![]() ![]() As typically represented, MAC addresses are recognizable as six groups of two hexadecimal digits, separated by hyphens, colons, or without a separator. Within the Open Systems Interconnection (OSI) network model, MAC addresses are used in the medium access control protocol sublayer of the data link layer. This use is common in most IEEE 802 networking technologies, including Ethernet, Wi-Fi, and Bluetooth. It then forwards them to the appropriate device inside your network.Label of a UMTS router with MAC addresses for LAN and WLAN modulesĪ media access control address ( MAC address) is a unique identifier assigned to a network interface controller (NIC) for use as a network address in communications within a network segment. Responses from internet-based services such as mail servers or websites are received by the router. Everything else talks to your router and the router brokers connections out to the internet. Your router is the only part of your network that is actually connected to the internet. The traffic from each device goes to the router, the router determines which device the data is going to, and sends it on to the target device. It directs network traffic from device to device. Your router is the traffic controller for your network. Most are happy to do their own thing and operate in isolation but if you have a printer, for example, or a network-attached storage device, then some of your other devices will want to be able to connect to them.Īll of your network-enabled appliances connect to your router over Wi-Fi or via a network cable. Because they're on the same network, these devices can talk to one another if they need to.
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