Dell PC2724, PC2748, PC2708, PC2716 manual Defining CoS Settings, Configuring QoS Settings

Page 71

Defining CoS Settings

Class of Service global parameters are set from the CoS Settings page.

Configuring QoS Settings

The CoS Settings page contains fields for enabling or disabling CoS. In addition, the Trust mode can be selected. The Trust Mode relies on predefined fields within the packet to determine the egress queue. To open the page, click CoS Settings in the tree view.

Figure 7-1. CoS Settings

Trust Mode — Defines which fields within the packet are used to determine the egress queue. When no rules are defined, the traffic containing the predefined CoS or DSCP packet field is mapped according to the selected trust mode. Traffic not containing a predefined packet field is mapped to the best effort queue (q2). The possible Trust Mode field values are:

None— All traffic is mapped to the best effort queue (q2).

CoS — The egress queue assignment is determined by the IEEE802.1p VLAN priority tag (VPT) or by the default VPT assigned to a port. This is the trust default value.

DSCP — The egress queue assignment is determined by the DSCP field. Interface — The specific port or LAG to configure.

Disable "Trust" Mode on Interface — Disables Trust mode on the specified interface. This setting overrides the Trust mode configured on the Ethernet switch globally.

Set Default CoS For Incoming Traffic To — Sets the default CoS tag value for untagged packets. The CoS tag values are 0-7. The default value is 0.

71

Image 71

Contents User’s Guide October Contents Using the Dell OpenManage Switch Administrator Viewing Statistics Contents Gigabit Ethernet Ports IntroductionSystem Description 48 1-Gigabit Ethernet Ports 16 1-Gigabit Ethernet Ports24 1-Gigabit Ethernet Ports + 2 SFP Combo ports Management Modes FeaturesGeneral Features Head of Line Blocking PreventionAutoMDI/MDIX Support Virtual Cable Testing VCTAuto Negotiation Jumbo Frames SupportLayer 2 Features MAC Address Supported FeaturesClass of Service CoS Features Vlan Supported FeaturesPort Default Settings Ethernet Switch Management FeaturesPage Hardware Description Switch Port ConfigurationsPowerConnect 2708 Back Panel PowerConnect 2724 Back Panel PowerConnect 2748 Back Panel LED Definitions Physical DimensionsPower LED Managed Mode LED10/100/1000BASE-T Port LEDs Fan LED 2748 onlyPort LEDs SFP Port LED Managed Mode ButtonRJ-45 Connections for 10/100/1000BASE-T Ports Switch Ventilation FanCables, Port Connections, and Pinout Information 1000BASE-T Cable RequirementsSFP Ports Pin Connections for SFP Interfaces Power ConnectorsInternal Power Supply Connector Overview Installing the Dell PowerConnectInstallation Precautions Unpacking SafetySite Requirements Unpacking the Device Package ContentsHandling Static Sensitive Devices Mounting the Device Installing the Device in a Rack Installing the DeviceInstalling the Device on a Wall Installing the Device on a Flat SurfaceMounting Device on a Wall Connecting the Device to AC Power SupplyBack Panel Power Connector Connecting the Device to the NetworkInitial Configuration Starting and Configuring the Dell PowerConnectViewing Switch Operation Login Screen Click Apply Changes Page Understanding the Interface Using the Dell OpenManage Switch AdministratorInterface Components Description Information Buttons Using the OpenManage Switch Administrator ButtonsPowerConnect Switch Management Buttons Starting the Application PowerConnect Switch Management Buttons DescriptionReset Resetting the DeviceDisplaying Configuration on Demand Viewing the Switch Status Configuring System InformationDefining Switch Information Viewing System IP Address Defining Switch InformationIP Addressing Updating Static IP AddressConfiguring Dhcp Client Interface Configuration Defining Interface ConfigurationPage Viewing Jumbo Frames Configuring the InterfaceOpen the Interface Configuration Enabling Jumbo Frames Creating Vlan MembershipOpen the Vlan Membership Defining Vlan Interface SettingsShowing/Creating VLANs Removing VLANsOpen the Vlan Interface Settings Configuring LAG MembershipUpdating the Vlan Interface Settings Adding a Port to a LAG Open the LAG Aggregation ConfigurationManaging System Files Downloading Files from Server Downloading Files From ServerFirmware Download File Download PowerConnect 2748 Switch ConfigurationUploading Files Configuration DownloadCopying Files Open the File Upload to ServerClick Restore Company Factory Defaults Click Apply Changes Restoring Company Factory Default SettingsOpen the Local User Database Assigning Access Level User RightsLocal User Database Deleting a User from the Local User Database Integrated Cable Test for Copper CablesAdding a User to the Local User Database Click Test Now Running Integrated Cable TestOpen the Integrated Cable Test Open the Optical Transceiver Diagnostics Optical Transceivers DiagnosticsDisplaying Optical Transceivers Diagnostics Test Results Open the Port Mirroring Port MirroringClick show All Adding a Port Mirroring SessionEnabling Storm Control Configuring Storm Control on the PowerConnectConfiguring Storm Control on the PowerConnect 2716/2724 Modifying PowerConnect 2708 Storm Control Port ParametersFollowing describes Storm Control for PowerConnect Modifying PowerConnect 2748 Storm Control Port Parameters VPT Tag Classification Information Configuring Quality of ServiceQuality of Service QoS Overview CoS Services Configuring QoS Settings Defining CoS SettingsMapping CoS Values to Queues Configuring the Trust ModeMapping a Dscp value and assigning priority queue Mapping Dscp Values to QueuesMapping a CoS value to a Queue Page Rmon Statistics Viewing StatisticsOpen the Rmon Statistics Viewing Interface StatisticsGlossary Dhcp Client Class of ServiceDuplex Mode Broadcast StormGigabit Ethernet Flow ControlFragment FrameLayer Ingress PortIP Address Jumbo FramesMulticast Managed ModeMAC Layer MaskPage Router Startup ConfigurationSwitch QoSWildcard Mask TrunkingUnicast