The address typically includes a manufacturer's organizationally unique identifier (OUI). Many network interfaces, however, support changing their MAC address. Each address can be stored in hardware, such as the card's read-only memory, or by a firmware mechanism.

MAC addresses are primarily assigned by device manufacturers, and are therefore often referred to as the burned-in address, or as an Ethernet hardware address, hardware address, or physical address. 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. ARP cache maintains a list of IP addresses and matching Mac addresses, and is.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. IP has a built-in feature Address Resolution Protocol (ARP) that translates IP address to Mac address, and cannot do it vice-versa. Unfortunately there is not any software available to do this, but it is possible to convert Mac address to IP address the other way.Finding IPs with the DHCP Server The Dynamic Host Configuration Protocol (DHCP) is the network protocol used by TCP/IP to dynamically allocate IP addresses and other characteristics to devices in a network. The output will show a line with the IP address followed by the MAC address, the interface, and the allocation type (dynamic/static).

It helps to Ping the subnet's broadcast address (e.g.

As you can see, the 'sh arp' or 'sh ip arp' commands also give you the MAC addresses, so essentially the 'sh mac add' is only to get the port in which the device is connected.

Re: how to convert MAC address to ip address Hi, The only way to find that out is to inspect the ARP tables after generating some traffic (e.g.

Finally, there is a Mac OS X GUI app called IP Scanner from 10base-t-interactive Software that will show you all the devices on your network and also reveal the MAC address.

Convert mac address