로컬 캐쉬정보에 의한 DNS장애 대처방안
(A) study on DNS fault avoidance by using local cache information
로컬 캐쉬정보 DNS장애 대처방안;
- 원문 URL
In general, DNS information is usually kept by local DNS server in each Intranet. But most of local DNS servers hold their own DNS information, so there may be times when DNS information about a certain site clients visit. In this case, the relevant local DNS server are automatically replaced by upper DNS servers to enable you to connect to Internet. Accordingly, it is natural that there are a lot of connections to upper DNS across the networks, structured in the form of a hierarchy. If a upper DNS server fails due to overload or hacking, subordinate DNS servers cannot find the IP address of a desired site. The result is a failure or delay(congestion) of the Internet network. It is obvious that a hierarchic DNS structure has many advantages, to include a quick Internet searches and efficient data management. However, when chaining loses certain stability and unexpected failures occur in major nodes, many subordinate clients may fail to interpret IP addresses. Therefore, this study suggests another alternative solution: This method challenges the possible efficiency of current hierarchic DNS structure, while operating additional horizontal DNS structures that connect independent(individual) DNS and personal DNS horizontally in parallel so as to prevent any potential failure. Hopefully, it is expected that this solution will enable you to prepare for almost all DNS failures in the future.