57. Introduction and basic configuration of IPv6
1. Introduction to IPv6
IPv6 addresses are 128 bits long, with a total of 2 ^ 128 addresses.
IPv6 address format: x:x:x:x:x:x:x:x, where x is hexadecimal.
IPv6 simplification:
2001:0DB8:010F:0001:0000:0000:0000:0D0C removes leading 0
2001: DB8:10F: 1: 0: 0: 0: D0C multiple consecutive zeros can be replaced by::
2001: DB8:10F: 1:: D0C
2001:0DB8:0000:0000:FFFF:0000:0000:0D0C
Can be expressed as
2001:DB8::FFFF:0:0:0D0C or 2001:0DB8:0:00:FFFF::0D0C
But it cannot be expressed as
2001:0DB8::FFFF::0D0C
Because I don't know how many zeros are represented by the two:: respectively.
Example:
FF02:0:0:0:0:0:0:1 FF02::1
FF15:0:0:0:0:0:1:C001 FF15::1:C001
0:0:0:0:0:0:0:1:: 1
0:0:0:0:0:0:0:0::
IPv6 accesses web pages by address format: http://[2001:DF0:1003::F]:8080/index.html
IPv6 address classification
Unicast Unicast (one to one)
Aggregate Global Unicast Addresses (public network) 2000 VuGV 3
Link-local Addresses FE80::/10
Site-local Addresses (private network) FEC0::/10
Unspecified:: / 128
Loopback:: 1/128
IPv4 compatible directly converts decimal to hexadecimal
Multicast Multicast (one-to-many) FF00::/8
Anycast Anycast (nearest pair)
EUI-64 (assuming the MAC address is 00:90:27:17:FC:0F)
Step 1: split the MAC address in two and insert FFFE in the middle
00:90:27:FF:FE:17:FC:0F
Part II: interchange the seventh bit 0 and 1 of the first byte
00000000:90:27:FF:FE:17:FC:0F
00000010:90:27:FF:FE:17:FC:0F
02::90:27:FF:FE:17:FC:0F
The last 24 bits of the Solicited-Node Multicast Address FF02::1:xx:xxxx are the last 24 bits of the IPv6 unicast address
Each IPv6 unicast address corresponds to an Solicited-Node Multicast Address address
The next hop of the route is Link-local Addresses.
2. Experimental topology
3. IPv6 configure Link-local Addresses address (FE80::/10)
R1 configuration
Interface FastEthernet0/0
Ipv6 enable
R2 configuration
Interface FastEthernet0/0
Ipv6 enable
4. IPv6 is configured with Aggregate Global Unicast Addresses (2000 VRV)
R1 configuration
Interface FastEthernet0/0
Ipv6 address 2000::1/64
R2 configuration
Interface FastEthernet0/0
Ipv6 address 2000::2/64
