# WJH

## nv show system wjh

Shows WJH configuration on the switch. WJH provides real time visibility into network problems.

### Version History

Introduced in Cumulus Linux 5.3.0

### Example

    cumulus@switch:~$ nv show system wjh
                    operational  applied
    ---------------  -----------  -------
    enable                        on
    [channel]
    [packet-buffer]

## nv show system wjh channel

Shows WJH channel configuration on the switch.

### Version History

Introduced in Cumulus Linux 5.3.0

### Example

    cumulus@switch:~$ nv show system wjh channel

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

Shows configuration for the specified WJH channel on the switch.

### Version History

Introduced in Cumulus Linux 5.3.0

### Example

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

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

Shows the configuration for packet drop categories in a WJH channel.

### Version History

Introduced in Cumulus Linux 5.3.0

### Example

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

## nv show system wjh packet-buffer

Shows all dropped packets monitored by WJH and the reason for the drop.

### Version History

Introduced in Cumulus Linux 5.3.0

### Example

    cumulus@switch:~$ nv show system wjh packet-buffer
    #   dMAC  dPort  Dst IP:Port  EthType  Drop group  IP Proto  Drop reason - Recommended action                         Severity  sMAC  sPort    Src IP:Port  Timestamp              VLAN
    --  ----  -----  -----------  -------  ----------  --------  -------------------------------------------------------  --------  ----  -------  -----------  ---------------------  ----
    1   N/A   N/A    N/A          N/A      L1          N/A       Generic L1 event - Check layer 1 aggregated information  Warn      N/A   swp17    N/A          22/11/03 01:00:35.458  N/A
    2   N/A   N/A    N/A          N/A      L1          N/A       Generic L1 event - Check layer 1 aggregated information  Warn      N/A   swp18    N/A          22/11/03 01:00:35.458  N/A
    3   N/A   N/A    N/A          N/A      L1          N/A       Generic L1 event - Check layer 1 aggregated information  Warn      N/A   swp19    N/A          22/11/03 01:00:35.458  N/A
    4   N/A   N/A    N/A          N/A      L1          N/A       Generic L1 event - Check layer 1 aggregated information  Warn      N/A   swp20    N/A          22/11/03 01:00:35.458  N/A