Brocade FastIron Ethernet Switch Layer 3 Routing Configuration Guide - Manual (Page 44)

FIGURE 3 DNS resolution with one domain name
Defining DNS server addresses
You can configure the Brocade device to recognize up to four DNS servers. The first entry serves as
the primary default address. If a query to the primary address fails to be resolved after three attempts,
the next DNS address is queried (also up to three times). This process continues for each defined
DNS address until the query is resolved. The order in which the default DNS addresses are polled is
the same as the order in which you enter them.
To define DNS servers, enter the ip dns server-address command.
device(config)# ip dns server-address 10.157.22.199 10.96.7.15 10.95.7.25 10.98.7.15
Syntax: [no] ip dns server-address ip-addr [ ip-addr ] [ ip-addr ] [ ip-addr ]
In this example, the first IP address entered becomes the primary DNS address and all others are
secondary addresses. Because IP address 10.98.7.15 is the last address listed, it is also the last
address consulted to resolve a query.
Defining a domain list
If you want to use more than one domain name to resolve host names, you can create a list of domain
names. For example, enter the commands such as the following.
device(config)# ip dns domain-list company.com
device(config)# ip dns domain-list ds.company.com
device(config)# ip dns domain-list hw_company.com
device(config)# ip dns domain-list qa_company.com
device(config)#
The domain names are tried in the order you enter them
Syntax: no ip dns domain-list domain-name
Defining DNS server addresses
44 FastIron Ethernet Switch Layer 3 Routing Configuration Guide
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