SD-WAN Passthrough Sites Test

Passthrough service on the Citrix SD-WAN appliance manages traffic that is to be passed through the Virtual WAN. Traffic directed to the Passthrough service includes broadcasts, ARPs and other non-IPv4 traffic. When the target SD-WAN appliance receives the request to transmit the data/packets using the Passthrough service, it simply passes the traffic to the destination without any shaping or modification or delay. However, administrators should ensure that the Passthrough traffic does not consume substantial resources on the WAN links that the appliance is configured to use for other services. Therefore, it becomes necessary that the traffic routed using the Passthrough service should be continuously tracked to keep the Passthrough traffic flow in check. This is where the SD-WAN Passthrough Sites test helps administrators!

This test continuously monitors the Passthrough traffic that administrators want to transmit unchanged through the target SD-WAN appliance. With the help of this test, administrators can find out the rate at which the data/packets were transmitted/received and the data/packets dropped while transmitting/receiving through the Passthrough service. These statistics are useful for administrators to detect heavy Passthrough traffic at the earliest and prevent the traffic congestion that may affect the business -critical transactions over the target appliance.

Target of the test : A Citrix SD-WAN

Agent deploying the test : A remote agent

Outputs of the test : One set of results for the target Citrix SD-WAN appliance.

Configurable parameters for the test

Parameter	Description
Test Period	How often should the test be executed. By default, this is set to 5 minutes.
Host	The IP address of the target SD-WAN appliance for which this test is to be configured.
Port	Refers to the port at which the target SD-WAN listens to. By default, this will be NULL.
Timeout	Specify the time duration (in seconds) beyond which this test should time out in the Timeout text box. The default is 10 seconds.

Measurements made by the test

Measurement	Description	Measurement Unit	Interpretation
Data received	Indicates the rate at which the data was received for transmission using the Passthrough service configured on the target appliance.	Mbps	It is always recommended that the Passthrough traffic be limited as much as possible. Therefore, a very high value reported for these measures is a cause for concern. It indicates that Passthrough traffic is using high bandwidth rather than the critical applications. As a result, key business transactions will be delayed and the reliability of the target appliance will become questionable.
Data transmitted	Indicates the rate at which the data was transmitted for reception using the Passthrough service.	Mbps
Data dropped	Indicates the rate at which the data was dropped while transmitting/receiving using the Passthrough service.	Mbps
Packets received	Indicates the rate at which the packets were received for transmission using the Passthrough service.	Packet/sec
Packets transmitted	Indicates the rate at which the packets were transmitted for reception using the Passthrough service.	Packet/sec
Packets dropped	Indicates the rate at which the packets were dropped while transmitting/receiving using the Passthrough service.	Packet/sec