How to solve the conflict between Cisco routing protocol

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With the deployment of IPv6 development, more and more companies and institutions have started using IPv6 as the main access line, which will bring conflict a trouble trouble, the old network protocols and network protocol will inevitably conflict situation, especially the IPv6 migration brings trouble for DNS processing, below the problem analysis. One, current use of both protocol stack model, which compared with the tunnel and the conversion mode, which belongs to the application mode of the most feasible. The reason lies in the deployment of the most simple, and can provide the most extensive compatibility for terminal equipment, as a system engineering, let all the equipment in the real world, need to spend a long time from the current Internet standards are migrating to IPV6 work, want to realize from the IPv4 protocol migration to the large-scale operation on the IPv6 agreement. This progress will be very slow, and will need to spend a few years time. During this period, all users must be faced with the need to somehow also supports two protocols running situation. Two, is also in the calculation of the current popular cloud, to a large extent also need to rely on the IP address to the calculation, the number of storage and cyber source integration and connection, they also need to provide public services for clients such as DNS. Therefore, they established a set of automation of complex system based on the script and management framework to provide services to remote control and project supervision, the cloud service providers, not only need to ensure that the external service can be two versions also support, but also need to ensure that the internal system, framework and control function must be compatible with the requirements. Three, for cloud computing providers, especially as a service mode by software companies, compared with the infrastructure as a service company, to carry out the work difficulty may not be so high. The reason lies in the infrastructure as a service providers need to deal with two aspects of the client configuration and its virtual mirror control, in this case, many problems may be dependent on the IPv4 protocol instead of IPv6 protocol, and vice versa. Four, while for the application or other types of services, in the development tend to identify all from external or third party integration service using IP. And, often, these applications by end users rather than the supplier control, this does not mean that the software as a service provider can sleep without any anxiety. All deployed to the applications of cloud computing environment will need to be integrated into the enterprise data center, vice versa, this is equivalent to using different versions of IP exist to provide security or integrated function, it may cause incompatibilities, or let the migration process can not be completely finished. Five, due to the migration of this magnitude relates to many different variables, which means that we will face the countless challenges; therefore, it is absolutely not a simple work pulling the switch can be completed. So, before the migration in the decision, relevant parties must cooperate fully and carefully planned, ensure that does not appear in the large-scale outages, can be gradually carried out specific work. Six, because the most basic equipment already contains the dual protocol stack, therefore, can be fully meet the relevant requirements. However, even if the operation of the dual protocol stack, also not be equal to can have many services to network and application oriented are integrated together, actual process from the website link, this work is much more complicated than it looks. The DNS server needs can be query, data packet needs to be able to pass through the routing, TCP session needs to permit is initiated, packets need to exchange. Seven, the site where the data center, even in response to a ICMP echo request for the simple work like this, also need many components including software and hardware, interactive collaboration to complete, due to the dual protocol stack can not be compatible with the IPv6 protocol service included. You can imagine, in this case, if a IPv4 terminal inquiry website IP address, the DNS server must respond, to the DNS server, how to ensure that the correct version of the use of protocol for response? When we move from the current version to a new release time, application environment needs two version also supports, which means the Internet service infrastructure must also do this, this let the actual work than initially looks far more complex.