Author Topic: MAC address  (Read 901 times)

daisyab

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MAC address
« on: May 18, 2014, 05:31:32 AM »
     

If a switch receives a frame and the source MAC address is not in the MAC address table but the destination address is, what will the switch do with the frame?

ravinder.k

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Re: MAC address
« Reply #1 on: June 04, 2014, 06:42:28 PM »
Whether you work in a wired network office or a wireless one, one thing is common for both environments: It takes both network software and hardware (cables, routers, etc.) to transfer data from your computer to another—or from a computer thousands of miles away to yours.

And in the end, to get the data you want right to YOU, it comes down to addresses.

So not surprisingly, along with an IP address (which is networks software), there's also a hardware address. Typically it is tied to a key connection device in your computer called the network interface card, or NIC. The NIC is essentially a computer circuit card that makes it possible for your computer to connect to a network.

An NIC turns data into an electrical signal that can be transmitted over the network.

pradeep

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Re: MAC address
« Reply #2 on: December 29, 2014, 11:53:32 AM »
Hello,

the frame will have a destination MAC address.  The gateway for the LAN, where the packet enters from, will perform the ARP to find the MAC address of the destination host and address the frame accordingly.
Its like the opposite of a packet from your host going to a destination outside your network.  The host does not know the destination MAC address for the frame, only that the destination is on another network.  Therefore, it addresses the frame (layer 2) to it's default gateway's MAC so the gateway can handle the packet accordingly.

Thanks,
Pradeep

santhoshidatasoft

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Re: MAC address
« Reply #3 on: January 05, 2015, 10:59:18 PM »
A media access control address (MAC address) is a unique identifier assigned to network interfaces for communications on the physical network segment. MAC addresses are used as a network address for most IEEE 802 network technologies, including Ethernet and WiFi. Logically, MAC addresses are used in the media access control protocol sublayer of the OSI reference model.

MAC addresses are most often assigned by the manufacturer of a network interface controller (NIC) and are stored in its hardware, such as the card's read-only memory or some other firmware mechanism. If assigned by the manufacturer, a MAC address usually encodes the manufacturer's registered identification number and may be referred to as the burned-in address (BIA). It may also be known as an Ethernet hardware address (EHA), hardware address or physical address. This can be contrasted to a programmed address, where the host device issues commands to the NIC to use an arbitrary address.

Pavithra M

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Re: MAC address
« Reply #4 on: May 22, 2015, 07:40:48 PM »
A media access control address (MAC address) is a unique identifier assigned to network interfaces for communications on the physical network segment. MAC addresses are used as a network address for most IEEE 802 network technologies, including Ethernet and WiFi.

lexan

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Re: MAC address
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