IPv4/IPv6 Addressing and Routing Review - IPv4 Addressing
3 important questions on IPv4/IPv6 Addressing and Routing Review - IPv4 Addressing
What is the IEEE EUI-64 standard?
It is a standard used by clients to automatically configure their IPv6 address.
With EUI-64 the Host ID always is 64 bits.
It takes the MAC address of the client (48 bits), splits it in half and adds the FFFE hex value in between. In addition, it takes the 7th bit of the left and flips it.
This creates the EUI-64 interface ID (because of the FFFE in it)
With EUI-64 the Host ID always is 64 bits.
It takes the MAC address of the client (48 bits), splits it in half and adds the FFFE hex value in between. In addition, it takes the 7th bit of the left and flips it.
This creates the EUI-64 interface ID (because of the FFFE in it)
What are 3 IPv6 dynamic options for IP addressing?
- Stateless Address Autoconfiguration (SLAAC)
- Stateful DHCPv6
- Stateless DHCPv6
How does IPv6 Stateless Address Autoconfiguration (SLAAC) work?
- Designed to enable a device to configure its own IPv6 address, prefix and default gateway.
- Automatically enabled on Windows PCs
- Manually enabled on Cisco router interfaces.
- Process:
- Devices send Router Solicitation
- Wait for Router Advertisement (Identifies prefix)
- Router uses EUI-64, pc randomly generates or uses EUI-64 if enabled.
- PC uses Router Advertisement device as default gateway.
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