HCNA

Switches Switches are one of the most important network equipments of a computer network. It is the main device of a LAN (Local Area Network). In this lesson we will 
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Gratuitous ARP, is the ARP that is used to inform the network about IP to MAC Mappings after a change. It is sent as Broadcast message to all the nodes 
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ARP (Address Resolution Protocol) is a Layer 2 Protocol. Layer 2 uses Physical addresses (MAC addresses) for the communication. Here, ARP Protocol is used to convert a given IP address 
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AAA Configuration is done basically in similar ways in different vendor equipments. But for specific vendors, the configuration commands are a little different than the other. Here, we will focus 
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VRRP Overview VRRP (Virtual Router Redundancy Protocol) is a standard based First Hop Redundancy Protocol. It eliminates the single point of failure by using multiple optional devices. Traffic prefers going 
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