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Administration Guide

Performance SLA

Performance SLAs are used to measure the health of links that are connected to SD-WAN member interfaces by either sending probing signals through each link to a server, or using session information that is captured by firewall policies (see Passive WAN health measurement for information), and measuring the link quality based on latency, jitter, and packet loss. If a link fails all of the health checks, the routes on that link are removed from the SD-WAN link load balancing group, and traffic is routed through other links. When the link passes SLA, the routes are reestablished. This prevents traffic from being sent to a broken link and getting lost.

The following topics provide instructions on configuring performance SLA:

Performance SLAs are used to measure the health of links that are connected to SD-WAN member interfaces by either sending probing signals through each link to a server, or using session information that is captured by firewall policies (see Passive WAN health measurement for information), and measuring the link quality based on latency, jitter, and packet loss. If a link fails all of the health checks, the routes on that link are removed from the SD-WAN link load balancing group, and traffic is routed through other links. When the link passes SLA, the routes are reestablished. This prevents traffic from being sent to a broken link and getting lost.

The following topics provide instructions on configuring performance SLA: