Ha-VIS mCon Management Software Overview Quality of Service (802.1p, DiffServ) Quality of Service (QoS) is a technology for managing network traffic in a cost effective manner to enhance network performance and reliability of the application. QoS allows the priorization of the network traffic to assure quality and performance at any time. For example, QoS technologies can be applied to prioritize traffic for latency-sensitive applications (such as automation protocols and voice or video) and to control the impact of latencyinsensitive traffic. The IEEE 802.1p standard provides up to eight traffic classes which can be configured via the management software. The queuing scheme and the way the traffic will be handled inside the switch can adapted to the requirements of the application. TrafficPriorization High Medium Normal Low Traffic priorization for time critical applications Ha-VIS mCon Virtual LAN (VLAN) As networks have grown in size and complexity, the claim to segment these networks increased rapidly. To avoid the rise of costs and complexity of the devices, the segmentation and separation of different network groups should be established by virtual local area networks (VLANs). This functionality provides a way of structuring and organize the network. Basically, a VLAN is a collection of nodes that are grouped together in a single broadcast domain that is not based on physical location of the devices. VLANs logically segment the shared media LAN and forming virtual workgroups. The different VLANs will send and receive data only to devices which are members of this special LAN. HARTING Ha-VIS mCon switches support up to 4094 VLAN tags and conforms with IEEE standard 802.1Q. The use of VLANs will have the following benefits: * Security - Separating systems that have sensitive data from the rest of the network * Performance/Bandbreite - Limitation and administrativ control of the network * Broadcasts/Traffic-flows - VLANs does not pass broadcast traffic to nodes that are not part of the VLAN, it automatically reduces broadcasts 01 138 VLAN 1 VLAN 2 VLAN 3 Traffic management with VLANs