# Node status colors

The node status gives more detailed information about individual engines.

Table 1. Node-level status
Color | Node status | Description
--- | --- | ---
Green | Node or server online | The node or server is online.
Green (with slot) | Locked online | The node is locked online to prevent automatic status transitions. The node does not change state unless commanded by an administrator.
Cyan | Standby mode | Used with clustered engines when the cluster is in Standby mode. The node is in standby mode. One of the standby nodes goes online when the previous online node goes to a state in which it does not process traffic.
Purple | Node offline | The node is offline and does not process traffic.
Purple (with slot) | Locked offline | The node is locked offline to prevent automatic status transitions. The node does not change state unless commanded by an administrator.
Gray | Timeout or unknown status | The Management Server does not know the status of the node.
White | Not monitored | An administrator has disabled monitoring for the node.
Gray outline | Under work, no contact to SMC yet | The node is under work and has not contacted the SMC yet.
Green outline | Under work, no first policy upload yet | The node is under work, has contacted the SMC, but the first policy upload has not yet been made.