Cisco Systems SRW248G4P manual QoS DiffServ Settings, Class Map

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Chapter 5

Configuring the Switch

The Switch supports a common method of prioritizing layer 3/4 traffic to meet application requirements.. Traffic priorities can be specified in the IP header of a frame using the priority bits in the Type of Service (ToS) octet.. If priority bits are used, the ToS octet may contain six bits for Differentiated Services Code Point (DSCP) service.. When these services are enabled, the priorities are mapped to a Class of Service value by the Switch and the traffic then sent to the corresponding output queue.. Because different priority information may be contained in the traffic, the Switch maps priority values to the output queues in the following manner:

The precedence for priority mapping is DSCP Priority and then Default Port Priority..

To enable DSCP priority mapping, check the DSCP Priority Status Enabled checkbox..

Priority Status  Enables the DSCP priority mapping.. (Enabled is the default setting..)

DSCP to CoS  Maps Differentiated Services Code Point values to CoS values..

Click Save Settings to save the changes..

QoS > DiffServ Settings

QoS > DiffServ Settings

The commands described in this section are used to configure Quality of Service (QoS) classification criteria and service policies.. Differentiated Services (DiffServ) provides policy-based management mechanisms used for prioritizing network resources to meet the requirements of specific traffic types on a per hop basis.. Each packet is classified upon entry into the network based on access lists, IP Precedence, DSCP values, or VLAN lists.. Using access lists allows you to select traffic based on Layer 2, Layer 3, or Layer 4 information contained in each packet.. Based on configured network policies, different types of traffic can be marked for different types of forwarding..

All switches or routers that access the Internet rely on class information to provide the same forwarding treatment to packets in the same class.. Class information can be assigned by end hosts, or switches or routers along the path.. Priority can then be assigned based on a general policy, or a detailed examination of the packet.. However, note that detailed examination of packets should take place close to the network edge so that core switches and routers are not overloaded.. Switches and routers along the path can use class information to prioritize the resources allocated to different traffic classes.. The manner in which an individual device handles traffic in the DiffServ architecture is called per-hop behavior.. All devices along a path should be configured in a consistent manner to construct a consistent end-to-end QoS solution..

Class Map

A class map is used for matching packets to a specified class.. The class map uses the Access Control List filtering engine, so you must also set an ACL to enable filtering for the criteria specified in the class map..

The class map is used with a policy map to create a service policy for a specific interface that defines packet classification, service tagging, and bandwidth policing..

NOTE: One or more class maps can be assigned to a policy map..

Class Name  Name of the class map.. (Range: 1-32 characters)

Type  Only one match command is permitted per class map, so the match-any field refers to the criteria specified by the lone match command..

Description  A brief description of a class map.. (Range: 1- 256 characters)

Add  Creates a new class map using the entered class name and description..

Remove  Removes the selected class from the list..

Edit Class Element  Modifies the class map criteria used to classify ingress traffic..

