# How is the interface name fetched by OpManager?

During Interface Discovery, OpManager queries the ifName (.1.3.6.1.2.1.31.1.1.1.1), ifDescr (.1.3.6.1.2.1.2.2.1.2) and ifAlias (.1.3.6.1.2.1.31.1.1.1.18) OIDs and constructs the Interface DisplayName as mentioned in the table below.

| IfDescription | IfAlias | IfName | Interface Display Name |
|---|---|---|---|
| Not null | Not null | - (Any value) | IFDescription-IfAlias |
| Not null | Null | Not null | IFDescription-IfName |
| Not null | Null | Null | IFDescription |
| Null | Not null | Not null | ifName-ifAlias |
| Null | Null | Not null | IfName |
| Null | Null | Null | - |

p.s: The priority is from Top to Bottom.

**Example 1:**

ifDescription - Software Loopback Interface 1  
ifAlias - Loopback Pseudo-Interface 1  
ifName - loopback_1  

**Interface Display name:** Software Loopback Interface 1-Loopback Pseudo-Interface 1

**Example 2:**

ifDescription - Software Loopback Interface 1  
ifAlias - NULL (or) EMPTY  
ifName - loopback_1  

**Interface Display name:** Software Loopback Interface 1-loopback_1

**Example 3:**

ifDescription - NULL (or) EMPTY  
ifAlias - Loopback Pseudo-Interface 1  
ifName - loopback_1  

**Interface Display name:** loopback_1-Loopback Pseudo-Interface 1

![Interface name fetched by OpManager: Display name in device snapshot page](https://www.manageengine.com/network-monitoring/how-to/images/interface-name.png)