Moxa Technologies EDS-405A, EDS-408A Ieee 802.1p Priority Level Ieee 802.1D Traffic Type

Page 51

EDS-408A/405A Series User’s Manual

Featured Functions

yIEEE 802.1D—a layer 2 marking scheme.

yDifferentiated Services (DiffServ)—a layer 3 marking scheme.

IEEE 802.1D Traffic Marking

The IEEE Std 802.1D, 1998 Edition marking scheme, which is an enhancement to IEEE Std 802.1D, enables Quality of Service on the LAN. Traffic service levels are defined in the IEEE 802.1Q 4-byte tag, which is used to carry VLAN identification as well as IEEE 802.1p priority information. The 4-byte tag immediately follows the destination MAC address and Source MAC address.

The IEEE Std 802.1D, 1998 Edition priority marking scheme assigns an IEEE 802.1p priority level between 0 and 7 to each frame. This determines the level of service that type of traffic should receive. Refer to the table below for an example of how different traffic types can be mapped to the eight IEEE 802.1p priority levels.

IEEE 802.1p Priority Level

IEEE 802.1D Traffic Type

0

Best Effort (default)

1

Background

2

Standard (spare)

3

Excellent Effort (business critical)

4

Controlled Load (streaming multimedia)

5

Video (interactive media); less than 100 milliseconds

 

of latency and jitter

6

Voice (interactive voice); less than 10 milliseconds of

 

latency and jitter

7

Network Control Reserved traffic

Even though the IEEE 802.1D standard is the most widely used prioritization scheme in the LAN environment, it still has some restrictions:

yIt requires an additional 4-byte tag in the frame, which is normally optional in Ethernet networks. Without this tag, the scheme cannot work.

yThe tag is part of the IEEE 802.1Q header, so to implement QoS at layer 2, the entire network must implement IEEE 802.1Q VLAN tagging.

It is only supported on a LAN and not across routed WAN links, since the IEEE 802.1Q tags are removed when the packets pass through a router.

Differentiated Services (DiffServ) Traffic Marking

DiffServ is a Layer 3 marking scheme that uses the DiffServ Code Point (DSCP) field in the IP header to store the packet priority information. DSCP is an advanced intelligent method of traffic marking because you can choose how your network prioritizes different types of traffic. DSCP uses 64 values that map to user-defined service levels, allowing you to establish more control over network traffic.

Advantages of DiffServ over IEEE 802.1D are:

yConfigure how you want your switch to treat selected applications and types of traffic by assigning various grades of network service to them.

yNo extra tags are required in the packet.

yDSCP uses the IP header of a packet and therefore priority is preserved across the Internet.

yDSCP is backward compatible with IPV4 TOS, which allows operation with existing devices that use a layer 3 TOS enabled prioritization scheme.

Traffic Prioritization

The EDS classifies traffic based on layer 2 of the OSI 7 layer model, and the switch prioritizes received traffic according to the priority information defined in the received packet. Incoming

