Quality Of Service; Hierarchical Token Bucket (Htb); Class Configuration - D-Link DRO-210i User Manual

Broadband business gateway

Hide thumbs Also See for DRO-210i:

Table of Contents

Quality of Service

Traffic control in a network can be achieved by Quality of Service (QoS) algorithms,

which involves guiding the packets based on some predefined rules. Traffic control

classifies packets and places them in individual flows or classes. It can then police by

limiting the number of packets transmitted and/or schedule the packets in different order

of priority for transmission.

The QoS algorithms in the router can apply prioritization rules on traffic which are

passing through the router. However, the traffic will need to be prioritized at every hop

router until it reaches its destination to ensure good quality of service. This can be

achieved by ensuring that the TOS octet in IP header is set appropriately. Every hop

router can prioritize traffic based on the TOS octet value in the packet's IP Header.

HTB is a classful queuing algorithm which provides rate limiting, guaranteed bandwidth

and prioritization of the traffic. HTB ensures that the amount of service provided to each

class is at least the minimum of the amount it requests and the amount assigned to it.

When a class requests less than the amount assigned, the remaining (excess) bandwidth is

distributed to other classes which request service and which have highest priority.

To enable this feature, the administrator can configure the total interface bandwidth and

different classes with the total bandwidth shared among them. Subsequently filters need

to be configured to match the traffic to flow through the different classes.

The administrator should configure a Root Node first, by specifying the interface

bandwidth (upstream link bandwidth) and the default class to be used for unclassified

traffic. Subsequently, Class Nodes can be added and the interface bandwidth can be

distributed among these classes.

Select QoS → → → → HTB Configuration to enter the HTB QoS Configuration. Select Node

as Root to configure the HTB Root Settings.

Table of Contents