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Why must a MAC address be unique for every NIC produced?
In order for a network device to be able to communicate, the MAC Address it is using must be unique. Duplicate MAC Addresses separated by one or more routers is not a problem since the two devices won’t see each other and will use the router to communicate.
Why does my MAC address have letters?
This address is permanent and is assigned when the device is manufactured. MAC addresses consist of 12 alpha-numeric characters separated by colons (ex: a3:49:2c:03:88:4f ). Only the letters A through F are used, and are not case sensitive so you don’t need to worry about confusing the number 0 with the letter O.
What is the MAC address responsible for?
local identification
A MAC address is responsible for local identification and an IP address for global identification. A MAC address consists of 12 hexadecimal digits, usually grouped into six pairs separated by hyphens.
Is MAC a 48 bit?
A MAC address also known as a media access control address is a unique 48 bit number identifier assigned to network interfaces.
Does MAC address contain character?
Does MAC address contain characters. Explanation: The MAC address itself doesn’t look anything like an IP address. The MAC address is a string of usually six sets of two digits or characters, separated by colons.
What is the range of MAC address?
Standard MAC Group Addresses: 01-80-C2-00-00-10 to 01-80-C2-FF-FF-FF; MAC frames that have a destination MAC address within this range may be relayed by MAC bridges conforming to IEEE 802.1D.
Which is the next bit after the MAC address?
address bit is the next bit following the Individual/Group address bit. The U/L bit indicates whether the MAC address has been universally or locally assigned.
Which is the least significant byte on a MAC address?
“It’s an academic exercise (brought about by people who don’t think in reality IMHO!). Anyway, the least significant bit of the most significant byte (rightmost bit of leftmost byte) on a MAC address is known as the I/G bit for Individual (0) or Group (1) address.
Is the you / L bit universally administered or locally administered?
This bit is also referred to as the U/L bit, short for Universal/Local, which identifies how the address is administered. . If the bit is 0, the address is universally administered, which is why this bit is 0 in all OUIs. If it is 1, the address is locally administered.
When is a MAC address an individual address?
If the bit is set to 0 then it is an Individual MAC address and is a unicast address. If the bit is set to 1 then it is a Group address and is a multicast/broadcast address.