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Objects > SD-WAN Link Management > Path Quality Profile

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Objects > SD-WAN Link Management > Path Quality Profile

Create an SD-WAN path quality profile.

SD-WAN allows you to create a path quality profile for each set of applications, application filters, application groups, services, service objects, and service group objects that has unique network quality requirements and then reference that profile in an SD-WAN policy rule. In the profile, you set maximum thresholds for three parameters: latency, jitter, and packet loss. When an SD-WAN link exceeds any one of the thresholds, the firewall selects a new best path for packets matching the SD-WAN rule where you applied this profile.

The sensitivity setting for each path quality parameter allows you to indicate to the firewall which parameter is more important (preferred) for the applications to which the profile applies. The firewall places more importance on a parameter with a high setting than a parameter with a medium or low setting. For example, some applications are more sensitive to packet loss than to jitter or latency, so you could set packet loss to high sensitivity for the profile associated with those applications, which causes the firewall to examine packet loss first.

If you leave the sensitivity settings for latency, jitter, and packet loss at the default setting (medium) or if you set all three parameters to the same setting, the order of preference for the profile is packet loss, then latency, and then jitter.

By default, the firewall measures latency and jitter every 200ms and takes an average of the last three measurements to measure path quality in a sliding window. You can modify this behavior by selecting aggressive or relaxed path monitoring when you configure an SD-WAN Interface Profile.

	Path Quality Profile Settings
Name	Enter a Name for the path quality profile using any combination and maximum of 31 alphanumeric characters, underscores, hyphens, spaces, and periods.
Latency (ms)	Threshold—Enter the number of milliseconds allowed for a packet to leave the firewall, arrive at the opposite end of the SD-WAN tunnel, and a response packet for that packet to return to the firewall before the threshold is exceeded (range is 10 to 2,000; default is 100).
Latency (ms)	Sensitivity—Select high, medium (default), or low.
Jitter (ms)	Threshold—Enter the average variation, in milliseconds, that SD-WAN packet latencies can vary (range is 10 to 1,000; default is 100). The default jitter threshold of 100ms means that latency measurements can vary by an average of 100ms before the jitter threshold is exceeded.
Jitter (ms)	Sensitivity—Select high, medium (default), or low.
Packet Loss (%)	Threshold—Enter the percentage of packets lost on the link before the threshold is exceeded (range is 1 to 100.0; default is 1).
Packet Loss (%)	Sensitivity—Select high, medium (default), or low.

Objects > SD-WAN Link Management

Objects > SD-WAN Link Management > Traffic Distribution