QoS Appliance

Overview

The quality of service, or QoS designates a mechanism making it possible to ensure the prioritization of the most important flows in a limited bandwidth. Customers who use their BVPN access to connect to their information system hosted on Cloud Avenue may encounter contention problems when the bandwidth subscribed to the site's BVPN access is limited. "Real-time" type applications, most of the time communication applications (telephony over IP, videoconferencing, etc.), will suffer greatly from this contention and will have a significant drop in sound and image quality. .

To avoid this, Quality of Service mechanisms must be put in place, in order to prioritize the most critical flows.

Implementation

A QoS Appliance is deployed between the T0 VRF and the BVPN Galerie network access router. Outgoing flows are filtered and prioritized based on the DSCP marking of network frames. The QoS Appliance is deployed in HA (2 VMs in a cluster), hosted in the Service Zone and managed by Cloud Avenue.

Prerequisites

Critical applications must mark flows according to the DSCP standard. For more information on DSCP, visit this page:

https://fr.wikipedia.org/wiki/Differentiated_Services_Code_Point

Set up

The order is made from the Customer Area, using a change request for the moment.

Billing

The QoS Appliance (QoSa) is deployed on demand, and is billed monthly, depending on the model chosen. There are three models:

QoSa model	Max throughput of the appliance
Small	50 Mbps
Large	500 Mbps
X-Large	2 Gbps

See the tariff sheet for the price.

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