300-420 · Question #214
Refer to the exhibit. An architect must design an IPv6 migration solution for an enterprise customer to support these requirements: - Clients will transition to the new IPv6 network, which provides…
The correct answer is B. Use IPv6 tunneling from the devices to the core MPLS network. D. Use NAT44/64 from the MPLS network to the IGR. Requirement for IPv6 Tunneling: IPv6 devices must communicate with the IPv4 network via the core MPLS network. Using IPv6 tunneling encapsulates IPv4 packets in IPv6 tunnels, allowing communication while transitioning to IPv6. This aligns with the service provider's requirement…
Question
Refer to the exhibit. An architect must design an IPv6 migration solution for an enterprise customer to support these requirements:
- Clients will transition to the new IPv6 network, which provides NAT64
and IPv6 DNS resolution services, using the same DNS name that points to the IPv4 address.
- The service provider will create a client-facing IPv6 interface with
a new IPv6 virtual address that points to the same IPv4 DNS server.
- The service provider will support clients that use global IPv6
addresses and encapsulate IPv4 packets into IPv6 tunnels. Which two migration solutions must the architect choose? (Choose two.)
Exhibit
Options
- AUse dual-stack lite from the MPLS network to the IGR.
- BUse IPv6 tunneling from the devices to the core MPLS network.
- CUse dual-stack lite from the devices to the core MPLS network.
- DUse NAT44/64 from the MPLS network to the IGR.
- EUse NAT44/64 from the devices to the core MPLS network.
How the community answered
(27 responses)- A4% (1)
- B81% (22)
- C11% (3)
- E4% (1)
Explanation
Requirement for IPv6 Tunneling: IPv6 devices must communicate with the IPv4 network via the core MPLS network. Using IPv6 tunneling encapsulates IPv4 packets in IPv6 tunnels, allowing communication while transitioning to IPv6. This aligns with the service provider's requirement to encapsulate IPv4 packets into IPv6 Requirement for NAT44/64: NAT64 is required to translate IPv6 addresses to IPv4 addresses for devices accessing IPv4 resources. Additionally, the MPLS network must provide the NAT64 functionality at the edge (to the IGR) to enable seamless communication between IPv6 clients and IPv4 services (e.g., IPv4 Internet). NAT44 is included for IPv4-to-IPv4 traffic if needed.
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