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Convert ipv6 to mac address3/29/2024 It will be added on to the network prefix to make the complete IPv6 address. It becomes the host portion of a /64 IPv6 address. This is the interface identifier or interface ID, and it’s 64 bits. Our MAC address becomes: 1034 56FF FE78 90AB We convert this binary value back to hexadecimal (a 4-bit character), a hexadecimal 0. We convert it to 0, we get 0000, which is the (new) value of the second hexadecimal character of the modified MAC address written in binary. The ‘1’ in the first quartet (1234) is bits 1, 2, 3, and 4. So the 7th bit is the 3rd bit of the hexadecimal 2 in the modified MAC address 1234 56FF FE78 90AB. Recall, each hexadecimal digit is 4 bits. >The next step is to insert hexadecimal FFFE in the middle. >The first step is to divide the MAC address of the interface in half.ġ234 56 | 78 90AB (the bar “|” is not part of the MAC address, it just shows where the address splits in half) Here is our MAC address example: 1234 5678 90AB. That said, let’s see how it’s done – how an IPv6 address can be generated using the EUI-64 method. When you actually configure an IPv6 address on a router interface using EUI-64, the router will automatically do it for you using the specified prefix and the router’s own interface MAC address. The term modified EUI-64 is more technically accurate because the original EUI-64 specification did not include the step of inverting the 7th bit of the first quartet in the modified MAC address as it is being converted into a 64-bit interface identifier, as we will see in a minute. The technically correct term is modified EUI-64, but just EUI-64 is commonly used. An IPv6 address is 128 bits, so /64 means 64 bits are the network portion and 64 bits are the host portion of the address. This interface identifier can then become the host portion of a /64 IPv6 address. The EUI-64 method converts a 48-bit MAC address into a 64-bit interface identifier. ![]() An IPv6 interface identifier is a unique identifier for a network interface card (NIC).ĮUI-64 is a method of automatically generating an IPv6 address using a specified prefix and a MAC address. Configuring IPv6 addresses using EUI-64ĮUI-64 (Extended Unique Identifier) is a method used to generate a 64-bit interface identifier for an IPv6 host. ![]() You may also be interested in CCNA 200-301 study notes. EUI-64 configuration (configuring IPv6 addresses).Configuring IPv6 addresses using EUI-64.This post constitutes Issue 26 of my CCNA 200-301 study notes. In Part 3, IPv6 static route configuration, we cover 1) the NDP (neighbor discovery protocol) functions of address resolution/neighbor discovery using NS/NA messages, router discovery using RS/RA messages, SLAAC, and DAD, 2) how to configure an IPv6 address using SLAAC, 3) how to configure IPv6 static routes (directly attached, recursive, and fully specified), and 4) how to configure IPv6 static routing: default, network, host, and floating static. In this lesson we go more in depth and we learn about other IPv6 address types, specifically, unique local, multicast, anycast, unspecified, and loopback. In IPv6 Part 1 we began discussing global unicast and link local IPv6 addresses. In this lesson, Configuring IPv6 addresses using EUI-64, we learn one more way to configure an IPv6 address on a router interface, using a method called EUI-64. ![]() In Part 1, Introduction to IPv6 for the CCNA, we learned how to do some basic IPv6 router configurations – how to enable IPv6 routing on routers, and how to configure an IPv6 address on the router interface. In this lesson, Configuring IPv6 addresses using EUI-64, we continue our studies of IPv6 for the CCNA. This is Part 2 of 3 of my IPv6 study notes for the CCNA.
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