• SonicOS 7.0

About SLA Class Objects

A SLA Class specifies the SLA criterion for selecting the optimal path. It could be the:

• Best latency/jitter/packet loss among the existing paths.
• SLA Class Object that defines the metric thresholds for any combination of latency, jitter and packet loss.

You use SD-WAN SLA Class Objects to configure the desired SLA characteristics for the application/traffic categories. These objects are used in the Path Selection Profile to automate the selection of paths based on these metrics.

These are the default SLA Class Objects:

• Lowest Jitter
• Lowest Latency
• Lowest Packet Loss

These default SLA Class Objects cannot be edited or deleted.

You can configure custom SLA thresholds that best meet the needs of your application/traffic categories with custom SLA Class Objects. You can include or exclude the Latency, Jitter, or Packet Loss attributes in your custom object, although you cannot exclude all three attributes in the same object. When excluded, the value of that attribute is not used as a criterion or threshold when determining whether a particular path is qualified or not. For example, if you want to evaluate a particular path only on the Latency attribute but you don’t care about the other attributes, you can include Latency and exclude Jitter and Packet Loss in your custom object.

When SonicOS is upgraded to 7.0 from a previous version, all existing custom SLA class objects are upgraded with the Include option enabled for Latency, Jitter, and Packet Loss.

NAME	Name of the SLA Class Object
LATENCY (MS)	Threshold time for the round trip delay for the probes sent through a particular path/interface to reach the probe target and acknowledge back, in milliseconds. For the Lowest Latency SLA Class Object, the time is always LOWEST; for the other default SLA Class Objects, a hyphen (–) displays.
JITTER (MS)	Threshold variation in the latency measurements for the probes through a particular path/interface, in milliseconds. For the Lowest Jitter SLA Class Object, the time is always LOWEST; for the other default SLA Class Objects, a hyphen (–) displays.
LOSS (%)	Threshold percentage of probes that are missed of the probes sent through a particular path/interface. For the Lowest Packet Loss SLA Class Object, the percentage is always LOWEST; for the other default SLA Class Objects, a hyphen (–) displays.
COMMENT	Displays the comment entered when the SLA Class Object was configured.