The CV-CUE service is available as a container on the Arista CloudVision platform. Once you activate the CV-CUE service, you can configure, monitor, troubleshoot, and upgrade Arista WiFi access points using the cognitive CV-CUE UI.

CV-CUE Architecture provides a conceptual overview of the Arista CV-CUE solution.

Figure 1. CV-CUE Architecture

CV-CUE is containerized within the CV whether it's CVA (CV on a CV appliance) or a standalone CV VM. The CV-CUE service runs on both single-node CV and CV cluster. In case of a CV cluster, CV-CUE operates as a single logical instance in High Availability mode (HA-mode).

CV-CUE HA Mode Operation

When setting up CV-CUE for the first time, it must be enabled on all the nodes of a cluster. Once CV-CUE is enabled, then at boot time, the CV-CUE service on the primary node automatically becomes the Active instance, and the one on the secondary node becomes the Standby instance. The HA failover and recovery mechanisms work exactly as expected. That is, if the primary node goes down, the CV-CUE instance on the secondary node becomes active. When the primary node rejoins the cluster, a split-brain recovery kicks in and re-elects the new active and standby containers.

Key Features of CV-CUE on CV

Except for OS and kernel processes, the CV-CUE service on CV runs all the application processes required to manage Arista CV-CUE and wireless intrusion prevention system (WIPS). Some key features of the CV-CUE service are as follows:

  • CV-CUE uses ports 3851 and 161 (both UDP) for all CV communication with external entities. These ports need to be opened in your network.
  • CV-CUE consists of two key components:
    • wifimanager, the server that manages the CV-CUE network.
    • aware, the cognitive CV-CUE UI of the server.

Capacity of CV-CUE on CV

The table below shows the number of access points (APs) that a CV-CUE container supports for the given CPU, RAM, and hard disk settings. The CPU and RAM values displayed in this table are the default settings for a DCA-200 device; the actual capacity may vary based on deployment, environment, and load.

Table 1. Capacity of CV-CUE on CV
Setting Up to 5000 APs
CPU 8 Core
Hard Disk 250 GB