Accurate Path Selection through Domain Name Routing
In an enterprise network with multiple WAN connections, if network administrators try to set routing policy based on FQDN as destinations to direct traffic to organizations like Dropbox or Youtube via specific paths, it is hardly achievable. This is because organizations like Dropbox or Youtube usually have so many IP addresses for DNS query. They randomly return IP to those DNS queries to their domains, and then network devices create routing rule based on the IP address of the destination host through first DNS query. However, second DNS lookup to those large organizations aforementioned usually gets different IP returned. Therefore, second and the other requests from same network might not follow the rule previously created.

Besides, if network administrators try to configure routing policy based on second-level domains as destinations such as gov.uk and edu.my via specific paths, it will be hardly achievable either. 

Those issues can perhaps be overcome by adding lots of destination IP in the routing rules. Adding those rules can be time-consuming, error-prone and doesn't guarantee the applications get routed correctly. On top of that, there are so many large organizations randomly return different IP to DNS query.

>  DNS Routing

 

Domain Name Routing

 

As a solution to the issue, Q-Balancer has the ability to intercept DNS queries and create routing rules based on the destination IP in real-time whenever a DNS request arises. In Q-Balancer policy‐based routing (PbR) is allowed to work in conjunction with DNS routing, and so domain names can be used as destination of a routing policy. This enables business to automate and simplify those routing rules based on domain name rather than lots of IP addresses. As DNS Routing can be configured along with PbR, it is able to work with load balancing, failover, firewall, and QoS in a policy. This optionally provides business with the ability to efficiently and flexibly control application routing in a hybrid WAN network.

Top Benefits

  • Improved application performance

  • Greater business productivity

  • Better network utilization

  • Granular path control over hybrid-WAN network