Moxa Technologies EDS-408A, 405A SERIES user manual How STP Works, STP Requirements

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EDS-408A/405A Series User’s Manual

Featured Functions

Bridge A

LAN 1

Bridge B

LAN 2

Bridge C

LAN 3

What happens if a link failure is detected? As shown in next figure, the STP process reconfigures the network so that traffic from LAN segment 2 flows through Bridge B.

Bridge A

LAN 1

Bridge B

LAN 2

Bridge C

LAN 3

STP determines which path between each bridged segment is most efficient, and then assigns a specific reference point on the network. When the most efficient path has been identified, the other paths are blocked. In the previous 3 figures, STP first determined that the path through Bridge C was the most efficient, and as a result, blocked the path through Bridge B. After the failure of Bridge C, STP re-evaluated the situation and opened the path through Bridge B.

How STP Works

When enabled, STP determines the most appropriate path for traffic through a network. The way it does this is outlined in the following sections.

STP Requirements

Before STP can configure the network, the system must satisfy the following requirements:

yCommunication between all the bridges. This communication is carried out using Bridge Protocol Data Units (BPDUs), which are transmitted in packets with a known multicast address.

yEach bridge must have a Bridge Identifier that specifies which bridge acts as the central reference point, or Root Bridge, for the STP system—bridges with a lower Bridge Identifier are more likely to be designated as the Root Bridge. The Bridge Identifier is calculated using the MAC address of the bridge and a priority defined for the bridge. The default priority of EDS is 32768.

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Contents Moxa EtherDevice Switch EDS-408A/405A Series User’s Manual Second Edition, JulyDisclaimer Copyright NoticeTrademarks Table of Contents Chapter EDS Configurator GUI 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 Key Function Configuration Using a Telnet Console Configuration Using a Web Browser EDS-408A/405A Series User’s Manual Disabling Telnet and Browser Access ConfigurationFeatured Functions Configuring Basic Settings System IdentificationAccount PasswordPassword Allowable Hosts Input format Accessible IPAny host can access the EDS-408A/405A Name EnablePort 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 Set DIP switch as Turbo Ring / Set DIP switch as Turbo Ring How to Enable or Disable the Turbo Ring DIP SwitchesDisable the Turbo Ring DIP Switch Turbo Ring and Turbo Ring V2 section in this chapter for How to Configure the Turbo Ring DIP SwitchesRedundancy Protocol drop-down box. See the Configuring System File Update-By Remote Tftp System File Update-By Local Import/Export Restart System File Update-By Backup MediaFactory Default 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 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 statusSTP/RSTP Concept Coupling ModePrimary/Backup Port What is STP? How STP Works STP RequirementsSTP Configuration STP ReconfigurationDifferences between Rstp and STP Port Speed Path Cost 802.1D Edition 802.1w-2001Using STP on a Network with Multiple VLANs STP ExampleConfiguring STP/RSTP Forwarding 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 WorksTraffic Prioritization Differentiated Services DiffServ Traffic MarkingIeee 802.1p Priority Level Ieee 802.1D Traffic Type Traffic Queues Configuring Traffic Prioritization QoS ClassificationQueuing Mechanism Inspect TOSCoS Mapping Default Port PriorityInspect COS Using Virtual LANs What is a VLAN?Virtual LAN Vlan Concept TOS/DiffServ MappingBenefits of VLANs Using Virtual LANsPort-based VLANs and the Moxa EtherDevice Switch Settings-Turbo Ring DIP Switch Policy Using Rate LimitingConfiguring Rate Limiting Using Auto Warning Configuring Email WarningEmail Warning Events Settings Configuring Email SettingsActivate your settings and test email if necessary Event TypesPort Event Email SettingsMoxaEtherDeviceSwitch0001@SwitchLocation Configuring Relay Warning Relay Warning Events Settings Activate your settingsRelay Warning List Using Line-Swap-Fast-RecoveryOverride Relay Warning Settings Enable Line-Swap-Fast-Recovery Using Set Device IPConfiguring Line-Swap Fast Recovery Using Diagnosis Configuring Set Device IPMirror Port Desired IP AddressPing Input data streamOutput data stream Bi-directionalMonitor by Port Using the MonitorMonitor by Switch 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 MIB Groups MIB II.16 RmonSpecifications PowerTechnology InterfaceRegulatory Approvals MechanicalEnvironment Service Information Moxa Internet Services Following services are providedSerial Number Problem Report FormMoxa Products Product Return Procedure
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405A SERIES, 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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