Meraki also provides the option to define any combination of latency, jitter, OR loss metric values to create custom SD-WAN performance classes.
Pro Tip
“OR” is capitalized here as a hint that calculations are based on a logical OR operator and not all parameters need be defined.
These custom performance classes are available to select for defining SD-WAN uplink decisions just like the default VoIP performance class under the Load Balancing policy discussed previously. One common use case for custom performance classes is to configure a class with application-specific metrics for sensitive web applications such as Office 365, an example of which is shown in Table 6-2.
Table 6-2 Example Custom Performance Class for Office 365 Traffic
Pro Tip
Meraki allows up to six custom performance classes to be defined per network.
Custom performance classes can also be used to route traffic based on custom SLA definitions or traffic service classes, as show in the example in Table 6-3.
Table 6-3 Series of Example Custom Performance Classes Based on Traffic SLA Class
The use of custom performance classes like these allows you to fine-tune a Meraki SD-WAN solution to provide the best performance for a wide variety of use cases in nearly any deployment.
For additional and more detailed information on the default and custom uplink performance classes available in the Dashboard, visit https://documentation.meraki.com and view the article “MX Load Balancing and Flow Preferences” and other related articles.
Pro Tip
You can use custom performance classes for traffic routing in both overlay SD-WAN and standard Internet-bound traffic (the latter is also known as SD-Internet).