What is the abbreviation for Burned-In MAC Address? What does BIA stand for? BIA abbreviation stands for Burned-In MAC Address. 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.
MAC addresses are also necessary for a MAC address lookup, which means finding the geographical location of the device via the MAC address. For the purpose of connecting to a device, and recovering its data, or setting up a filtering process, or looking up the location. What is the abbreviation for Burned-In MAC Address? What does BIA stand for? BIA abbreviation stands for Burned-In MAC Address. A media access control address (MAC address) of a device is a unique identifier assigned to a network interface controller (NIC). For communications within a network segment, it is used as a network address for most IEEE 802 network technologies, including Ethernet, Wi-Fi, and Bluetooth.
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Stands for 'Media Access Control Address,' and no, it is not related Apple Macintosh computers. A MAC address is a hardware identification number that uniquely identifies each device on a network. The MAC address is manufactured into every network card, such as an Ethernet card or Wi-Fi card, and therefore cannot be changed.
Because there are millions of networkable devices in existence, and each device needs to have a unique MAC address, there must be a very wide range of possible addresses. For this reason, MAC addresses are made up of six two-digit hexadecimal numbers, separated by colons. For example, an Ethernet card may have a MAC address of 00:0d:83:b1:c0:8e. Fortunately, you do not need to know this address, since it is automatically recognized by most networks.
Address Resolution Protocol (ARP) is a procedure for mapping a dynamic Internet Protocol address (IP address) to a permanent physical machine address in a local area network (LAN). The physical machine address is also known as a Media Access Control or MAC address.
The job of the ARP is essentially to translate 32-bit addresses to 48-bit addresses and vice-versa. This is necessary because in IP Version 4 (IPv4), the most common level of Internet Protocol (IP) in use today, an IP address is 32-bits long, but MAC addresses are 48-bits long.
What Does Mac Address Stand For
ARP works between network layers 2 and 3 of the Open Systems Interconnection model (OSI model). The MAC address exists on layer 2 of the OSI model, the network layer, while the IP address exists on layer 3, the data link layer.
Understanding Mac Address
ARP can also be used for IP over other LAN technologies, such as token ring, fiber distributed data interface (FDDI) and IP over ATM.
In IPv6, which uses 128-bit addresses, ARP has been replaced by the Neighbor Discovery protocol.
How ARP works
When a new computer joins a LAN, it is assigned a unique IP address to use for identification and communication. When an incoming packet destined for a host machine on a particular LAN arrives at a gateway, the gateway asks the ARP program to find a MAC address that matches the IP address. A table called the ARP cache maintains a record of each IP address and its corresponding MAC address.
All operating systems in an IPv4 Ethernet network keep an ARP cache. Every time a host requests a MAC address in order to send a packet to another host in the LAN, it checks its ARP cache to see if the IP to MAC address translation already exists. If it does, then a new ARP request is unnecessary. If the translation does not already exist, then the request for network addresses is sent and ARP is performed.
ARP broadcasts a request packet to all the machines on the LAN and asks if any of the machines know they are using that particular IP address. When a machine recognizes the IP address as its own, it sends a reply so ARP can update the cache for future reference and proceed with the communication.
Host machines that don't know their own IP address can use the Reverse ARP (RARP) protocol for discovery.
An ARP cache size is limited and is periodically cleansed of all entries to free up space; in fact, addresses tend to stay in the cache for only a few minutes. Frequent updates allow other devices in the network to see when a physical host changes their requested IP address. In the cleaning process, unused entries are deleted as well as any unsuccessful attempts to communicate with computers that are not currently powered on.
Proxy ARP
Proxy ARP enables a network proxy to answer ARP queries for IP addresses that are outside the network. This allows packets to be successfully transferred from one subnetwork to another.
What Does Mac Address Stand For
When an ARP inquiry packet is broadcast, the routing table is examined to find which device on the LAN can reach the destination fastest. This device, which is often a router, becomes a gateway for forwarding packets outside the network to their intended destinations.
ARP spoofing and ARP cache poisoning
Any LAN that uses ARP must be wary of ARP spoofing, also referred to as ARP poison routing or ARP cache poisoning. ARP spoofing is a device attack in which a hacker broadcasts false ARP messages over a LAN in order to link an attacker's MAC address with the IP address of a legitimate computer or server within the network. Once a link has been established, the target computer can send frames meant for the original destination to the hacker's computer first as well as any data meant for the legitimate IP address.
ARP spoofing can have serious impacts on enterprises. When used in their simplest form, ARP spoofing attacks can steal sensitive information. However, the attacks can also go beyond this and facilitate other malicious attacks, including:
What Does Mac In Mac Address Stand ForHistory and future of ARPWhat Is My Current Mac Address
ARP was first proposed and discussed in Request for Comments (RFC) 826, published in November of 1982 by David C. Plummer. The problem of address resolution was immediately evident in the early days of the IP protocol suite, because Ethernet quickly became the preferred LAN technology and Ethernet cables required 48-bit addresses.
What Mac Address Stand For
In IPv6, network nodes use a protocol called Neighbor Discovery (ND) to acquire configuration information. Neighbor Discovery operates in the Link Layer (Layer 2) of the OSI model and uses Internet Control Message Protocol (ICMP) version 6 to discover neighboring nodes.
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