Brocade Communications Systems ICX 7250 series, Руководство по настройке

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After you define a domain name, the Brocade device automatically appends the appropriate domain to a host and forwards it to the DNS
servers for resolution.
For example, if the domain "ds.company.com" is defined on a Layer 2 or Layer 3 switch and you want to initiate a ping to "mary", you
must reference only the host name instead of the host name and its domain name. For example, you could enter the following command
to initiate the ping.
Brocade:> ping mary
The Layer 2 or Layer 3 switch qualifies the host name by appending a domain name (for example, mary.ds1.company.com). This
qualified name is sent to the DNS server for resolution. If there are four DNS servers configured, it is sent to the first DNS server. If the
host name is not resolved, it is sent to the second DNS server. If a match is found, a response is sent back to the client with the host IP
address. If no match is found, an "unknown host" message is returned.
FIGURE 5 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.
Configuring IP parameters - Layer 3 switches
Brocade FastIron Layer 3 Routing Configuration Guide
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