Next to TCP/IP connectivity, DNS, DHCP and IPAM are the most critical components of an IP network. While TCP/IP provides basic connectivity, DNS, DHCP and IPAM services link applications to other applications services to users so that work is carried out.

With the majority of IP-enabled devices configured through DHCP, this service is critical for reliable network operations. DHCP must be ever-present on the network, enabling IP devices to obtain viable addresses for their own use, address co-ordinates of available DNS servers, and other critical configuration information. A DHCP failure can prevent large numbers of devices from obtaining or renewing IP addresses. This translates to lost connectivity and lost productivity when business applications are not accessible.