enable link fail-over across two network segments.