Moxa Technologies EDS-726 user manual STP/RSTP Concept

Page 39

EDS-726 Series User’s Manual

Featured Functions

Redundancy Protocol

 

 

 

 

 

 

 

 

 

Setting

Description

Factory Default

 

 

Turbo Ring

Select this item to change to the

None

 

 

Turbo Ring configuration page.

 

 

 

 

 

 

RSTP (IEEE

Select this item to change to the

None

 

 

802.1W/1D)

RSTP configuration page.

 

 

 

 

Set as Master

 

 

 

 

 

 

 

 

Setting

Description

Factory Default

 

 

Enable/Disable

Select this EDS-726 as Master

None

 

Redundant Ports

 

 

 

 

 

 

 

 

Setting

Description

Factory Default

 

 

1st Port

Select any port of EDS-726 to be

Port 7 if enabled for

 

 

one of the redundant ports.

Turbo Ring

 

 

 

 

 

2nd Port

Select any port of EDS-726 to be

Port 8 if enabled for

 

 

one of the redundant ports.

Turbo Ring

 

 

 

 

Enable Ring Coupling

 

 

 

 

 

 

 

 

Setting

Description

Factory Default

 

 

Enable/Disable

Select this EDS-726 as Coupler

None

 

Coupling Ports

 

 

 

 

Setting

Description

Factory Default

 

 

Coupling Port

Select any port of EDS-726 to be

Port 5 if enabled for

 

 

the coupling port

Ring Coupling

 

 

 

 

 

Coupling Control Port

Select any port of EDS-726 to be

Port 6 if enabled for

 

 

 

the coupling control port

Ring Coupling

 

The STP/RSTP Concept

Spanning Tree Protocol (STP) was designed to help reduce link failures in a network, and provide protection from loops. Networks that have a complicated architecture are prone to broadcast storms caused by unintended loops in the network. MOXA EDS-726’s STP feature is disabled by default. To be completely effective, you must enable RSTP/STP on every EDS-726 connected to your network.

Rapid Spanning Tree Protocol (RSTP) implements the Spanning Tree Algorithm and Protocol defined by IEEE Std 802.1w-2001. RSTP provides the following benefits:

yThe topology of a bridged network will be determined much more quickly compared to STP.

yRSTP is backward compatible with STP, making it relatively easy to deploy. For example:

¾Defaults to sending 802.1D style BPDUs if packets with this format are received.

¾STP (802.1D) and RSTP (802.1w) can operate on different ports of the same EDS-726. This feature is particularly helpful when EDS-726 ports connect to older equipment, such as legacy switches.

You get essentially the same functionality with RSTP and STP. To see how the two systems differ, see the Differences between RSTP and STP section in this chapter.

NOTE

The STP protocol is part of the IEEE Std 802.1D, 1998 Edition bridge specification. The

 

explanation given below uses bridge instead of switch.

 

 

