CCIE Study notes 5---IPV6

IPV4 = Bits

IPV6 = Bits

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IPV6 addresses are represented by:

-Preferred notation, expressed in 32-bit 16-digit notation

16 binary, such as: FE08 ....

4 numbers in one set (16bits), intermediate: separated, such as: 2001:12FC

Example: 2001:0410:0000:0001:0000:0000:0000:45ff

-Compression notation: Compressed bit compression for 0, at the beginning of each section of the fire with:: Indicates a continuous 0

If the beginning of 0 can be omitted, a continuous group of 0 can be used:: expression. For example

1:2::ACDE: ...

One address:: Only one occurrence

-Address prefix length is represented by/xx

Example: 2001:410:0:0::45FF/64

-Nesting of IPV4 addresses in IPV6 addresses (for Automatic tunneling and NAT-PT)

Other parts of the IPV6 address (excluding the IPV4 address section) can be in either preferred or compressed format

The IPV4 address embedded in Ipv6dizhi uses the dotted decimal notation of IPv4

Address prefix length expressed in/xx

Example: 0:0:0:0:0:0:166.168.1.2/64

Nat-pt uses scenes IPv4 and IPv6 interworking----IPV4 area-----▉------IPV6 Area----

The area of the automatic tunnel IPv6 is IPv4 isolated, in order to achieve IPV6 interoperability

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IPV6 address = prefix + interface indication

-prefix, equivalent to the network ID in the V4 address

-Interface indication: equivalent to the main clause ID in the V4 address

-2001:A304:6101:1::E0:F726:4E58

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How interface IDs are generated

Automatically generated by the IEEEUI-64 specification

-Convert 48-bit MAC address to 64-bit interface ID

-48-bit MAC address (where C is company logo, 0 indicates Mac is local only, G indicates Mac is separate/group address, M is extension identifier)

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-Converted 64-bit interface ID (insert Fffe, change the local 0 to 1, represented as global)

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Interface mac Seventh Flip 01 swap, middle (ie 24 bit after inserting Fffe)

Serial serial: Borrowing the MAC address of the Ethernet interface (i.e., the interface ID of the Ethernet port)

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Public IP with aggregatable global unicast address =ipv4

Local Site Address site-local = Private address of IPv4

Unique Site Address unique local = IPv4 private address

Local link address link-local not forwarded by router

Special address:--Unspecified address (user DHCP, duplicate address detection)

-Full 0, indicating::/128

-Used only when the interface is not assigned an address, as the source address

-Used in duplicate address detection

-Packages with unspecified addresses are not forwarded

--Ring back address

-Means:: 1/128

-representing himself, the equivalent of IPV4 's 127.0.0.1

Compatible address: For V4 V6 coexistence and over-time

-IPV4 compatible IPV6 address for IPV4 compatible IPV6 Automatic tunneling

0:0:0:0:0:0:w.x.y.z

-Ipv4-mapped Address

0:0:0:0:0:ffff:w.x.y.z

-6to4-address

2002:wwxx:yyzz:subnet

-ISATAP Address

Prefix:0:5efe:w.x.y.z

-Teredo Address

2001::/32

Remember the scope of each address

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Any anycast does not have a dedicated address segment, which is used in unicast addresses (aggregatable global unicast, local site address, unique site address)

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CCIE Study notes 5---IPV6