Linksys SLM248G4S (G5), SLM224G4S (G5) manual QoS CoS Settings, CoS Default, Chapter

Chapter 5 Configuration Using the Web-based Utility

Usage Type  This is the RADIUS server authentication type. The possible values are:

•Login  (Default value) Indicates that the RADIUS server is used for authenticating user name and passwords.

•802.1X  Indicates that the RADIUS server is used for 802.1X authentication.

•All  Indicates that the RADIUS server is used for authenticating user name and passwords, and 802.1X port authentication.

Click Add to List to add the RADIUS configuration to the RADIUS table at the bottom of the screen.

Click Save Settings to save the changes, or Cancel Changes to cancel the changes.

QoS

Network traffic is usually unpredictable, and the only basic assurance that can be offered is best effort traffic delivery. To overcome this challenge, Quality of Service (QoS) is applied throughout the network. This ensures that network traffic is prioritized according to specified criteria, and that specific traffic receives preferential treatment. QoS in the network optimizes network performance and entails two basic facilities:

Classifying incoming traffic into handling classes, based on an attribute, including:

•The ingress interface

•Packet content

•A combination of these attributes

Providing various mechanisms for determining the allocation of network resources to different handling classes, including:

•The assignment of network traffic to a particular hardware queue

•The assignment of internal resources

•Traffic shaping

The terms Class of Service (CoS) and QoS are used in the following context:

•CoS provides varying Layer 2 traffic services. CoS refers to classifying traffic into traffic classes, where each class is handled as an aggregate whole, with no per-flow settings. CoS is usually related to the 802.1p service that classifies flows according to their Layer 2 priority, as set in the VLAN header.

•QoS refers to Layer 2 traffic and above. QoS handles per-flow settings, even within a single traffic class.

The QoS configuration options are CoS Settings, Queue Settings, DSCP Settings, and Basic Mode.

QoS > CoS Settings

The CoS Settings screen is used to enable or disable CoS.

QoS > CoS Settings

CoS Settings

QoS Mode  Indicates if QoS is enabled. The possible values are:

•Disable  Disables QoS.

•Basic  Enables QoS. This is the default value.

Class of Service  Specifies the CoS priority tag values, where 0 is the lowest and 7 is the highest.

Queue  Defines the traffic forwarding queue to which the CoS priority is mapped. Four traffic priority queues are supported.

Click Restore Defaults to restore the device factory defaults for mapping CoS values to a forwarding queue.

CoS Default

Unit No.  The unit to which the CoS configuration applies.

Default CoS  Determines the default CoS value for incoming packets for which a VLAN tag is not defined. The possible field values are 0-7. The default CoS is 0.

LAG  The LAG to which the port belongs, if relevant. If the port is a member of a LAG, the LAG settings override the port settings.

Click Save Settings to save the changes, or Cancel Changes to cancel the changes.

24/48-Port 10/100 + 4-Port Gigabit Resilient Clustering Smart Switch with 2 Combo SFPs 32