eG Monitoring
 

Measures reported by CisSDWCntrlConnTest

In a typical environment where Cisco SD-WAN appliance is deployed, the components are authenticated and validated by establishing a functional overlay network. In the context of a Cisco SD-WAN overlay network, port hopping is the process by which devices/components try different ports when attempting to establish connections with each other, in the event that a connection attempt on the first port fails. After such a failure, the port value is incremented and the connection attempt is retried. If any component fails to authenticate the other component, then the performance of the entire Cisco SD-WAN appliance may be affected.

For example, if the vSmart Controller operating on a data center fails authentication, then, the data center could not be connected over the transport network i.e, through internet, Multiprotocol Label Switching (MPLS), Layer 2 switching, Layer 3 routing, and Long-Term Evolution (LTE), or any mixture of transports. Eventually, the components/devices that are connected to the data center through the vSmart controller may be inaccessible. Similarly, Cisco vBond Orchestrators always use DTLS tunnels to establish control connections with other Cisco vEdge devices, so they always use UDP. If the control connections fail, then the vBond Orchestrators cannot connect to other vEdge devices and other components. Frequent control connection failure indicates performance degradation of the target Cisco SD-WAN appliance. To avoid such connectivity issues and to improve the performance of the Cisco SD-WAN appliance, it is essential to keep a constant vigil on the connections established through the transport network among the components. The CisSDWCntrlConnTest test helps administrators in this regard!

This test auto-discovers the connections established between the components of the target Cisco SD-WAN appliance over a transport network, and for each established connection, reports the status and uptime. Using this test, administrators can figure out the connections that are down and analyze the reason behind such connection failures. By closely monitoring the connections established by each component, administrators can figure out the component that is frequently experiencing connection failures.

Outputs of the test : One set of results for each component:transport network:connection established on the target Cisco SD-WAN appliance that is being monitored.

The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
State Indicates the current state of this connection.   The table below indicates the values that this measure can report and their corresponding numeric equivalents:

Measure Value Numeric Value
Down 0
Up 1

Note:

By default, this measure reports the above-mentioned Measure Values while indicating the current status of the connection. However, the graph of this measure is represented using the corresponding numeric equivalents only-i.e., 0 or 1.
Connection_uptime Indicates the uptime of this connection. Minutes