May 4, 2014 - How To Find The Wi-Fi MAC Address Of A Samsung Galaxy Phone And Samsung Galaxy 10.1 Tab Samsung Galaxy S2, S3, S4, S5, S6, S7, S8.

The Question SuperUser reader Vishnu Vivek is curious about MAC addresses and their function: I understand that IP addresses are hierarchical, so that routers throughout the internet know which direction to forward a packet. With MAC addresses, there is no hierarchy, and thus packet forwarding would not be possible. So, MAC addresses are not used for packet transfer.

I don’t think it sits there for no reason. So my question is, where exactly does a MAC address come into play during a packet transfer? Where indeed? What is the specific function of the MAC address? The Answer SuperUser contributor Werner Henze offers some insight into the function of the MAC address: What are MAC addresses used for? MAC addresses are the low level basics that make your ethernet based network work. Network cards each have a unique MAC address.

Samsung wisenet for mac. Packets that are sent on the ethernet are always coming from a MAC address and sent to a MAC address. If a network adapter is receiving a packet, it is comparing the packet’s destination MAC address to the adapter’s own MAC address. If the addresses match, the packet is processed, otherwise it is discarded.

There are special MAC addresses, one for example is ff:ff:ff:ff:ff:ff, which is the broadcast address and addresses every network adapter in the network. How do IP addresses and MAC addresses work together? IP is a protocol that is used on a layer above ethernet. Another protocol for example would be IPX. When your computer wants to send a packet to some IP address x.x.x.x, then the first check is if the destination address is in the same IP network as the computer itself.

If x.x.x.x is in the same network, then the destination IP can be reached directly, otherwise the packet needs to be sent to the configured router. Up to now things seem to have gotten worse, because now we have two IP addresses: one is the original IP packet’s target address, the other is the IP of the device to which we should send the packet (the next hop, either the final destination or the router). Since ethernet uses MAC addresses, the sender needs to get the MAC address of the next hop.

There is a special protocol ARP (address resolution protocol) that is used for that. Once the sender has retrieved the MAC address of the next hop, he writes that target MAC address into the packet and sends the packet. How does ARP work? ARP itself is a protocol above ethernet, like IP or IPX. When a device wants to know the MAC address for a given IP address, it sends a packet to the broadcast MAC address asking “Who has IP address y.y.y.y?” All devices receive that packet, but only the one with the IP address y.y.y.y will respond with a packet “It’s me.” The asking device receives the answer and now knows that the source MAC address is the right MAC address to use. Of course the result will be cached, so the device does not need to resolve the MAC address every time. Routing I almost forgot to mention: there is no routing based on MAC addresses. How to remove page number in word 2011 for mac.