300-420 · Question #320
A company wants to deploy IPv6 within its existing network infrastructure. All current infrastructure equipment supports IPv6, and the company wants a migration strategy that must not require…
The correct answer is C. dual-stack model. To deploy IPv6 without new equipment, keeping costs low, supporting multicast, and enabling DNS migration, the dual-stack model is the most suitable strategy. It allows devices to run both IPv4 and IPv6 protocols simultaneously, leveraging existing infrastructure.
Question
A company wants to deploy IPv6 within its existing network infrastructure. All current infrastructure equipment supports IPv6, and the company wants a migration strategy that must not require purchasing additional equipment. The plan must keep operational management costs low, support IPv6 multicast, and allow applications to migrate using DNS. Which strategy must the company choose?
Options
- Ahybrid ISATAP tunnel model
- Bhybrid manual tunnel model
- Cdual-stack model
- Dservice block model
How the community answered
(49 responses)- A2% (1)
- B12% (6)
- C82% (40)
- D4% (2)
Why each option
To deploy IPv6 without new equipment, keeping costs low, supporting multicast, and enabling DNS migration, the dual-stack model is the most suitable strategy. It allows devices to run both IPv4 and IPv6 protocols simultaneously, leveraging existing infrastructure.
ISATAP tunnels introduce complexity and overhead by encapsulating IPv6 packets within IPv4, which contradicts the goal of low operational management costs when native IPv6 is already supported.
Manual tunnels require static configuration on each endpoint, leading to high management overhead and poor scalability, which is contrary to the requirement for low operational management costs.
The dual-stack model involves running both IPv4 and IPv6 protocols concurrently on existing network equipment. Since the infrastructure already supports IPv6, this approach minimizes operational complexity and costs by avoiding tunneling overhead and natively supporting IPv6 multicast, while allowing applications to migrate using standard DNS AAAA records.
The 'service block model' is not a recognized or standard IPv6 migration strategy in networking.
Concept tested: IPv6 migration strategies- dual-stack
Source: https://www.cisco.com/c/en/us/support/docs/ip/ipv6/113110-ipv6-mig-faq.html
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