other applications are not protected by QoS, it will detract much from their performance in the overcrowded network. This is especially essential to those are low tolerant of loss, delay or jitter (delay variation).

Another reason is due to congestions at network intersections where speeds of interconnected circuits mismatch or traffic aggregates, packets will queue up and traffic can be throttled back to a lower speed. If there’s no defined priority to specify which packets should be discarded (or in another term “dropped”) from an overflowing queue, packets of sensitive applications mentioned above might be the ones to drop off. How this will affect application performance?

There are two components within Primary configuration of QoS deployment:

zClassification: Identifying low-latency or crucial applications and marking them for high-priority service level enforcement throughout the network.

zScheduling: Based on classification of service level to assign packets to queues and associated service types

The basic QoS implementation in Vigor routers is to classify and schedule packets based on the service type information in the IP header. For instance, to ensure the connection with the headquarter, a teleworker may enforce an index of QoS Control to reserve bandwidth for HTTPS connection while using lots of application at the same time.

One more larger-scale implementation of QoS network is to apply DSCP (Differentiated Service Code Point) and IP Precedence disciplines at Layer 3. Compared with legacy IP Precedence that uses Type of Service (ToS) field in the IP header to define 8 service classes, DSCP is a successor creating 64 classes possible with backward IP Precedence compatibility. In a QoS-enabled network, or Differentiated Service (DiffServ or DS) framework, a DS domain owner should sign a Service License Agreement (SLA) with other DS domain owners to define the service level provided toward traffic from different domains. Then each DS node in these domains will perform the priority treatment. This is called per-hop-behavior (PHB). The definition of PHB includes Expedited Forwarding (EF), Assured Forwarding (AF), and Best Effort (BE). AF defines the four classes of delivery (or forwarding) classes and three levels of drop precedence in each class.

Vigor routers as edge routers of DS domain shall check the marked DSCP value in the IP header of bypassing traffic, thus to allocate certain amount of resource execute appropriate policing, classification or scheduling. The core routers in the backbone will do the same checking before executing treatments in order to ensure service-level consistency throughout the whole QoS-enabled network.

However, each node may take different attitude toward packets with high priority marking since it may bind with the business deal of SLA among different DS domain owners. It’s not easy to achieve deterministic and consistent high-priority QoS traffic throughout the whole network with merely Vigor router’s effort.

In the Bandwidth Management menu, click QoS Control List to open the web page.

140

Vigor2130 Series User’s Guide

Page 147 Page 149
Page 148
Image 148
Draytek 2130 manual 140
Page 147 Page 149

2130 specifications

The DrayTek Vigor 2130 is a versatile and powerful router known for its robust features and performance, making it ideal for small to medium-sized businesses and home offices. This dual WAN router stands out due to its reliability and extensive management capabilities, which cater to users seeking both performance and flexibility.

One of the hallmark features of the Vigor 2130 is its dual WAN support, allowing for load balancing and automatic failover. This means that users can connect two internet sources, such as DSL and fiber, to ensure continuous internet availability and enhance overall bandwidth. The router can intelligently distribute traffic across both connections or switch to a backup line seamlessly if one connection fails, ensuring uninterrupted online activities.

Additionally, the DrayTek Vigor 2130 incorporates advanced security features that are essential for protecting sensitive data in a business environment. It comes equipped with a stateful packet inspection firewall, intrusion detection and prevention systems, and Virtual Private Network (VPN) support, allowing secure remote access for employees and clients. The router supports multiple VPN protocols, including PPTP, L2TP, and IPSec, which enhances connectivity for users working from various locations.

The router also features Quality of Service (QoS) functionalities, enabling users to prioritize bandwidth for critical applications and services. This ensures that essential tasks like VoIP calls or video conferencing run smoothly without interruptions. The Vigor 2130 supports VLANs, allowing businesses to segment their networks for better resource management and security.

On the connectivity front, the Vigor 2130 offers multiple Ethernet ports, including gigabit LAN and WAN ports, providing ample opportunities for wired connections. For wireless needs, the router includes built-in wireless capabilities that support IEEE 802.11n, providing robust Wi-Fi coverage and decent speeds.

With a user-friendly interface and comprehensive logging features, network management becomes intuitive. The Vigor 2130 also supports remote management, enabling IT administrators to configure settings and monitor the network from anywhere, which is particularly useful for businesses with limited on-site IT staff.

In conclusion, the DrayTek Vigor 2130 is a reliable solution that combines performance, security, and ease of management. Its dual WAN capability, robust security features, and advanced management options train organizations to navigate the complexities of modern networking effortlessly. Whether for home use or a small business environment, the Vigor 2130 delivers a comprehensive set of features that meets the needs of modern users.
Top Page Image Contents