Edge operational states
You can monitor an Edge’s status when an operation that takes an Edge offline is under way by checking the State value.
You can check an Edge’s State value on the list that appears on the Edges page.
You can also check an Edge’s State value on the Information panel that appears on the General tab of the Edit Edge page.
Operations that can take an Edge offline include:
- A regularly scheduled automatic software update.
- A manual software update.
- A manual restart.
- A manual shutdown (Take out of service)
A key component of this state display is the call draining feature.
The call draining feature is designed to ensure that all existing active calls on the Edge that is being taken offline are allowed to complete normally before the operation begins. Each type of operation that takes an Edge offline, has a specific timeout period during which the Edge waits for calls to complete normally. If calls complete normally before the timeout period elapses, the Edge begins the operation. If the timeout period elapses before all calls are complete, the Edge will either abort the operation or drop all calls and begin the operation. The action that the Edge performs depends on the type of operation.
For specific details on the Edge operational states and the call draining behavior, see the following articles: