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| Sun Ethernet Fabric Operating System ### DHCP Administration Guide

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## Configure the DNS Option

This pool-specific option is offered to the DHCP client as a configuration parameter. This option is offered to DHCP clients in the pool only when there is no host-specific option for the client. If this option is not configured and there is no host option, the global option is used.

In this example, the DNS server address is `12.0.0.6`.

1. Create the address pool.

       SEFOS# configure terminal
       SEFOS(config)# ip dhcp pool 1

2. Specify the DNS IP address.

       SEFOS(dhcp-config)# dns server 12.0.0.6
       SEFOS(dhcp-config)# end

3. Ensure that the DNS IP address has been configured.

       SEFOS# show ip dhcp server pools

   The output in switch 1 is:

       Pool Id                         : 1
       -------------------------------------------
       Subnet                          : 12.0.0.0
       Subnet Mask                     : 255.0.0.0
       Lease time                      : 95400 secs
       Utilization threshold           : 50%
       Start Ip                        : 12.0.0.1
       End Ip                          : 12.0.0.100
       Exclude Address Start IP        : 12.0.0.1
       Exclude Address End IP          : 12.0.0.10

       Subnet Options
       --------------
       Code       :     1, Value      : 255.0.0.0
       Code       :     6, Value      : 12.0.0.6
       Code       :    15, Value      : future

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