With interface mapping, you can see how two network devices (for example switch or firewall) are connected through interfaces. 

Requirements

• Import the ‘Interface Mapping’ package provided by LogicMonitor in the LM Exchange.

Import LogicModules

From the LogicMonitor repository, import all Interface Mapping LogicModules, which are listed in the LogicModules in the Package section of this support article. If these LogicModules are already present, ensure you have the most recent version.

LogicModules in Package

LogicMonitor’s package for Network Topology consists of the following LogicModules. For full coverage, ensure that all of these LogicModules are imported into your LogicMonitor platform.

Display Name	Type	Description
SNMP_Network_Interfaces	DataSources	Collects network interface performance and operational stats.
WinIf-	DataSources	Windows interface statistics
addCategory_TopoSwitch	PropertySources	Finds and tags switches capable of supporting topology discovery.Requires collector version 30.000 or greater.
addERI_Device (and any other vendor specific ERISources like addERI_Cisco)	PropertySources	Sets device External Resource IDs (ERIs) for layer 2 topology mapping of Cisco devices, including CDP global device ID using CISCO-CDP-MIB, LLDP local system name using LLDP-MIB, and MAC addresses using RFC1213-MIB.   Sets ERI Type (ERT) by parsing the device’s properties for defined keywords, defaults to “Unknown” if not determined.
addERI_Windows	PropertySources	Sets device External Resource IDs (ERIs) for isWindows() using WMI for layer 2 topology mapping, including device interface MAC addresses. Sets ERI Type (ERT) by parsing the device’s properties for defined keywords, defaults to “PhysicalServer” if not determined.Requires collector version 30.000 or greater.
Networking_L2_snmpSwitch	TopologySources	Extracts layer 2 topologies from SNMP enabled switches.Requires collector version 30.000 or greater.

Viewing Interface Mapping

1. Navigate to Mappings > Saved Maps and select the required map.

2. Click on the required connection for which you want to check the connection details.

A Connection Details tab along with the connection details map is displayed:

3. Click the Connection Details tab to view the properties of the interfaces.

4. You can view the connection details map that shows the connection between two resources.

5. Click the More Options icon located in the upper-right corner of the Mapping page and select “Header Graph”.

6. Click Header Graph to view visual grouping alerts.

You can check the alerts on the Connection Details map for different time series.