Quality of Service (QoS) is a data network solution that prioritises network traffic, to ensure that key traffic has precedence over less important traffic during times of congestion.
In order to have a great experience using the internet or any data service, all connected networks (LAN and WAN) must have a properly configured QoS solution to ensure that important traffic such as voice (VoIP/SIP) is not compromised by less important traffic. As shown in the diagram critical traffic like voice may experience issues during periods of contention. Even short bursts of less important traffic (i.e emails) can interfere with critical traffic if not controlled properly.
We highly recommend the Nehos Broadband Managed routing solution in order to be able to correctly control the flow of traffic over your LAN and WAN network. Without properly controlling traffic between Nehos and your site and your equipment (servers, computers and handsets) and your gateway less important traffic on your LAN and over the WAN will interfere with more important traffic such as voice.
QoS solutions can only be implemented on an outbound interface of a router and therefore must take place on both ends of a connection. QoS solutions can only work reliably over a non contended broadband service such as our EoC or fibre service. Customers will find a much improved service using our managed router solution over “contended” services such as Nehos ADSL/NBN services but we can not guarantee that QoS queues will work flawlessly.
For contended services or broadband that uses unreliable technologies (everything but fibre) that internet speeds can vary over time, normal Quality of Service systems can become unreliable and even bring down a internet connection for everyone but one download. Nehos has designed an inteligent system that reguarly (every 24 hours or triggered manually) measures the broadband service maximum throughput and sets the queue speeds accordingly. This way the maximum speed of the queue is set correctly.
For example a 50Mbit NBN service may fluctuate in speed (depending on contention) between 50Mbit to 35Mbit/sec. If the QoS Queue system was set at 45Mbit the service would become unreliable if the maximum speed is less than 45Mbit/sec. A single download could make the internet connection unusable for others.
Most vendors divide the available bandwidth into two or more traffic classifications and then divide the avaliable bandwidth between these classifications. For example, a customer with a 10Mbit/sec by 10Mbit/sec that requires 5Mbit/sec for Remote Desktop would have the service configured as follows:
As you can see that available bandwidth for everything else is only 5Mbit regardless if there is any Remote Desktop traffic on the connection at all. The Nehos system would be configured as follows:
This way normal traffic can use the full capacity of the connection and then be throttled back by the amount of traffic Remote Desktop uses up to 5 Mbit/second. Also Remote Desktop can use the full 10Mbit/second however will have to share the remaining 5Mbit/sec