OBTAIN AN IP ADDRESS BY USING DHCPBEFORE YOU BEGIN THIS EXERCISE, YOU...

6. Select one of the two following options:

❑

Obtain DNS Server Address Automatically. If you select this option, you

must have a DHCP server available on your network to provide the IP

address of a DNS server.

❑

Use The Following DNS Server Addresses. If you select this option, you

must type in the IP addresses of the DNS servers you want this client to use.

You can enter a Preferred DNS Server address and an Alternate DNS Server

address.

In the Internet Protocol (TCP/IP) Properties dialog box, you can also click Advanced to

open the Advanced TCP/IP Settings dialog box. Click the DNS tab, on which you can

set additional configurations for DNS (see Figure 13-14). Additional options include the

following:

■

Click Add to enter additional DNS server addresses to the list of servers that ser-

vice this computer to resolve DNS domain names.

■

Click Edit to modify the addresses listed (for example, to correct an error you

made in entering an IP address).

■

Click Remove to delete the address of a DNS server from the list.

■

Click the up-pointing arrow or down-pointing arrow to change the order of the

servers listed. These arrows work like the up-pointing and down-pointing arrows

you use to change the binding order. The order in which the addresses are listed

is the order in which the servers are used. If you use the up-pointing arrow to

move an address higher on the list, that server is used before all the servers listed

after it. Conversely, using the down-pointing arrow to move a server lower on the

list causes all servers that are listed above it to be used first to resolve DNS domain

names.

F13us15

Figure 13-14 Use the Advanced TCP/IP Settings dialog box to configure additional DNS options.

How to Configure DNS Query Settings

In the Advanced TCP/IP Settings dialog box, you can also configure the way suffixes

are added to queries.

Append Primary And Connection Specific DNS Suffixes Option

By default, the Append Primary And Connection Specific DNS Suffixes option (refer to

Figure 13-14) is selected. This option causes the DNS resolver to append the client

name to the primary domain name, as well as the domain name defined in the DNS

Domain Name field of each network connection. The resolver then queries for that

FQDN. If this query fails and you have specified a connection-specific DNS suffix in

the DNS Suffix For This Connection text box, it causes the DNS resolver to append the

client name to the name you specified there.

For example, assume that an organization’s domain name is contoso.com. Querying for

the FQDN of a specific computer in the domain (say, client1.contoso.com) would

resolve that computer’s IP address. If you were to configure the contoso.com suffix to

be appended to queries, a user could query for an unqualified name (for example, by

typing client1 into the Internet Explorer address box). The computer would automat-

ically append the suffix contoso.com to the query, creating the FQDN client1.con-

toso.com.

If a DHCP server configures this connection, and you do not specify a DNS suffix, a

DNS suffix for the connection is assigned by an appropriately configured DHCP server.

If you specify a DNS suffix, it is used instead of one assigned by a DHCP server.