Moxa Technologies EDS-408A, EDS-405A user manual Traffic Queues

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EDS-408A/405A Series User’s Manual

Featured Functions

traffic is classified based upon the IEEE 802.1D frame and is assigned to the appropriate priority queue based on the IEEE 802.1p service level value defined in that packet. Service level markings (values) are defined in the IEEE 802.1Q 4-byte tag, and consequently traffic will only contain 802.1p priority markings if the network is configured with VLANs and VLAN tagging. The traffic flow through the switch is as follows:

1.A packet received by the EDS may or may not have an 802.1p tag associated with it. If it does not, then it is given a default 802.1p tag (which is usually 0). Alternatively, the packet may be marked with a new 802.1p value, which will result in all knowledge of the old 802.1p tag being lost.

2.Because the 802.1p priority levels are fixed to the traffic queues, the packet will be placed in the appropriate priority queue, ready for transmission through the appropriate egress port. When the packet reaches the head of its queue and is about to be transmitted, the device determines whether or not the egress port is tagged for that VLAN. If it is, then the new 802.1p tag is used in the extended 802.1D header.

The EDS will check a packet received at the ingress port for IEEE 802.1D traffic classification, and then prioritize it based upon the IEEE 802.1p value (service levels) in that tag. It is this 802.1p value that determines which traffic queue the packet is mapped to.

Traffic Queues

The EDS hardware has multiple traffic queues that allow packet prioritization to occur. Higher priority traffic can pass through the EDS without being delayed by lower priority traffic. As each packet arrives in the EDS, it passes through any ingress processing (which includes classification, marking/re-marking), and is then sorted into the appropriate queue. The switch then forwards packets from each queue.

The EDS supports two different queuing mechanisms:

yWeight Fair: This method services all the traffic queues, giving priority to the higher priority queues. Under most circumstances, this method gives high priority precedence over low-priority, but in the event that high-priority traffic exceeds the link capacity, lower priority traffic is not blocked.

yStrict: This method services high traffic queues first; low priority queues are delayed until no more high priority data needs to be sent. This method always gives precedence to high priority over low-priority.

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Contents Moxa EtherDevice Switch EDS-408A/405A Series User’s Manual Fourth Edition, JuneTrademarks Copyright NoticeDisclaimer Table of Contents Appendix a MIB Groups Appendix B Specifications Introduction Moxa EtherDevice Switch Package ChecklistInside the Future of Industrial Ethernet Technology Industrial vs. CommercialOptional Accessories FeaturesUseful Utility and Remote Configuration Advanced Industrial Networking CapabilityGetting Started RS-232 Console Configuration 115200, None, 8, 1, VT100 Connection CautionEDS-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 Disabling Telnet and Browser Access ConfigurationFeatured Functions Configuring Basic Settings System IdentificationPassword PasswordAccount Any host can access the EDS-408A/405A Accessible IPAllowable Hosts Input format Port EnableName Network Port Transmission SpeedFDX Flow Control Port TypeAuto IP Configuration Switch IP AddressSwitch Subnet Mask Default GatewayTime Daylight Saving TimeCurrent Time Current DateTurbo Ring DIP Switch Disable the Turbo Ring DIP Switch How to Enable or Disable the Turbo Ring DIP SwitchesSet DIP switch as Turbo Ring / Set DIP switch as Turbo Ring Redundancy Protocol drop-down box. See the Configuring How to Configure the Turbo Ring DIP SwitchesTurbo Ring and Turbo Ring V2 section in this chapter for System File Update-By Remote Tftp System File Update-By Local Import/Export Factory Default System File Update-By Backup MediaRestart Configuring Snmp SnmpSnmp Read/Write Settings Snmp VersionsV1, V2c Read Community V1, V2c Write/Read CommunitySetting Description Factory Default Trap Server IP/Name Setting Description Factory DefaultUsing Communication Redundancy Turbo Ring ConceptInitial setup of a Turbo Ring or Turbo Ring V2 ring Ring Coupling Configuration Determining the Redundant Path of a Turbo Ring V2 RingRing Coupling for a Turbo Ring V2 Ring Dual-Ring Configuration applies only to Turbo Ring Dual-Homing Configuration applies only to Turbo RingConfiguring Turbo Ring and Turbo Ring Configuring Turbo RingNow Active Master/SlaveEnable Ring Coupling Redundancy ProtocolSet as Master Redundant PortsRing 1/2-Status Ring 1/2-Master/SlaveRing 1/2-1st Ring Port Status Ring 1/2-2nd Ring Port StatuEnable Ring Coupling-ModeIndicates either None, Dual Homing, or Ring Coupling Coupling-Coupling Port statusPrimary/Backup Port Coupling ModeSTP/RSTP Concept What is STP? How STP Works STP RequirementsSTP Configuration STP ReconfigurationDifferences between Rstp and STP Port Speed Path Cost 802.1D EditionUsing STP on a Network with Multiple VLANs STP ExampleConfiguring STP/RSTP VLAN1Forwarding Delay Root/Not RootProtocol of Redundancy Bridge priorityConfiguration Limits of RSTP/STP Using Traffic Prioritization What is Traffic Prioritization?Traffic Prioritization Concept How Traffic Prioritization WorksIeee 802.1p Priority Level Ieee 802.1D Traffic Type Differentiated Services DiffServ Traffic MarkingTraffic Prioritization Traffic Queues Configuring Traffic Prioritization QoS ClassificationQueuing Mechanism Inspect TOSInspect COS Default Port PriorityCoS Mapping Using Virtual LANs What is a VLAN?Virtual LAN Vlan Concept TOS/DiffServ MappingPort-based VLANs and the Moxa EtherDevice Switch Using Virtual LANsBenefits of VLANs Settings-Turbo Ring DIP Switch Configuring Rate Limiting Using Rate LimitingPolicy Using Auto Warning Configuring Email WarningEmail Warning Events Settings Configuring Email SettingsActivate your settings and test email if necessary Event TypesMoxaEtherDeviceSwitch0001@SwitchLocation Email SettingsPort Event Configuring Relay Warning Relay Warning Events Settings Activate your settingsOverride Relay Warning Settings Using Line-Swap-Fast-RecoveryRelay Warning List Configuring Line-Swap Fast Recovery Using Set Device IPEnable Line-Swap-Fast-Recovery Using Diagnosis Configuring Set Device IPMirror Port Desired IP AddressPing Input data streamOutput data stream Bi-directionalMonitor by Switch Using the MonitorMonitor by Port Using the MAC Address Table ALLUsing Event Log Using SyslogSyslog Server EDS Configurator GUI Starting EDS Configurator Broadcast SearchUpgrade Firmware Search by IP addressModify IP Address Export Configuration Import Configuration Unlock Server EDS-408A/405A Series User’s Manual EDS Configurator GUI MIB Groups Power TechnologyInterface Optical FiberEnvironment MechanicalRegulatory Approvals
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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.
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