Limitation List

Display a list of specific limitations that you set on this web

 

page.

Start IP

Define the start IP address for limit bandwidth.

End IP

Define the end IP address for limit bandwidth.

TX limit

Define the limitation for the speed of the upstream. If you do

 

not set the limit in this field, the system will use the default

 

speed for the specific limitation you set for each index.

RX limit

Define the limitation for the speed of the downstream. If you

 

do not set the limit in this field, the system will use the default

 

speed for the specific limitation you set for each index.

Add

Add the specific speed limitation onto the list above.

Edit

Allows you to edit the settings for the selected limitation.

Delete

Remove the selected settings existing on the limitation list.

Index (1-15) in Schedule

You can type in four sets of time schedule for your request.

Setup

All the schedules can be set previously in Application –

 

Schedule web page and you can use the number that you

 

have set in that web page.

3.6.3 Quality of Service

Deploying QoS (Quality of Service) management to guarantee that all applications receive the service levels required and sufficient bandwidth to meet performance expectations is indeed one important aspect of modern enterprise network.

One reason for QoS is that numerous TCP-based applications tend to continually increase their transmission rate and consume all available bandwidth, which is called TCP slow start. If 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.

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Vigor2910 Series User’s Guide

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Draytek 2910 manual Quality of Service, TX limit, RX limit
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2910 specifications

The DrayTek 2910 is a versatile and robust router designed primarily for small to medium-sized businesses, offering a wide array of features that cater to various networking needs. With its advanced capabilities, it delivers superior performance and flexibility for organizations that demand reliable internet connectivity.

One of the defining characteristics of the DrayTek 2910 is its dual WAN capabilities. This allows users to connect two different internet service providers, ensuring that the network remains operational even if one connection fails. The router can automatically switch between the WANs, providing seamless failover and load balancing. This feature is essential for businesses that require constant uptime and reliability.

The DrayTek 2910 is equipped with multiple Ethernet ports, enabling it to support various devices and create a robust local area network (LAN). The router includes VLAN support, which allows for the segmentation of the network into different virtual networks, enhancing security and performance by isolating sensitive data traffic.

Another notable aspect of the DrayTek 2910 is its comprehensive security features. It includes a built-in firewall, which protects the network from external threats and unauthorized access. The router supports various protocols, including VPN (Virtual Private Network), allowing secure remote access to the network. This capability is particularly beneficial for businesses with remote workers or those needing secure connections for branch offices.

DrayTek has also integrated advanced Quality of Service (QoS) features in the 2910, which prioritize bandwidth allocation to critical applications, ensuring that essential services receive the needed resources. This is crucial for maintaining the performance of VoIP (Voice over Internet Protocol) calls and video conferencing tools, which are increasingly vital in today’s business environment.

In terms of management, the DrayTek 2910 offers easy configuration through a user-friendly web interface, allowing administrators to set up and monitor the network with minimal effort. The device also supports TR-069 for remote management, enabling service providers to configure and monitor the router without requiring an on-site visit.

Overall, the DrayTek 2910 stands out for its blend of reliability, security, and performance, making it an excellent choice for businesses looking to enhance their networking capabilities while ensuring a secure and efficient operation. With its rich set of features and technologies, the DrayTek 2910 continues to be a preferred router for many organizations worldwide.
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