<div class="content" name="R_DhcpGetMibInfo" uuid="40d52ecd-a27a-4378-9e82-15bb3d3f91c2"><p>The <b>R_DhcpGetMibInfo</b> method is used to retrieve the
statistics of the DHCPv4 server. The caller of this function can free the
memory pointed to by the <i>MibInfo</i> parameter and its member the <b>ScopeInfo</b>
array by calling the function <b>midl_user_free</b> (section <a href="a7e5f2d1-04b7-4363-bdc0-76a1099664eb" data-linktype="relative-path">3</a>).</p><dl>
<dd>
<div><pre> DWORD R_DhcpGetMibInfo(
   [in, unique, string] DHCP_SRV_HANDLE ServerIpAddress,
   [out] LPDHCP_MIB_INFO* MibInfo
 );
</pre></div>
</dd></dl><p><b>ServerIpAddress: </b>The IP address/host name of
the DHCP server. This parameter is unused.</p><p><b>MibInfo: </b>This is a pointer of type <a href="b4db5a54-5df7-4a88-99dd-d782787c41a0" data-linktype="relative-path">LPDHCP_MIB_INFO</a> that
points to the location that contains DHCPv4 server statistics.</p><p><b>Return Values: </b>A 32-bit unsigned integer value
that indicates return status. A return value ERROR_SUCCESS (0x00000000)
indicates that the operation was completed successfully, else it contains a
Win32 error code, as specified in <a href="../ms-erref/1bc92ddf-b79e-413c-bbaa-99a5281a6c90" data-linktype="relative-path">[MS-ERREF]</a>.
This error code value can correspond to a DHCP-specific failure, which takes a
value between 20000 and 20099, or any generic failure.</p><dl>
<dd>
<table><thead>
  <tr>
   <th>
   <p>Return value/code</p>
   </th>
   <th>
   <p>Description</p>
   </th>
  </tr>
 </thead><tbody><tr>
  <td>0x00000000 ERROR_SUCCESS</td>
  <td>The call was successful.</td>
 </tr></tbody></table>
</dd></dl><p>The opnum field value for this method is 22.</p><p>When processing this call, the DHCP server MUST do the
following:</p><ul><li><p><span><span> 
</span></span>Validate whether this method is authorized for read access per
section <a href="baec2112-1146-4c42-b77e-b706e170a590" data-linktype="relative-path">3.5.4</a>. If not,
return the error ERROR_ACCESS_DENIED.</p>
</li><li><p><span><span> 
</span></span>Retrieve the server Abstract Data Model (ADM) element <b>DHCPv4ServerMibInfo</b>,
and copy the information in it to the <i>MibInfo</i> parameter structure.</p>
</li><li><p><span><span> 
</span></span>Retrieve the <b>DHCPv4ScopesList</b> ADM element object and set
the <b>Scopes</b> member of the <i>MibInfo</i> parameter with the number of
entries in it.</p>
</li><li><p><span><span> 
</span></span>Incrementally calculate the statistics for all the <b>DHCPv4Scope</b>
ADM element objects in the <b>DHCPv4ScopesList</b> ADM element, and copy them
to the <b>ScopeInfo</b> member of the <i>MibInfo</i> parameter.</p>
</li><li><p><span><span> 
</span></span>Return ERROR_SUCCESS.</p>
</li></ul><p><b>Exceptions Thrown:</b> No exceptions SHOULD be thrown beyond
those thrown by the underlying RPC protocol specified in <a href="../ms-rpce/290c38b1-92fe-4229-91e6-4fc376610c15" data-linktype="relative-path">[MS-RPCE]</a>.</p></div>