How to create a secondary DNS under Windows 2012

The company has two DNS servers, recently employees reflect the open part of the site after the picture can not be normal display, if the client DNS designated public network of arbitrary DNS (such as: 202.106.0.20, 202.160.46.151, 8.8.8.8) can be opened normally , the DNS server's forwarders add public network DNS addresses (such as: 202.106.0.20, 202.160.46.151, 8.8.8.8), and then feel that the DNS forwarder does not take effect, so you want to try to resolve by deploying secondary DNS. By deploying secondary DNS, the pictures of the site are displayed normally, so share here:

Environment Introduction:

Domain name:dsgrd.com

Hostname:dsgrd-dc

Os:windows2008r2

ip:192.168.220.254

ROLES:DC DHCP DNS CA

Hostname:dns01

os:windows2012

ip:192.168.220.222

Roles: Secondary DNS

We first create a computer named DNS01, and add to the dsgrd.com

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Then open Server Manager-click Install-Role---DNS server