Lecture 2 IPv6 addressing-v3.pdf

Represented with a double colon otherwise the address

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represented with a double colon; otherwise the address would be ambiguous Incorrect address 20001::ABCD::1234 It could be interpreted as: 2001:0000:0000:0000:0000:ABCD:0000:1234 2001:0000:0000:0000:ABCD:0000:0000:1234 2001:0000:0000:ABCD:0000:0000:0000:1234 2001:0000:ABCD:0000:0000:0000:0000:1234 RFC 5952 suggests that the double colon should represent the longest string of 0s CAB440 Network and Systems Administration 12
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13 CAB440 Network and Systems Administration Which of the following is NOT a valid IPv6 address? (a) 2002:83b5:1a11::83b5:1a11 (b) 2002:c058:6301::c058:6301 (c) ::1234 (d) ABCD::2111::2234
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IPv6 address representation rules Combining Rule 1 and Rule 2 Combining both rules can reduce even further Format IPv6 address Preferred 0000:0000:0000:0000: 0000:0000:0000:0000 No leading 0s 0:0:0:0:0:0:0:0 (::) All-0 segments :: Preferred 0000:0000:0000:0000: 0000:0000:0000:0001 No leading 0s 0:0:0:0:0:0:0:1 (::) All-0 segments :: 1 Preferred FF02:0000:0000:0000: 0000:0000:0000:0001 No leading 0s FF02:0:0:0:0:0:0:0001 (::) All-0 segments FF02 :: 1 CAB440 Network and Systems Administration 14
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IPv6 address representation rules Combining Rule 1 and Rule 2 Format IPv6 address Preferred FC00:0001:A000:0B00: 0000:0527:0127:00AB No leading 0s FC00:1:A000:B00 : 0 : 527:127:AB (::) All-0 segments FC00:1:A000:B00 :: 527:127:AB Preferred 2001:0DB8:1111:000A:00B0:0000:9000:0200 No leading 0s (::) All-0 segments Preferred 2001:0000:0000:0000:ABCD:0000:0000:1234 No leading 0s (::) All-0 segments CAB440 Network and Systems Administration 15
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IPv6 Preferred and compressed format Preferred IPv6 Format Compressed IPv6 format 0000:0000:0000:0000: 0000:0000:0000:0000 :: 0000:0000:0000:0000: 0000:0000:0000:0001 ::1 FF02:0000:0000:0000: 0000:0000:0000:0001 FF02 :: 1 FC00:0001:A000:0B00: 0000:0527:0127:00AB FC00:1:A000:B00 :: 527:127:AB 2001:0DB8:1111:000A:00B0:0000:9000:0200 2001:0DB8:1111:A:B0::9000:200 2001:0000:0000:0000:ABCD:0000:0000:1234 2001::ABCD:0:0:1234 2001:0DB8:AAAA:0001:0000:0000:0000:0100 2001:0DB8:AAAA:1::100 CAB440 Network and Systems Administration 16
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