Unreachable status occurs for either of the following reasons:
◦
The
sdnc
service stopped working or a controller has been rebooted.
◦
A network partition occurred and a controller in a team has become separated from the
other team members.
•
UNKNOWN
A team status cannot be determined and an unknown team status message is displayed:
Unknown status occurs for either of the following reasons:
◦
A communication failure with a REST service component occurred.
◦
A network failure caused the controller to be suspended.
Viewing team configuration and controller status
From the Team screen, the team configuration and controller status (top section) displays the
following fields:
•
IP
: IP address of the controller.
•
Role
: Member or leader. A team can only have one leader and at most 3 controllers.
•
Status
: The status for each controller in the team, which can be one of the following (for
details see
“Controller status ” (page 101)
):
◦
initializing
◦
active
◦
suspended
◦
unreachable
•
Version
: The build version of the controller software running on the controller.
•
CDV
: Core data version. This field is incremented every time the controller experiences a
change in configuration. This field is used to determine which controller to synchronize with
when a controller joins a cluster.
•
CDV Timestamp
: Date and time at which the controller experienced its last change in
configuration.
Viewing region configuration
From the Team screen, the region configuration (middle section) displays the following fields:
•
Name
: Name of the region.
•
Controller by Priority
: First controller (in bold) is the
master
controller for the region. The
master controller handles the flows and packet-ins. The following controllers (grayed out)
are
slaves
. If the highest priority controller is unavailable, HA fails-over to the next highest
priority device in the region configuration for that device.
•
Region UID
: Identifies a region; used by certain REST API commands.
To view a region’s details, select the desired region. In this example,
Region123
is selected:
Viewing your team configuration using the UI
105