Domain name resolution usability evaluation method, server and system
A technology for domain name resolution and availability, applied in transmission systems, digital transmission systems, electrical components, etc., can solve problems affecting the availability and security of domain name resolution, and achieve the effect of improving usability and security and effective configuration
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Embodiment 1
[0035] figure 1 A schematic flow chart of the domain name resolution usability evaluation method provided in Embodiment 1 of the present invention, as shown in figure 1 As shown, the method includes:
[0036] Step 11. Forward the received resolution request carrying the domain name sent by the client to the local recursive server, and receive the query message returned by the local recursive server according to the resolution request. The query message includes the domain name corresponding to the local recursive server IP addresses of multiple authoritative servers;
[0037] Step 12. According to the prefixes of the IP addresses of multiple authoritative servers, a virtual N layer is obtained, wherein the first layer is the virtual top layer, and for an authoritative server, the i-th layer node corresponding to the authoritative server is the node corresponding to the authoritative server. The child node of the node of the i-1th layer; N≥2, 1≤i≤N-1, N and i are both positiv...
Embodiment 2
[0044] image 3 A schematic flowchart of the domain name resolution usability evaluation method provided in Embodiment 2 of the present invention, as shown in image 3 As shown, on the basis of the first embodiment above, step 13 of the method specifically includes:
[0045] Let the failure probability of the path from each authoritative server in layer N to the node in layer N-1 be 0, and then calculate the failure probability of each node in layer N-1 according to the failure probability of each authoritative server in layer N failure probability.
[0046] Specifically, the specific formula for calculating the failure probability of nodes on the N-1th layer is:
[0047] p(Node failure in layer N-1)=p(Authoritative server failure in layer N) n ;
[0048] Among them, p() represents the failure probability function of each node in each layer; n is the number of authoritative servers of nodes in layer N-1 in layer N; n>=1, n is a positive integer.
[0049] Further, in step ...
Embodiment 3
[0070] Figure 5 A schematic structural diagram of a domain name resolution availability evaluation server provided in Embodiment 3 of the present invention, as shown in Figure 5 As shown, the domain name resolution availability assessment server includes: a query and response processing module 51 , a distribution statistics module 52 , an initial calculation module 53 and an availability calculation module 54 . Among them, the query and response processing module 51 is used to forward the received resolution request carrying the domain name sent by the client to the local recursive server, and receive the query message returned by the local recursive server according to the resolution request, the query message includes The local recursive server obtains the IP addresses of a plurality of authoritative servers corresponding to the domain name; the distribution statistics module 52 is used to obtain virtual N layers according to the prefixes of the IP addresses of a plurality...
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