IPv 6 Part 2 Unique Local Unicast Addresses

Unique Local Unicast Addresses FC 00: : /7

Bogons n n These addresses are unallocated or reserved and should not be used

More Bogons n These addresses are unallocated or reserved and should not be used

Credits n Many slides were from: n IPv 6: What, Why, How n openwall.

IPv 4 Class A addresses go from 0. 0 – 127. 255. What is

Solution n 0. 0 and 127. 255 in binary: n 00000000 011111111 1111 n

IPv 4 Class D addresses go from 224. 0. 0. 0 – 239. 255.

The ULAs are FC 00: : /7. What is the largest ULA (Unique Local

Solution n FC 00: : /7 n n 1111 1100 0000 … --1 st

The Link-Local addresses are FE 80: : /10. What is the largest Link-Local address?

Solution n FE 80: : /10 n n 1111 1110 1000 0000 … --1

This address range is reserved for documentation and debate: 2001: db 8: : /32.

The Multicast addresses are FF 00: : /8. What is the largest Multicast address?

These are unroutable 6 to 4 addresses: 2002: e 000: : /19. What is

Solution n 2002: e 000: : /19 n n 0010 0000 0010 1110 0000

Slides: 21

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IPv 6 Part 2

Unique Local Unicast Addresses FC 00: : /7

Bogons n n These addresses are unallocated or reserved and should not be used on the Internet These are impossible 6 to 4 addresses (2200: followed by non-routable IPv 4 addresses) n 2002: e 000: : /19 Class D & E 2002: 7 f 00: : /24 Loopback 2002: 0000: : /24 0. 0/8 2002: ff 00: : /24 2002: 0 a 00: : /24 2002: ac 10: : /28 2002: c 0 a 8: : /32

More Bogons n These addresses are unallocated or reserved and should not be used on the Internet n fe 80: : /10 fec 0: : /10 fc 00: : /7 ff 00: : /8 2001: db 8: : /32 3 ffe: : /16

Credits n Many slides were from: n IPv 6: What, Why, How n openwall. com/presentations/IPv 6 n Bogon n The list from Incredible Shrinking Bogon List n http: //www. networkworld. com/community/blog/incr edible-shrinking-bogon-list

i. Clicker Questions

IPv 4 Class A addresses go from 0. 0 – 127. 255. What is the correct specification for this address range? A. B. C. D. E. 0. 0/0 0. 0/1 0. 0/2 0. 0/4 Something else

Solution n 0. 0 and 127. 255 in binary: n 00000000 011111111 1111 n Number of bits that match: 1 n This network is 0. 0/1 n

IPv 4 Class D addresses go from 224. 0. 0. 0 – 239. 255. What is the correct specification for this address range? A. B. C. D. E. 224. 0. 0. 0/2 224. 0. 0. 0/3 224. 0. 0. 0/4 224. 0. 0. 0/5 Something else

The ULAs are FC 00: : /7. What is the largest ULA (Unique Local Address)? A. B. C. D. E. FCFF: FFFF: FFFF: FFFF FDFF: FFFF: FFFF: FFFF FEFF: FFFF: FFFF: FFFF: FFFF: FFFF Something else

Solution n FC 00: : /7 n n 1111 1100 0000 … --1 st Addr 1111 1101 1111 … --Last Addr n Last address is n FDFF: FFFF: FFFF: FFFF

The Link-Local addresses are FE 80: : /10. What is the largest Link-Local address? A. B. C. D. E. FE 8 F: FFFF: FFFF: FFFF FE 9 F: FFFF: FFFF: FFFF FEBF: FFFF: FFFF: FFFF FEFF: FFFF: FFFF: FFFF Something else

Solution n FE 80: : /10 n n 1111 1110 1000 0000 … --1 st Addr 1111 1110 1011 1111 … --Last Addr n Last address is n FEBF: FFFF: FFFF: FFFF

This address range is reserved for documentation and debate: 2001: db 8: : /32. What is the largest address in that range? A. B. C. D. E. 2001: DB 8: 0: 0: ffff: ffff 2001: DB 8: FFFF: FFFF 2001: DB 8 F: FFFF: FFFF 2001: DBF: FFFF: FFFF Something else

The Multicast addresses are FF 00: : /8. What is the largest Multicast address? A. B. C. D. E. FF 00: 0: FFFF: FFFF FF 00: FFFF: FFFF: FFFF FF 0 F: FFFF: FFFF: FFFF: FFFF: FFFF Something else

These are unroutable 6 to 4 addresses: 2002: e 000: : /19. What is the largest address in this range? A. B. C. D. E. 2002: E 000: FFFF: FFFF 2002: E 00 F: FFFF: FFFF 2002: E 0 FF: FFFF: FFFF 2002: EFFF: FFFF: FFFF Something else

Solution n 2002: e 000: : /19 n n 0010 0000 0010 1110 0000 … --1 st 0010 0000 0010 1111 … --Last n Last address is n 2002: FFFF: FFFF: FFFF