Siemens S223, S323 user manual How to Operate Rule and QoS

User Manual	UMN:CLI
SURPASS hiD 6615 S223/S323 R1.5

7.6Rule and QoS

The hiD 6615 S223/S323 provides rule and QoS feature for traffic management. The rule classifies incoming traffic, and then processes the traffic according to user-defined poli- cies. You can use the physical port, 802.1p priority (CoS), VLAN ID, DSCP, and so on to classify incoming packets.

You can configure the policy in order to change some data fields within a packet or to re- lay packets to a mirror monitor by a “Rule” function. QoS (Quality of Service) is one of useful functions to provide the more convenient service of network traffic for users. It is very serviceable to prevent overloading and delaying or failing of sending traffic by giving priority to traffic.

By the way, you need to be careful for other traffics not to be failed by the traffic config- ured as priority by user. QoS can give a priority to a specific traffic by basically offering the priority to the traffic or limiting the others. When processing data, data are usually supposed to be processed in time-order like first in, first out.

This way, not processing specific data first, might lose all data in case of overloading traf- fics. However, in case of overloading traffics QoS can apply processing order to traffic by reorganizing priorities according to its importance. By favor of QoS, you can predict net- work performance in advance and manage bandwidth more effectively.

7.6.1How to Operate Rule and QoS

For the hiD 6615 S223/S323, rules operate as follows.

•Rule Creation

To classify the packets according to the specific basis, configure the policies about them first. The basis used to classify the packets is 802.1p priority (CoS), VLAN ID, DSCP and port number. Additionally, a unique name needs to be assigned to each rule.

•Rule Priority

Assigns a priority to a rule (precedence to other rules).

•Packet Classification

Configures the policy to adjust how and what is to be classified within transmitted packets.

•Rule Match

Configures the policy classifying the action(s) to be performed if the configured rule classification fits transmitted packet(s).

–mirror transmits the classified traffic to monitor port.

–redirect transmits the classified traffic to specified port.

–permit allows traffic matching given characteristics.

–deny blocks traffic matching given characteristics.

•Rule Apply

Applies the just configured rule. Configured values will be checked and the rule be- comes activated within the system.

!	An already applied rule can not be modified. It needs to be deleted and then created
	again with changed values.

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