In the Modified EUI-64 method for generating an IPv6 interface identifier, which step is performed on a device's physical network address to ensure uniqueness?
Prepending 'FE80' to the address and rotating the bits
Adding 'FFFF' at the end without altering any bits
Inserting 'FFFE' between the two halves and flipping the 7th bit of the first byte
Reversing the order of the bytes in the physical address to form the identifier
The Modified EUI-64 process involves splitting the device's 48-bit physical network address into two 24-bit halves and inserting the hexadecimal value 'FFFE' in between to form a 64-bit identifier. Additionally, the 7th bit of the first byte, known as the Universal/Local bit, is inverted (flipped) to indicate a globally unique address. This modification ensures the IPv6 interface identifier is both unique and compliant with IPv6 standards.
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Cisco CCNA 200-301
Network Fundamentals
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