Posts
Global Unicast Address
- Works like Public IPv4 addresses.
- Should be registered with numbering authority.
- Assigned as a Global routing prefix by ISP.
- Can be used to connect to the internet.
- Globally unique.
Unique Local Unicast Address
- Works like Private IPv4 addresses.
- No need to register with numbering authority.
- Unable to connect to the internet directly.
- Same addresses can be used in multiple organizations.
Unique Local Unicast Address Format
8 Bits
|
40 Bits
|
16 Bits
|
64 Bits
|
FD
|
Global ID (Pseudo-random)
|
Subnet
|
Interface ID
|
Global routing prefix:
Reserved block of IPv6 addresses, that only one company can use.
Reserved block of IPv6 addresses, that only one company can use.
Address Type
|
First Hex Digits
|
Global Unicast
|
2 or 3(originally); all not otherwise reserved.
|
Unique Local
|
FD
|
Multicast
|
FF
|
Link-Local
|
FE80
|
IPv6 subnet ID is also called as Subnet-router anycast address.
Host IPv6 addresses can be configured statically and dynamically using either DHCP or SLAAC.
SLAAC - Stateless Address Auto Configuration.
DHCP - Dynamic Host Configuration Protocol.
Comments