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 use 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 3
DNS resolution with one domain name
Configuring DNS server addresses in a Brocade device
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.
Use the
ip dns server-address
command to configure DNS servers.
device(config)# ip dns server-address 10.157.22.199 10.96.7.15 10.95.7.25 10.98.7.15
Alternatively, you can configure DNS servers one after the other.
device(config)# ip dns server-address 10.157.22.199
device(config)# ip dns server-address 10.96.7.15
device(config)# ip dns server-address 10.95.7.25
device(config)# ip dns server-address 10.98.7.15
Configuring IP parameters - Layer 3 switches
FastIron Ethernet Switch Layer 3 Routing
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