On Sun, Feb 06, 2005 at 05:35:05PM -0000, Amit D Karia wrote:

This is amit karia I would Like to know how to configure Dynamic Dns in Redhat linux And i Would also like to know the difference between Dynamic DNS nd DNS And the , Difference between DHCP nd Dynamic DHCP ... And how to configure Simple DNS wen i already have DHCP configured In my network ..

DNS, the domain name system, tells anyone who asks that the domain name example.com is at the IP address <whatever>. This assumes that your IP doesn't very quickly over time -- months, if not years, if ever, between changes. Dynamic DNS is a way o associating a domain name with a machine whose IP address changes more often -- a week, a day, less.

DHCP is dynamic host configuration protocol. A machine does not have to be told its IP address, subnet, gateway, etc. It can send a DHCP broadcast and have these things assigned by a DHCP server, which knows who's been assigned what (by the MAC address, which doesn't change unless you change hardware -- in a simplistic universe as assumed by this email).

It doesn't get much more dynamic than that, so I'm not sure what dynamic DHCP would be -- unless it's the DHCP server dynamically changing IP assignments (which happens anyway -- your ISP, for example, does it) or changing the IP ranges and subnets, which is just weird.