3-36

Page 50 Page 52
Image 51
Page 50 Page 52
Contents Fourth Edition, June Moxa EtherDevice Switch EDS-408A/405A Series User’s ManualCopyright Notice TrademarksDisclaimer Table of Contents Appendix a MIB Groups Appendix B Specifications Introduction Industrial vs. Commercial Moxa EtherDevice SwitchPackage Checklist Inside the Future of Industrial Ethernet TechnologyAdvanced Industrial Networking Capability Optional AccessoriesFeatures Useful Utility and Remote ConfigurationGetting Started Connection Caution RS-232 Console Configuration 115200, None, 8, 1, VT100EDS-408A/405A Series User’s Manual Getting Started Key Function Configuration Using a Telnet Console Configuration Using a Web Browser EDS-408A/405A Series User’s Manual Getting Started Configuration Disabling Telnet and Browser AccessFeatured Functions System Identification Configuring Basic SettingsPassword PasswordAccount Accessible IP Any host can access the EDS-408A/405AAllowable Hosts Input format Enable PortName Port Type NetworkPort Transmission Speed FDX Flow ControlDefault Gateway Auto IP ConfigurationSwitch IP Address Switch Subnet MaskCurrent Date TimeDaylight Saving Time Current TimeTurbo Ring DIP Switch How to Enable or Disable the Turbo Ring DIP Switches Disable the Turbo Ring DIP SwitchSet DIP switch as Turbo Ring / Set DIP switch as Turbo Ring How to Configure the Turbo Ring DIP Switches Redundancy Protocol drop-down box. See the ConfiguringTurbo Ring and Turbo Ring V2 section in this chapter for System File Update-By Remote Tftp System File Update-By Local Import/Export System File Update-By Backup Media Factory DefaultRestart Snmp Configuring SnmpV1, V2c Write/Read Community Snmp Read/Write SettingsSnmp Versions V1, V2c Read CommunityTrap Server IP/Name Setting Description Factory Default Setting Description Factory DefaultTurbo Ring Concept Using Communication RedundancyInitial setup of a Turbo Ring or Turbo Ring V2 ring Determining the Redundant Path of a Turbo Ring V2 Ring Ring Coupling ConfigurationRing Coupling for a Turbo Ring V2 Ring Dual-Homing Configuration applies only to Turbo Ring Dual-Ring Configuration applies only to Turbo RingMaster/Slave Configuring Turbo Ring and Turbo RingConfiguring Turbo Ring Now ActiveRedundant Ports Enable Ring CouplingRedundancy Protocol Set as MasterRing 1/2-2nd Ring Port Statu Ring 1/2-StatusRing 1/2-Master/Slave Ring 1/2-1st Ring Port StatusCoupling-Coupling Port status Enable RingCoupling-Mode Indicates either None, Dual Homing, or Ring CouplingCoupling Mode Primary/Backup PortSTP/RSTP Concept What is STP? STP Requirements How STP WorksPort Speed Path Cost 802.1D Edition STP ConfigurationSTP Reconfiguration Differences between Rstp and STPSTP Example Using STP on a Network with Multiple VLANsVLAN1 Configuring STP/RSTPBridge priority Forwarding DelayRoot/Not Root Protocol of RedundancyConfiguration Limits of RSTP/STP How Traffic Prioritization Works Using Traffic PrioritizationWhat is Traffic Prioritization? Traffic Prioritization ConceptDifferentiated Services DiffServ Traffic Marking Ieee 802.1p Priority Level Ieee 802.1D Traffic TypeTraffic Prioritization Traffic Queues Inspect TOS Configuring Traffic PrioritizationQoS Classification Queuing MechanismDefault Port Priority Inspect COSCoS Mapping TOS/DiffServ Mapping Using Virtual LANsWhat is a VLAN? Virtual LAN Vlan ConceptUsing Virtual LANs Port-based VLANs and the Moxa EtherDevice SwitchBenefits of VLANs Settings-Turbo Ring DIP Switch Using Rate Limiting Configuring Rate LimitingPolicy Configuring Email Warning Using Auto WarningEvent Types Email Warning Events SettingsConfiguring Email Settings Activate your settings and test email if necessaryEmail Settings MoxaEtherDeviceSwitch0001@SwitchLocationPort Event Configuring Relay Warning Activate your settings Relay Warning Events SettingsUsing Line-Swap-Fast-Recovery Override Relay Warning SettingsRelay Warning List Using Set Device IP Configuring Line-Swap Fast RecoveryEnable Line-Swap-Fast-Recovery Desired IP Address Using DiagnosisConfiguring Set Device IP Mirror PortBi-directional PingInput data stream Output data streamUsing the Monitor Monitor by SwitchMonitor by Port ALL Using the MAC Address TableUsing Syslog Using Event LogSyslog Server EDS Configurator GUI Broadcast Search Starting EDS ConfiguratorSearch by IP address Upgrade FirmwareModify IP Address Export Configuration Import Configuration Unlock Server EDS-408A/405A Series User’s Manual EDS Configurator GUI MIB Groups Optical Fiber PowerTechnology InterfaceMechanical EnvironmentRegulatory Approvals
Related manuals
Manual 86 pages 54.41 Kb

EDS-405A, EDS-408A specifications

Moxa Technologies has established itself as a leader in networking solutions, particularly for industrial applications. Among their cutting-edge products is the 405A Series, specifically the EDS-408A model, which exemplifies Moxa's commitment to performance, reliability, and versatility in industrial Ethernet switches.

The EDS-408A is an 8-port industrial Ethernet switch that offers an impressive array of features and capabilities designed to meet the demands of harsh environments. One of its main highlights is the ability to support both 10/100 Mbps Fast Ethernet and Gigabit Ethernet connections, providing users with the flexibility to integrate a range of devices within their network. Its robust design ensures that it operates seamlessly in extreme conditions, with a wide operating temperature range from -40 to 75 degrees Celsius.

The EDS-408A is built to support an array of networking topologies. It features advanced Ethernet switching technologies that enable fast and efficient data transfer while minimizing latency. The device is equipped with wire-speed forwarding capabilities, which is vital for maintaining high performance in heavy network traffic scenarios.

Another key feature of the EDS-408A is its redundancy support. The switch incorporates various redundancy protocols, including Rapid Spanning Tree Protocol (RSTP) and MRP (Media Redundancy Protocol), which enhance network reliability by allowing quick recovery in the event of a failure. This ensures continuous network uptime, which is critical for industrial applications.

Furthermore, Moxa Technologies has adopted an user-friendly web-based management interface in the EDS-408A, simplifying the configuration and monitoring process. This allows system administrators to easily manage settings, monitor traffic, and troubleshoot issues in real time. Additionally, the switch supports SNMP (Simple Network Management Protocol) for remote monitoring and management, enabling organizations to keep their networks optimized.

Security is another paramount feature of the EDS-408A. It includes built-in security mechanisms such as port security, VLAN, and access control lists (ACLs), which help safeguard sensitive network segments from unauthorized access.

In conclusion, Moxa Technologies' EDS-408A model from the 405A Series is a robust and feature-rich industrial Ethernet switch designed for demanding environments. With its support for various network protocols, redundancy features, user-friendly management, and enhanced security, the EDS-408A stands out as a reliable solution for organizations looking to enhance their industrial networking capabilities.
Top Page Image Contents