3-24

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Contents First Edition, July Moxa EtherDevice Switch EDS-726 Series User’s ManualCopyright Notice TrademarksDisclaimer Table of Contents Chapter EDS Configurator GUI Introduction Industrial Networking Capability Package ChecklistFeatures OverviewRecommended Software and Accessories Useful Utility and Remote ConfigurationGetting Started Connection Caution RS-232 Console Configuration 115200, None, 8, 1, VT100EDS-726 Series User’s Manual Key Function Configuration by Telnet Console Configuration by Web Browser EDS-726 Series User’s Manual Disabling Telnet and Browser Access Featured Functions System Identification Configuring Basic SettingsSwitch Description PasswordSwitch Name Switch LocationAccount PasswordAllowable Hosts Input format Accessible IPAny host on a specific subnetwork can access the EDS-726 Any host can access the EDS-726Name EnablePort DescriptionPort Type NetworkPort Transmission Speed FDX Flow ControlDefault Gateway Auto IP ConfigurationSwitch IP Address Switch Subnet MaskSystem Up Time TimeCurrent Time Current DateSystem File Update-By Remote Tftp System File Update-By Local Import/Export Using Port Trunking System File Update-By CF CardFactory Default Port Trunking Concept Configuring Port Trunking Member Ports/Available Ports Setting DescriptionTrunk Group Maximum of 4 trunk groups Trunk TypeSnmp Configuring SnmpV1, V2c Write/Read Community Snmp Read/Write SettingsSnmp Versions V1, V2c Read CommunityTrap Server IP/Name Trap SettingsGigabit Ethernet Redundant Ring Capability 300 ms Using Communication RedundancySwitch Object ID Private MIB informationTurbo Ring Concept Initial SetupWhen the number of EDS-726 units in the Turbo Ring is even Ring Coupling Configuring Turbo Ring STP/RSTP Concept What is STP? How STP Works STP RequirementsPort Speed Path Cost 802.1D Edition 802.1w-2001 STP Calculation STP ConfigurationSTP Reconfiguration Differences between Rstp and STPSTP Example Using STP on a Network with Multiple VLANsConfiguring STP/RSTP Bridge priority Forwarding DelayRoot/Not Root Protocol of RedundancyPort Cost Configuration Limits of RSTP/STPEnable STP per Port Port PriorityHow 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 Configuring Traffic Prioritization QoS ClassificationTraffic Queues Inspect COS Default Port PriorityQueuing Mechanism Inspect TOSSetting Description Factory CoS MappingTOS/DiffServ Mapping Using Virtual LAN What is a VLAN?Virtual LAN Vlan Concept Communication Between VLANs VLANs and Moxa EtherDevice SwitchBenefits of VLANs Managing a VlanHUB Sample Applications of VLANs using Moxa EDS-726Vlan Port Settings Configuring 802.1Q VlanPort Forbidden Vlan List Management Vlan IDPort Pvid Port Fixed Vlan List TaggedBenefits of Multicast Using Multicast FilteringWhat is an IP Multicast? Concept of Multicast FilteringNetwork without multicast filtering Multicast FilteringIgmp Multicast Filtering Multicast Filtering and Moxa EtherDevice SwitchIgmp Internet Group Management Protocol Snooping Mode Query ModeEnabling Multicast Filtering Configuring Igmp SnoopingIgmp Snooping Settings Static Multicast MACIgmp Table Igmp SnoopingStatic Multicast Router Port QuerierJoin Port Add Static Multicast MACAdd New Static Multicast Address to the List NonePort Mode Setting Description Factory Default Configuring GmrpPort Setting Description Factory Default Gmrp enable Setting Description Factory DefaultBroadcast Storm Protection Using Bandwidth ManagementConfiguring Bandwidth Management Gmrp TableStatic Port Lock Using Port Access ControlTraffic Rate Limiting Settings IeeeMessage Exchange 802.1X Configuring IeeeShared Key Database OptionRadius Server Server Port802.1X Re-Authentication Local User Database Setup802.1X Re-Authentication Local User Database Setup Static Port Lock802.1X Table Using Auto Warning Configuring Email WarningEmail Alarm Events Settings Port Event MoxaEtherDeviceSwitch0001@SwitchLocationEvent Types System EventEmail Settings Activate your settings Configuring Relay WarningRelay Alarm Events Settings Configuring Relay Event TypesOverride relay alarm settings Relay Alarm ListEnable Line-Swap-Fast-Recovery Using Line-Swap-Fast-RecoveryUsing Set Device IP Configuring Line-Swap Fast RecoverySet up the connected devices Configuring Set Device IPBi-directional Using DiagnosisMirror Port Output data streamUsing Monitor Monitor by SwitchPing Monitor by Port Using the MAC Address TableALL Using Event LogEDS Configurator GUI Broadcast Search Starting EDS ConfiguratorSearch by IP address Upgrade FirmwareModify IP Address Export Configuration Import Configuration Unlock Server EDS-726 Series User’s Manual MIB II.5 Icmp Group MIB II.1 System GroupMIB II.2 Interfaces Group MIB II.4 IP GroupMIB II.10 Transmission Group MIB II.11 Snmp GroupMIB II.17 dot1dBridge Group Private Traps Public TrapsInterface Modular Managed Switch System, EDS-72610GPower Gigabit Ethernet Interface Module, IM seriesMechanical Optical Fiber Fast Ethernet Interface Module, IM seriesInterface Regulatory Approvals EnvironmentalService Information Following services are provided Moxa Internet ServicesSerial Number Problem Report FormProduct Return Procedure
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