|Exam 300-101||Question id=455||Infrastructure Services|
Which methods of deployment can you use when implementing NAT64?
While stateful and stateless NAT64 perform the task of translating IPv4 packets into IPv6 packets and vice versa, there are important differences. The following table provides a high-level overview of the most relevant differences.
Differences Between Stateless NAT64 and Stateful NAT64
|Stateless NAT64||Stateful NAT64|
|1:1 trtanslation||1:N translation|
|No conservation of IPv4 address||Conserves IPv4 address|
|Assures end-to-end address transparency and scalability||Uses address overloading, hence lacks in end-to-end address transparency|
|No state or bindings created on the translation||State or bindings are created on every unique translation|
|Requires IPv4-translatable IPv6 addresses assignment (mandatory requirement)||No requirement on the nature of IPv6 address assignment|
|Requires either manual or DHCPv6 based address assignment for IPv6 hosts||Free to choose any mode of IPv6 address assignment with Manual, DHCPv6, SLAAC|