# WJH

The `nv unset` commands remove the configuration you set with the equivalent `nv set` commands. This guide only describes an `nv unset` command if it differs from the `nv set` command.

## nv set system wjh

Provides commands to configure WJH to provide real time visibility into network problems. You can diagnose network problems by looking at dropped packets.

## nv set system wjh channel <channel-id>

Configures a WJH channel where you want to monitor packet drops.

### Command Syntax

Syntax | Description
--- | ---
`<channel-id>` | The channel name.

### Version History

Introduced in Cumulus Linux 5.3.0

### Example

    cumulus@switch:~$ nv set system wjh channel forwarding

## nv set system wjh channel <channel-id> trigger

Configures the type of packet drops you want to monitor. You can monitor layer 1 (`l1`), layer 2 (`l2`), layer 3 (`l3`), or tunnel (`tunnel1`) related packet drops.

### Command Syntax

Syntax | Description
--- | ---
`<channel-id>` | The channel name.

### Version History

Introduced in Cumulus Linux 5.3.0

### Example

    cumulus@switch:~$ nv set system wjh channel forwarding trigger l3

## nv set system wjh state

Enables and disables the WJH service. The default value is `enabled`.

In Cumulus Linux 5.14 and earlier, you specify `enable on` or `enable off` instead of `state enabled` or `state disabled`.

### Version History

Introduced in Cumulus Linux 5.3.0

### Example

    cumulus@switch:~$ nv set system wjh state enabled