Each vSmart controller establishes and maintains a control plane connection with each vEdge router in the overlay network. In a network with multiple vSmart controllers, a single vSmart controller may have connections only to a subset of the vEdge routers, for load-balancing purposes. The control connection, which runs as a DTLS tunnel, is established after device authentication succeeds. The DTLS connection between a vSmart controller and a vEdge router is a permanent connection.
View Summary of Control Connections
- In vManage NMS, select the Dashboard screen.
- Locate the Control Status pane which displays whether vSmart and vEdge devices are connected to the required number of vSmart controllers. Each vSmart controller must connect to all other vSmart controllers in the network. Each vEdge router must connect to the configured maximum number of vSmart controllers. The Control Status pane shows three counts:
- Control Up—Total number of devices with the required number of operational control plane connections to a vSmart controller.
- Partial—Total number of devices with some, but not all, operational control plane connections to vSmart controllers.
- Control Down—Total number of devices with no control plane connection to a vSmart controller.
- For more details, click the More Actions icon to the right of each table row to access the Device Dashboard or Device Details view in the Monitor ► Network screen.
Click any row to display a table with details about the devices, including status, hostname, system IP, total number of control connections, site ID, device model, device type, and how long the device has been operational.
View Control Connections for a Single Device
- In vManage NMS, select the Monitor ► Network screen.
- Locate the device using the Sort options drop-down and the Search box. Or scroll through the list of devices in the device table.
- Select the device by clicking its system IP address.
If you select a controller device—a vBond orchestrator, a vManage NMS, or a Smart controller—the Control Connections screen opens by default.
- If you select a vEdge router, click Control Connections in the left pane. The right pane displays information about all control connections that the device has with other controller devices in the network.
The upper part of the right pane contains the following elements:
- Expected and actual number of connections.
- Control connection data in graphical format. If the device has multiple interfaces, vManage NMS displays a graphical topology of all control connections for each color.
The lower part of the right pane contains the following elements:
- Filter criteria.
- Control connections data in tabular format. By default, the first six control connections are selected. The graphical display in the upper part of the right pane plots information for the selected control connections.
- Click the arrow to the left to view the control connections for that TLOC color.
- Click the checkbox to the left to select and deselect control connections. You can select and display information for a maximum of six control connections at one time.
View Control Connections in Real Time
For vEdge routers, you can view real-time information about its control connections:
- From the Monitor ► Network screen, select the device. The device must be a vEdge router.
- Click Troubleshooting in the left pane.
- From the Connectivity pane, click Control Connections.
The control plane connection information is updated automatically, every 15 seconds.
The upper part of the right pane on the Control Connections screen shows figures illustrates the operational control plane tunnels between the vEdge router and vManage and vSmart controllers.
The lower part of the lower pane contains a table that shows details for each of the control plane tunnels, including the remote device's IP address and the status of the tunnel end points, including the reason for the failure of an end point.
Introduced in vManage NMS in Release 15.2.
In Release 17.2.2, add Monitor ► Network ► Troubleshooting ► Connectivity ► Control Connections for viewing real-time control connection information.