Several possible outcomes ensue when the Locate Rogue DHCP Server job completes. The first outcome, described in this section, is a positive match (the rogue server is found):
- The upstream switch port from which the DHCP messages originated is found, and that upstream port has only a single downstream MAC address connected to it. This downstream MAC address is the culprit.
- A Rogue DHCP Server Located Issue displays in NetMRI's main Issues table (Network Analysis > Issues) and in the NIOS Task Viewer. Then, after approval, the Isolate Rogue DHCP Server task activates.
Click the Issue name in the Title column; the Issue Viewer appears in a separate browser window. Details of the issue are substantial, including the specific Device IP address, the device MAC and type, the identity of the upstream switch and the upstream interface, and the Last Seen timestamp.
Any previously configured notifications will arrive at the admin's Inbox or through other channels. - Go to the NIOS system and open the Tasks Dashboard.
- Click the Settings icon for the Rogue DHCP Server Remediation task. The NetMRI instance appears in a new browser tab, displaying the Job History page. This is where you track job execution in NetMRI. (For information, see Viewing the Job History and the Job Viewer). The page lists the Locate and Isolate jobs and their results. You can also open the Task Viewer in the NIOS Task Dashboard.