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<h2>Configuring a DHCP Server
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<p>To access the DHCP server click Administrative Tools> DHCP. To view DHCP server statistics, right-click on the server. Then select Display Statistics. The Server Statistics box shows general information about the DHCP server such as the number of Acknowledgements and address usage.<strong>w3-block</strong> class can create a full-width button.</p>
<p><button class="w3-button w3-block w3-PINK">To configure the properties of the DHCP server, right-click on the server. Then click Properties. The Automatically update statistics every box automatically refreshes DHCP server statistics at the time interval shown. The interval can be lowered if more frequent readings are required. The Enable DHCP audit logging check box specifies whether to log DHCP server activity. The information is recorded to the event viewer which can be used for troubleshooting. The Show the BOOTP table folder specifies whether to display the BOOTP Table folder for this server. Click this option to enable and configure support for BOOTP clients on the network. The DNS tab is used to configure DHCP/DNS integration. The DNS tab is used to configure DHCP/DNS integration. The Automatically update DHCP client information in DNS check box specifies whether the DHCP server sends DNS updates to the DNS server, and when to do it.</button></p>
<p><button class="w3-button w3-block w3-circle w3-teal">The Enable updates for DNS clients check box specifies whether the DHCP server sends dynamic updates to the DNS server for any DHCP clients that do not support performing these updates. Legacy Windows clients (NT/9x) don’t support updating DNS, therefore enabling this option will enable legacy clients to be registered with DNS. N.B. DNS may also need configuring. The Discard A and PTR records when lease is deleted check box specifies whether the DHCP server will erase the DNS record once the client’s lease has expired. If Network Access Protection is enabled on the server the policies can be enabled or disabled for all scopes. If DHCP cannot contact the Network Policy Server the client’s network access can be controlled with these options. Default is Full Access.
The Advanced Tab. The Conflict detection attempts box specifies the number of conflict detection attempts the DHCP server will make before leasing an address to a client.
The Audit log file path. Click on Bindings to configure server connection bindings. If the DHCP server has more than one network card, then you can specify whether the DHCP server should supply addresses to the second network as well.
Click on Credentials to configure server Credentials. The DNS dynamic update credentials. If the supplied credentials belong to an object (such as a computer) that is a member of the DnsUpdateProxy security group, the next object to register the same name record in DNS will become the record owner. If you specified the credentials (user name, domain, and password) that the DHCP server uses when registering DHCP client computers in DNS, these credentials are not backed up with either synchronous or asynchronous backup. After a DHCP database is restored, new credentials must be configured.
The DnsUpdateProxy security group. This group is installed in Active Directory when DNS is installed. Members of this group are DNS clients that can perform dynamic updates on behalf of other clients, such as DHCP servers. Members of this group do not own the records they create.
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<img class="w3-image w3-block" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjv3nG2YGeYPSD4bAn-rqOo0q5cCa7I_RLUSXU0nkf8P4MldRKNVaYNNiZXIq44oXUVBHMwkwNXB3NNbXGAbINox1nHZ3Y3rIDEKJgKqqfvul7nsITBOjlvYb4mv2mN3ickP5O17K3-kOpV/s1600/dhcp.jpg" alt="Norway" style="height:400px">
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<p>DHCP on a Routed Network
Since DHCP uses broadcasts, and routers block broadcasts, clients on remote subnets may be unable to receive TCP/IP information from a DHCP Server. Clients will use Automatic Private IP Addressing (APIPA) if they are unable to locate a DHCP server. Using APIPA a client will assign itself a random address between 169.254.0.1 – 169.254.254.254/16, allowing it to communicate with other clients on the same network segment who are also using APIPA.
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<p class="w3-wide">In order for clients on remote subnets to use DHCP, A DHCP relay-agent will need to be configured. The DHCP relay-agent listens for DHCP Traffic on its local network and forwards it to a DHCP Server. The DHCP Client can then get TCP/IP information from the DHCP Server.
To configure a DHCP relay agent, routing and remote access will need to be started. Click on Start. Select Administrative Tools > Routing and Remote Access.
The Routing and Remote Access management console will appear, expand the server. The red arrow next to the server indicates that the service is not running. To start the service right-click on the server. Select Configure and Enable Routing and Remote Access. The Routing and Remote Access Server Setup Wizard will appear. Click on Next to continue. Select Custom configuration. Click on Next to continue. Select LAN routing. Click on Next to continue. Click on Finish to close the Routing and Remote Access Server wizard. Routing and Remote Access has been installed. Click on Yes to start the service. The service will then start.
The green arrow next to the server indicates that the service has started. To install the DHCP relay agent, expand IP routing. To add the DHCP relay agent protocol, right-click on General. Select new Routing Protocol. A list of available routing protocols is displayed. Ensure that DHCP Relay Agent is highlighted and click on OK.
The DHCP Relay Agent has been installed. To configure the new Relay Agent, right-click on DHCP Relay Agent. Select New Interface. Choose the interface that the DHCP Relay Agent is to run on – in this case, Local Area Connection. Click on OK, to configure the DHCP Relay Agent to use the Local Area Connection interface. Ensure that the Relay DHCP Packets check box is selected. The Hop-count threshold indicates the maximum number of DHCP relay agents that will handle DHCP relayed traffic. The Boot threshold specifies how many seconds the relay agent waits before forwarding DHCP messages. This option is useful if you want a local DHCP server to respond first.
If the local DHCP server doesn’t respond then the packet will be forwarded to a remote DHCP server. Click on OK to continue. To add the address of the remote DHCP server, right-click on DHCP Relay Agent. Select Properties. Type the IP address of the DHCP Server into the Server address box. Click Add. Click on OK to close the Properties dialog box. The DHCP Relay Agent has been installed and configured.
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