A: The short answer is no; however, it's important to step back and understand how DNS interacts with DHCP regarding dynamic updates, then look at what each of the two actions mentioned in the title actually does—namely, setting DNS dynamic update credentials on DHCP and adding a DHCP server to the Dns Update Proxy group.
Dynamic DNS is a feature that allows hosts to register their records in DNS, thus removing the need for administrators to manually create records.
The primary full computer name, an FQDN, is based on the primary DNS suffix of a computer,appended to its computer name.
Additional considerations: When one of the previous events triggers a dynamic update, the DNS Client service (not the DHCP Client service) sends updates.
If dynamic update does not register a name or IP address properly, use the following process to diagnose and solve your problem.
Secure dynamic update can prevent a client from creating, modifying, or deleting records, depending on the ACL for the zone and the name.
By default, secure dynamic update prevents a client from creating, deleting, or modifying a record if the client is not the original creator of the record.
For example, if two computers have the same name and both try to register their names in DNS, dynamic update fails for the client that registers second.Would like to see about getting DHCP configured on a Cisco switch to auto-register the computers hostname with a MS DNS server.Had to troubleshoot a workstation hogging bandwidth.This is designed so that if a change to the IP address information occurs, corresponding updates in DNS are performed to synchronize name-to-address mappings for the computer.The DNS Client service performs this function for all network connections on the system, including connections that are not configured to use DHCP.Dont have a router there, only a 3750 tied in via a fiber link.