Information Technology Reference
In-Depth Information
figure 2.43
DNS tab of the scope's IPv4 Properties dialog box
e xerCiSe 2.14
enabling dhCp-dNS integration
1.
Open the DHCP snap-in by selecting Administrative Tools
➢
D H C P.
2.
Right-click the IPv4 item and select Properties.
3.
The Server Properties dialog box appears. Click the DNS tab.
4.
Verify that the check box labeled Enable DNS Dynamic Updates According To The Set-
tings Below is checked and verify that the radio button labeled Dynamically Update DNS
A And PTR Records Only If Requested By The DHCP Clients is selected.
5.
Verify that the check box labeled Discard A And PTR Records When Lease Is Deleted is
checked. If not, then check it.
6.
Click the OK button to apply your changes and close the Server Properties dialog box.
Using Multiple DHCP Servers
DHCP can become a single point of failure within a network if there is only one DHCP
server. If that server becomes unavailable, clients will not be able to obtain new leases or
renew existing leases. For this reason, it is recommended that you have more than one
DHCP server in the network. However, more than one DHCP server can create problems if
they both are configured to use the same scope or set of addresses. Microsoft recommends
the 80/20 rule for redundancy of DHCP services in a network.
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