For network operators, recursive (caching) DNS is a critical service. Without good, fast DNS service, the Internet service appears slow and unresponsive. Caching DNS systems must also be capable of absorbing “spikes” in traffic which can occur for a multitude of reasons – peak loads, Internet events, DoS etc.
Service providers everywhere are executing on IPv6 transition strategies, some with more urgency than others. Numerous approaches to enable the transition are being implemented, with a goal of maximizing the utility of IPv4 addresses while ensuring 100% connectivity to the small but rapidly growing base of IPv6 addressed hosts. Regardless of technologies being deployed it’s important not to overlook the DNS since new stresses will be placed on it during the transition. Since every service provider has allocated budget for IPv6 readiness, now’s a great time to ensure the DNS is really “ready”. A couple of simple steps will ensure customers continue to enjoy fast response times and high service levels.