Anycast DNS is the topic of today’s article. First, we will take a deep look at its primary purpose, how it functions, and why it is so advantageous. So, let’s get into this adventure.
What is the purpose of Anycast DNS?
Anycast DNS is a traffic routing method that allows websites to provide information quickly. It employs many nameservers, each responsible for a single IP address.
Each server is positioned in a different geographical region to be as close to the users as possible. The goal is to provide a quicker response to the request, resulting in a better user experience. The nearest and most available server to the customer requesting the webpage will respond. Any potential for the lag is reduced to a bare minimum. Customers would not have to wait long to connect with your website because it is easily accessible.
Furthermore, if the closest server is unavailable due to maintenance, another server, the next closest, will respond.
How does Anycast DNS work?
Anycast works in an easy way. First, the arriving demands can be routed across multiple data centers using Anycast network routing. Every request is routed through a single IP address associated with the Anycast network. The data is then distributed via the network according to priority. The primary reasons for picking a suitable data center are selecting the data center closest to the user and lowering latency.
Advantages of using Anycast DNS
Anycast DNS could be really beneficial. We will take a look at the main four. Here they are:
1. Security and protection
DoS and DDoS attacks are two of the most common and dangerous cyber threats available.
The fundamental purpose of these cyberattacks is to overwhelm and bring down their target by using massive volumes of bandwidth. Anycast DNS can be used for load balancing, as previously stated. In that manner, malicious traffic could be dispersed over the network while your website remained operational. This effective technique and solid server network assist you in enhancing the overall security of your website or services.
2. Load balancing
The nearest Anycast DNS server responds to the traffic. Numerous servers react to queries from neighboring customers. As a result, not all traffic must travel via the same nameservers, and the network is not compromised. Because DDoS attacks are scattered over the web, an Anycast DNS network’s load balancing capacity helps it withstand them.
With Anycast, you have a network of nameservers, not just one. They all point to the same IP address, so if one goes down (DNS outage), the recursive DNS server will keep looking for DNS data until another Anycast DNS server can reply. The client will be unaffected by the delay, and it will be able to resume normal operations once the server has recovered.
4. Easy configuration
Anycast DNS can make the configuration of all DNS Resolvers a lot easier. All Recursive DNS servers can use the same nameserver IP addresses. So, configuring DHCP templates for dynamically configured hosts and imaging or manually configuring statically configured IPs will be significantly simplified.
Considering all of the facts, Anycast DNS is absolutely beneficial for you and your business. Why? Because it gives you more security against DDoS attacks and balances the load. In addition, its configuration is easy, and if some of the other servers are down, the website will continue to function.