Question

1. Find the interface identifier if the physical address in the EUI is (F3-99-44-EF-27-14-7A-B3)16 using the...

1. Find the interface identifier if the physical address in the EUI is (F3-99-44-EF-27-14-7A-B3)16 using the format we defined for Ethernet addresses.

2. Find the interface identifier if the Ethernet physical address is (F1-89-35-17-7B-93)16 using the format we defined for Ethernet addresses.

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Answer #1

Answer 1
***********

HEX: F39944147AB3
BIN: 1111 0011 1001 1001 0100 0100 0001 0100 0111 1010 1011 0011

We need to flip the seventh bit:

BIN: 1111 0001 1001 1001 0100 0100 0001 0100 0111 1010 1011 0011

HEX: F19944147AB3

HEX: F199:4414:7AB3

So, the interface ID is now F199:4414:7AB3

Answer 2
***********

HEX: F18935177B93
BIN: 1111 0001 1000 1001 0011 0101 0001 0111 0111 1011 1001 0011

We need to flip the seventh bit:

BIN: 1111 0011 1000 1001 0011 0101 0001 0111 0111 1011 1001 0011

HEX: F39944147AB3

HEX: F399:4414:7AB3

So, the interface ID is now F399:4414:7AB3

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