COMPUTER NETWORKING

NETWORK LAYER

NEXT GENERATION IP

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which bit gets flipped in Cisco EUI generation?
A
1
B
4
C
7
D
10
Explanation: 

Detailed explanation-1: -Also, the 7th Bit in the first byte is flipped to a binary 1 (if the 7th bit is set to 0 it means that the MAC address is a burned-in MAC address). When this is done, the interface ID is commonly called the modified extended unique identifier 64 (EUI-64).

Detailed explanation-2: -We take the MAC address and split it into two pieces. We insert “FFFE” in between the two pieces so that we have a 64 bit value. We invert the 7th bit of the interface ID.

Detailed explanation-3: -The IPv6 EUI-64 format address is obtained through the 48-bit MAC address. The MAC address is first separated into two 24-bits, with one being OUI (Organizationally Unique Identifier) and the other being NIC specific. The 16-bit 0xFFFE is then inserted between these two 24-bits for the 64-bit EUI address.

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