We have talked about mac addresses used in multicast world and the 32 same ip addresses that is used with the same mac addresses. I think the findstr command is what I need, but I dont know how to use it. In this lesson, we have learned an important lesson of multicast technology. I just need to get the Mac address of a givin IP address on its own. For another Multicast MAC, there are another 32 ip addresses certainly. This is tru for all these 32 ip addresses. These Multicast IP Addresses that can be used with this created MAC Address are given below:įor example like 224.255.0.1 multicast ip address, 230.127.0.1, 232.255.0.1, 238.255.0.1 ip addresses will also use the same MAC that we have produced. Here, with the 5th, 6th, 7th, 8th and 9th bits, 32 different Multicast IP Addresses can be written. So, 2^5, you can create 32 different IP address with this changable area.įor our example, the Multicast IP addresses that share the same Multicast MAC Address are showed below. Announcement: We just launched Online Math Tools a. Just paste your IP address in the form below, press the Convert to Hex button, and youll get an IP in the hexadecimal base. And the remainning 5 bits in the middle can be any value. Worlds simplest online IP to hexadecimal converter for web developers and programmers. Using 'arp,' you can in fact determine the MAC address of some computers from their IP address. In Windows, Linux and other operating systems, the command line utility 'arp' shows this information. The last 23 bits are used for Multicast MAC Address. Most computers allow you to see the list of IP and MAC addresses that ARP has collected there. MAC addresses are available from 00-00-00-00-00-00 through FF-FF-FF-FF-FF-FF. A MAC address consists of 12 hexadecimal digits, usually grouped into six pairs separated by hyphens. Convert the octet back into hexadecimal from binary. A MAC address is responsible for local identification and an IP address for global identification. (The seventh bit will be 0, make it a 1). Note: The MAC address 11:22:33:44:55:66 will be used for the following examples. It is 25 bits.Ĥ) Lastly, we will combine the fixed 25 bits with the last 23 bits of the multicast ip to create our Multicat MAC Address :Ġ0000001:00000000:01011110:0 1111111.00000000.00000001 = 01:00:5e:7F:00:01įor Multicast IP Address, the first 4 bits are fixed, these first four bits are 1110. Take the MAC address and convert the first octet from hexadecimal into binary. 3) We will take the fixed part of the Multicast MACs like below and we will write it in binary format.
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