IPv6 Application Testing: Tunneling Technology for Connectivity - Cisco Exam 352-001

Tunneling Technology for IPv6 Application Testing

Question

Company X will be integrating an IPv6 application into their network and wants to develop a test environment to evaluate application performance across the network.

This application will require both unicast and multicast communications.

The company can do this implementation only in certain areas of its existing IPv4-only network, but wants all areas to communicate with each other.

When developing the design to provide connectivity between these testing locations, what tunneling technology would work in this scenario?

Answers

Explanations

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A. B. C. D. E.

C.

In this scenario, Company X wants to test an IPv6 application across their network, which is currently IPv4-only. They need to create a test environment in certain areas of their network and enable communication between those areas.

The solution to this problem is to use tunneling technology to encapsulate IPv6 traffic within IPv4 packets. This allows the IPv6 traffic to traverse the IPv4-only parts of the network.

Out of the options given, the best tunneling technology for this scenario is 6to4.

6to4 is a tunneling protocol that uses IPv4 to carry IPv6 traffic. It is a popular choice because it is relatively easy to deploy and does not require any special configuration on the network. It works by automatically creating a virtual IPv6 network using the 6to4 prefix (2002::/16) and encapsulating IPv6 traffic in IPv4 packets.

Here's how 6to4 would work in this scenario:

  1. The test environment is set up in certain areas of the network, and IPv6 addresses are assigned to the devices in those areas.
  2. 6to4 routers are deployed at the edges of the test environment to encapsulate IPv6 traffic in IPv4 packets.
  3. The 6to4 routers create a virtual IPv6 network using the 6to4 prefix (2002::/16), which allows devices in the test environment to communicate with each other using IPv6.
  4. When traffic needs to traverse the IPv4-only parts of the network, the 6to4 routers encapsulate the IPv6 packets in IPv4 packets and send them across the network.
  5. When the packets reach another 6to4 router at the other end of the network, they are decapsulated and the IPv6 packets are sent to their destination.

In summary, 6to4 is the best tunneling technology for this scenario because it allows IPv6 traffic to traverse an IPv4-only network without requiring any special configuration on the network.