What Is The Requirement Of Configuring 6 To 4 Tunneling On Two Routers?


In order to configure a 6 to 4 tunnel between two routers, you will need to have access to both routers and be able to configure each one. You will also need to have a public IP address for each router. Finally, you will need to have a tunneling protocol such as GRE or IPsec in order to create the tunnel.

What is 6 to 4 tunneling?

In computer networking, 6 to 4 tunneling is a technique used to connect two IPv6 networks over an IPv4 network. By using this technique, organizations can take advantage of the benefits of both IPv6 and IPv4 without having to upgrade their entire infrastructure to IPv6.

In order to use 6 to 4 tunneling, both sides of the connection must have public IPv4 addresses. The two sides will also need to configure their routers to use 6 to 4 tunneling. Once the configuration is complete, traffic will be able to flow between the two IPv6 networks over the IPv4 network.

One advantage of 6 to 4 tunneling is that it does not require any special equipment or software. All that is needed is a router that supports tunneling and has been configured correctly. This makes it a very cost-effective solution for connecting two IPv6 networks.

Another advantage is that 6 to 4 tunneling can be used with any type of IPv4 network, including the Internet. This means that organizations can connect their internal IPv6 networks without having to purchase a separate VPN or dedicated link.

The main downside of 6 to 4 tunneling is that it can add some complexity to the network configuration. In addition, because it relies on public IP addresses, it may not be suitable for all organizations.

Why do we need 6 to 4 tunneling?

The most common configuration for site-to-site VPNs is to have a router at each site configured with VPN software. The two routers are then connected over the Internet, and traffic is encrypted between the two.

However, this can be expensive and may not be practical in some cases. In these situations, it’s possible to use what’s known as tunneling. With tunneling, the data is encrypted at one end and sent over the Internet in an unencrypted format. It’s then received at the other end and decrypted.

This can be done using either a hardware device or software. In most cases, it’s more cost-effective to use software since you don’t need to purchase any additional hardware. There are a few different types of tunneling protocols, but the most common is IPsec.

IPsec is typically used for site-to-site VPNs, but it can also be used for remote access VPNs. With IPsec tunneling, all of the data passing between the two sites is encrypted. This includes both the headers and payloads of each packet.

One advantage of using IPsec is that it supports multiple encryption algorithms and key sizes. This means that you can choose the level of security that you need based on your budget and security requirements.

How to configure 6 to 4 tunneling on two routers?

6 to 4 tunneling is a method of connecting two IPv6 networks over an IPv4 network. To configure 6 to 4 tunneling, you will need to configure both routers with the 6to4 tunneling protocol and with each other’s IPv4 address.

  1.  Configure the 6to4 tunneling protocol on both routers.
  2.  On Router 1, enter the command: ipv6 tunnel destination .
  3.  On Router 2, enter the command: ipv6 tunnel destination .
  4.  Both routers should now have an IPv6 address in the form of 2002::.
  5.  You can now configure your IPv6 network as normal, with both routers able to communicate with each other over the IPv4 network.


The process of configuring 6 to 4 tunneling on two routers is not a difficult one, but it is important to understand the requirements before beginning. With a little bit of time and patience, you can have your tunnel up and running in no time at all.

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