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Routing & Switching · Advanced

SLA Class

A Cisco SD-WAN policy object defining maximum loss, latency and jitter for application-aware routing.

Definition

Each SLA class sets thresholds for packet loss, latency and jitter, measured by BFD on every SD-WAN tunnel. SLA classes are referenced by AAR policies; tunnels not meeting the class are not used for the matched application unless no compliant path exists and a fallback is configured.

Example

sla-class REALTIME loss 2 latency 100 jitter 25

Exam tip

Pair SLA thresholds with the voice requirements of 150 ms, 30 ms and 1 percent.

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