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To show the connection between two devices on an Orion map, you need to meet the following requirements1:

• The devices must be monitored by NPM.
• The devices must support topology and be interconnected.
• The devices must have the corresponding interfaces monitored and identified as full or half duplex.
• The Orion Maps feature must be enabled and configured.

If you do not see the connection between two devices on an Orion map, you should first verify that you are monitoring Layer 2 and 3 topologies for the devices. You can do this by checking the NPM Network Topology widget on the device details page. This widget will reflect what connections will be automatically drawn in Orion Maps2. If the widget does not show the expected connection, you may need to enable topology polling for the devices or check the SNMP credentials and configuration3.

If you are monitoring the correct topologies and still do not see the connection, you can build a custom connection between the devices using the Orion Maps feature. In the Map Editor, you can add the two devices to the canvas, select them, and click the Connect Objects button. Here you can specify the interface on either side and choose to add the manual connection to the database2.

Building a new Orion map and adding the related entities instead of the nodes will not resolve the issue, as the related entities are based on the same topology data as the nodes. Changing the monitoring method from SNMP to CLI will not resolve the issue, as CLI is not supported for topology polling3.

References: Orion Maps; Orion Map Devices not connect - Forum; Polling methods used by Orion.

You can make bulk changes to nodes in NPM using the Manage Nodes feature. This allows you to select multiple nodes and edit their properties, such as the polling method, the polling frequency, the SNMP credentials, the custom properties, and more. You can also use the Edit Nodes feature to assign or unassign pollers to nodes, such as the Universal Device Poller (UnDP), the Hardware Health Poller, the Wireless Poller, and more12. References: 1: Change the polling method for a node3, 2: Manage pollers using Device Studio4

 By default, Orion NPM retains Syslog messages in the database for seven days before discarding them. This means that any Syslog messages older than seven days are deleted from the database and cannot be viewed or searched in the web console. To change the default Syslog retention period, you need to modify the Database Settings on the Orion Polling Settings page in the web console. You can also use the Database Manager tool to manually delete or archive Syslog messages from the database. References: SolarWinds SCP Study Aid - NPM, page 19; NPM Administrator Guide, page 111.

Orion Maps 2.0 supports displaying Palo Alto firewalls as network devices, along with their interfaces, zones, policies, and traffic data. You can also view the firewall status, alerts, and events on the map. To add a Palo Alto firewall to an Orion Map, you need to have Network Insight for Palo Alto enabled in NPM, and discover the firewall using SNMP and API polling. References: Orion Maps 2.0, New Alerting, and Palo Alto Networks Monitoring - SolarWinds Lab Episode #77, SolarWinds Lab Episode 77: Orion Maps 2.0, New Alerting, and Palo Alto Networks Monitoring - Orange Matter, Network Insight for Palo Alto Networks in NPM