Link Sharing Weight
Link Sharing Weight defines the bandwidth share assigned to a Traffic Rule when WAN links are congested.
In practice, the weight is often expressed as a percentage of the WAN capacity configured on the Site. This percentage does not necessarily mean that the traffic always uses that amount of bandwidth. Instead, it defines how bandwidth is shared between traffic classes when there is congestion.
For example, a business-critical Traffic Rule can be given a higher Link Sharing Weight than guest internet traffic. When the WAN link is congested, QoS uses these weights to give the business-critical class a larger share of the available bandwidth.
Role in the Model
Link Sharing Weight is part of the QoS behavior applied to a Traffic Rule on an Overlay. It works with the Link Sharing Policy to control how traffic uses WAN links.
The Link Sharing Policy—referred to as "Strategy" in the interface when creating the Overlay—determines which WAN links can be used. The Link Sharing Weight determines how bandwidth is shared among traffic classes on these links in the event of congestion.
This approach prioritizes sensitive or strategic applications in the event of congestion, while allowing lower-priority traffic to use the remaining WAN resources.