The scenario
An IPv6 testbed demonstrates dual-stack, 6to4 tunneling, and NAT64/DNS64 translation, with dual-stack and IPv6-only clients accessing IPv4 resources.
What is in this drawing
Read the decisions behind it.
01
Tiered layout separates internet edge, core routers, and access switch
02
6to4 relay is modeled as a router with a dedicated tunnel link to the internet
03
DNS64 server placed on access VLAN 100 to support NAT64 name resolution
Reuse for IPv6 migration labs, training topologies, or documentation of transition mechanism interoperability.
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