A DHCP feature designed for this is the user class option. To do this, the client software must allow the user class option to be preconfigured and the server software must support its use to control which pool a client's address is allocated from. (DHCP FAQ (http://www.dhcp-handbook.com/dhcp_faq.html#iaplh)
In order to create domain, wizard is used. In nets 208.32.16.0, 208.32.16.64, 208.32.16.128 elimination range is used only from one (last) address of range, because it's assigned to router's port as it was mentioned above. All other nodes, including printers may be set up on automatic receiving of address from DHCP server: "as Most routers incorporate a DHCP server to automatically configure all the computers on your LAN. (Les Freed PC Magazine Guide to Home Networking p.41)
In the wizard for defining lock-router for clients the following addresses are defined. For example, for the third floor router's address 208.32.16.62 is used, for the second floor- 208.32.16.126, etc. In domain settings for all domains we define WINS addresses and DNS which were assigned and chosen above. In order to shorten traffic in the net, "rent" period is chosen to be 10 days. This period may be changed then if the importance will appear. For the ground floor elimination range will be between 208.32.16.230-208.32.16.254. In the case of using new servers in future, last would have to be assigned additionally addresses from this range.
Because the server DHCP is installed in last subnet in its own segment it can serve only in its own segment, because while connected, client sends wide request for search of the DHCP server, which is not transmitted by router to other IP subnets. So first, three subnets do not have DHCP server in their segment. In order to organize automatic receiving of addresses in these segments Agent of retranslation has to be set up correctly in router. Agent has to administer three subnets: 208.32.16.0, 208.32.16.64, 208.32.16. 128. In properties of agent the following DHCP server address has to be defined: 208.32.16.230. Agent receives wide client's request for DHXCP search, Agent receives this message and readdresses it to server, further message exchange is executed with server by means of Agent.
Installation of DNS, WINS, IIS servers
As it was said above DNS server was set up with domain's controller and ELBRYN.COM. zone is integrated into Active Directory. Server is used for permitting internet names in IP addresses. It receives clients' requests on the interface 208.32.16.232. For effective use of server it's recommended to organize resending of non-recursive requests to DNS server of internet service provider. In order to keep actual client names in ELBRYN.COM zone dynamic update of nodes records of DNS with DHCP server has to be organized. So, when computer will be renamed, new record nodes will be created in ELBRYN.COM, zone automatically.
By default, the Domain Controllers (DCs) group has full control of all DNS zones and records. Because the DHCP Server service runs under the domain controller's computer account, it has full control of all DNS zones and records. Because of this, the DHCP Server service has the authority to update or delete any DNS record that is registered in a secure Active Directory-integrated zone (this includes records that were securely registered by other Windows 2000-based computers, including domain controllers).
To minimize the potential of name hijacking, Microsoft does not recommend that you install the DHCP Server service configured to perform DDNS update on a DC. Instead, install the DHCP Server service on a separate server, and not a domain controller." (from Installing Dynamic Host Configuration Protocol (DHCP) and Domain Name System (DNS) on a Domain Controller (http://support.microsoft.com/?kbid=255134)
In order the requests to be solved correctly by DNS server it's essential to install and set reverse zones, which correspond to subnets created earlier: 0.16.32.208.in-addr.arpa., 64.16.32.208.in-addr.arpa., 128.16.32.208.in-addr.arpa., 192.16.32.208.in-addr.arpa. So there are 4 zones of reverse viewing. They have to be created before the start of DHCP server's work and before client computers start working, if it's possible. In order to provide the work of WWW.andFTP servers, pseudo names are created (records of CNAME type:.".. CNAME: The Value field gives the canonical name for a particular host; it is used to define aliases...." (from Peterson, Larry L. Computer Networks: A Systems Approach)) in zone ELBRYN.COM. In order clients to be able to call them by the addresses www.elbryn.comand ftp.elbryn.com.
In order to check the settings and functioning of server, administrator can test it by entering its properties and clicking on test button. Also the work...
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