48-Port 10/100 + 4-Port Gigabit Switch with WebView and Power over Ethernet

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Contents User Guide Table of Contents ACL Appendix a About Gigabit Ethernet and Fiber Optic Cabling Appendix E Contact InformationIcon Descriptions About This GuideOnline Resources Copyright and TrademarksChapter Introduction ChapterFront Panel Chapter Product OverviewSide Panel Back PanelPlacement Options Pre-Installation ConsiderationsOverview Uplinking the Switch Hardware InstallationDesktop Placement Rack-Mount PlacementConfiguring the HyperTerminal Application Chapter Configuration Using Console InterfaceSwitch Main Menu LoginSystem Configuration Menu System ConfigurationUser & Password Settings Management SettingsIP Address Settings IP ConfigurationReboot System Restore System Default SettingsFile Management PoE Configuration Port ConfigurationPort Status Back to Main MenuPort PoE Configuration System PoE ConfigurationPort PoE Status LogoutSetup Summary SetupDevice Information System Information Setup Network SettingsPoE Information IdentificationSet Time Setup TimeEdit Port Settings Port Management Port SettingsPort Management Port Broadcast Control Port Management Link AggregationGlobal Setting Port Management PoE Power SettingsPort Setting Port Management LacpVlan Management Vlan Management Port SettingsVlan Management Create Vlan Create VlanVlan Management Vlan to Ports Vlan Management Ports to VlanStatistics Rmon Statistics StatisticsStatistics Rmon History Statistics Rmon Events Statistics Rmon AlarmsStatistics 802.1x Statistics Statistics Port UtilizationACL MAC based ACL ACL IP based ACLRadius Server Setting Security Authentication ServersSecurity Security ACL BindingTacacs Server Setting Security 802.1x SettingsSecurity Ports Security Security Management ACL Security Https SettingsSecurity SSH Host-Key Settings Security SSH SettingsQoS QoS CoS SettingsCoS to Queue QoS Dscp Settings QoS Queue SettingsQueue Settings Port to CoSClass Map QoS DiffServ SettingsPolicy Map QoS DiffServ Port Binding Spanning TreeQoS Bandwidth Spanning Tree Global STP Spanning Tree STP StatusSpanning Tree STP Port Settings Spanning Tree STP Port Settings STP Port Setting Detail Spanning Tree Rstp Port Settings Spanning Tree Mstp Properties Spanning Tree Mstp Instance SettingsSpanning Tree Mstp Interface Settings Multicast Multicast Static Member Ports Multicast Global SettingsMulticast Member Ports Query Multicast Static Router PortsMulticast Router Ports Query Snmp Global Parameters Snmp Group Profile Snmp ViewsSnmp Group Membership User AuthenticationSnmp Communities Data PrivacyAdmin User Authentication AdminSnmp Notification Recipient SNMPv1,2Static Address Setting Admin Forwarding DatabaseAddress Aging Dynamic Address QuerySystem Logging Admin LogSyslog Smtp Setting Admin Port MirroringAdmin Ping Admin Cable TestAdmin Save Configuration Admin Firmware Upgrade Admin Jumbo FrameAdmin Http Upgrade Admin Factory Default Admin RebootGigabit Ethernet Appendix a About Gigabit Ethernet Fiber Optic CablingFiber Optic Cabling Appendix B Glossary Appendix BGlossary Smtp Simple Mail Transfer Protocol The standard e Appendix B Appendix C Appendix C SpecificationsSpecifications Limited Warranty Appendix D Warranty and Regulatory InformationFCC Statement Safety NoticesIndustry Canada Canada IC StatementDansk Danish Miljøinformation for kunder i EU La Directiva 2002/96/CE de la UE exige que los equipos que Norsk Norwegian Miljøinformasjon for kunder i EU WEB For additional information, please visit Appendix E

SRW248G4P specifications

Cisco Systems SRW248G4P is a high-performance Layer 2 switch designed specifically for small to medium-sized businesses that require robust networking solutions. This switch supports Power over Ethernet (PoE), providing a highly flexible option for powering devices such as IP phones, wireless access points, and surveillance cameras.

One of the standout features of the SRW248G4P is its 48 10/100 Ethernet ports, which ensure ample connectivity for various networked devices. Additionally, it offers four Gigabit Ethernet uplink ports, allowing for seamless integration with existing network infrastructure and facilitating high-speed data transfer. The combination of these ports enables businesses to expand their network capabilities as needed without the immediate requirement for added devices.

The SRW248G4P comes equipped with advanced Layer 2 switching capabilities, including VLAN support, which enables the segmentation of network traffic for improved performance and security. It also supports Spanning Tree Protocol (STP) and Rapid Spanning Tree Protocol (RSTP), which help prevent network loops and ensure redundancy. With features like Link Aggregation Control Protocol (LACP), multiple physical connections can be combined into a single logical link, enhancing bandwidth and providing failover capabilities.

Another critical attribute of the Cisco SRW248G4P is its user-friendly management interface. The switch can be managed through a web-based interface, allowing IT administrators to configure settings, monitor performance, and troubleshoot issues with ease. Additionally, it supports SNMP (Simple Network Management Protocol) for integration with network management systems, further simplifying monitoring tasks.

Power over Ethernet functionality is a significant advantage of the SRW248G4P, providing up to 15.4 watts per port. This capability simplifies installation and reduces the clutter of power cords and outlets. Organizations can deploy PoE-enabled devices in locations that lack power sources, thus enhancing overall flexibility in network design.

In summary, the Cisco Systems SRW248G4P is a feature-rich switch tailored for small to medium-sized enterprises. Its blend of performance, management capabilities, and advanced features like PoE makes it a valuable asset in any organization's networking setup. By ensuring reliable connectivity and ease of management, businesses can focus more on growth and their core objectives rather than worrying about network complexities.
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