Moxa Technologies EDS-726 user manual Configuring STP/RSTP

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EDS-726 Series User’s Manual

Featured Functions

The following figure shows an example of a network that contains VLANs 1 and 2. The VLANs are connected using the 802.1Q-tagged link between Switch B and Switch C. By default, this link has a port cost of 100 and is automatically blocked because the other Switch-to-Switch connections have a port cost of 36 (18+18). This means that both VLANs are now subdivided—VLAN 1 on Switch units A and B cannot communicate with VLAN 1 on Switch C, and VLAN 2 on Switch units A and C cannot communicate with VLAN 2 on Switch B.

	Switch A
100BaseTX	100BaseTX
full-duplex Link;	full-duplex Link;
only carries VLAN1	only carries VLAN2
(path cost = 18)	(path cost = 18)

Switch B	Switch C
	Block

802.1Q tagged, 10BaseTx half-duplex Link carries VLAN1, 2 (path cost = 100)

To avoid subdividing VLANs, all inter-switch connections should be made members of all available 802.1Q VLANs. This will ensure connectivity at all times. For example, the connections between Switches A and B, and between Switches A and C should be 802.1Q tagged and carrying VLANs 1 and 2 to ensure connectivity.

See the “Configuring Virtual LANs” section for more information about VLAN Tagging.

Configuring STP/RSTP

The following figures indicate which Spanning Tree Protocol parameters can be configured. A more detailed explanation of each parameter is given below the figure.

At the top of this page, the user can check the “Current Status” of this function. For RSTP, you will see:

3-29

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Contents Moxa EtherDevice Switch EDS-726 Series User’s Manual First Edition, JulyDisclaimer Copyright NoticeTrademarks Table of Contents Chapter EDS Configurator GUI Introduction Package Checklist FeaturesOverview Industrial Networking CapabilityUseful Utility and Remote Configuration Recommended Software and AccessoriesGetting Started RS-232 Console Configuration 115200, None, 8, 1, VT100 Connection CautionEDS-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 Configuring Basic Settings System IdentificationPassword Switch NameSwitch Location Switch DescriptionPassword AccountAccessible IP Any host on a specific subnetwork can access the EDS-726Any host can access the EDS-726 Allowable Hosts Input formatEnable PortDescription NameNetwork Port Transmission SpeedFDX Flow Control Port TypeAuto IP Configuration Switch IP AddressSwitch Subnet Mask Default GatewayTime Current TimeCurrent Date System Up TimeSystem File Update-By Remote Tftp System File Update-By Local Import/Export Factory Default Using Port TrunkingSystem File Update-By CF Card Port Trunking Concept Configuring Port Trunking Setting Description Trunk Group Maximum of 4 trunk groupsTrunk Type Member Ports/Available PortsConfiguring Snmp SnmpSnmp Read/Write Settings Snmp VersionsV1, V2c Read Community V1, V2c Write/Read CommunityTrap Settings Trap Server IP/NameUsing Communication Redundancy Switch Object IDPrivate MIB information Gigabit Ethernet Redundant Ring Capability 300 msInitial Setup Turbo Ring ConceptWhen the number of EDS-726 units in the Turbo Ring is even Ring Coupling Configuring Turbo Ring STP/RSTP Concept What is STP? Port Speed Path Cost 802.1D Edition 802.1w-2001 How STP WorksSTP Requirements STP Configuration STP ReconfigurationDifferences between Rstp and STP STP CalculationUsing STP on a Network with Multiple VLANs STP ExampleConfiguring STP/RSTP Forwarding Delay Root/Not RootProtocol of Redundancy Bridge priorityConfiguration Limits of RSTP/STP Enable STP per PortPort Priority Port CostUsing 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 PrioritizationQoS Classification Default Port Priority Queuing MechanismInspect TOS Inspect COSTOS/DiffServ Mapping Setting Description FactoryCoS Mapping Virtual LAN Vlan Concept Using Virtual LANWhat is a VLAN? VLANs and Moxa EtherDevice Switch Benefits of VLANsManaging a Vlan Communication Between VLANsSample Applications of VLANs using Moxa EDS-726 HUBConfiguring 802.1Q Vlan Vlan Port SettingsManagement Vlan ID Port PvidPort Fixed Vlan List Tagged Port Forbidden Vlan ListUsing Multicast Filtering What is an IP Multicast?Concept of Multicast Filtering Benefits of MulticastMulticast Filtering Network without multicast filteringMulticast Filtering and Moxa EtherDevice Switch Igmp Internet Group Management Protocol Snooping ModeQuery Mode Igmp Multicast FilteringConfiguring Igmp Snooping Igmp Snooping SettingsStatic Multicast MAC Enabling Multicast FilteringIgmp Snooping Static Multicast Router PortQuerier Igmp TableAdd Static Multicast MAC Add New Static Multicast Address to the ListNone Join PortConfiguring Gmrp Port Setting Description Factory DefaultGmrp enable Setting Description Factory Default Port Mode Setting Description Factory DefaultUsing Bandwidth Management Configuring Bandwidth ManagementGmrp Table Broadcast Storm ProtectionUsing Port Access Control Traffic Rate Limiting SettingsIeee Static Port LockMessage Exchange Configuring Ieee 802.1XDatabase Option Radius ServerServer Port Shared Key802.1X Re-Authentication 802.1X Re-AuthenticationLocal User Database Setup 802.1X Table Local User Database SetupStatic Port Lock Email Alarm Events Settings Using Auto WarningConfiguring Email Warning MoxaEtherDeviceSwitch0001@SwitchLocation Event TypesSystem Event Port EventEmail Settings Configuring Relay Warning Relay Alarm Events SettingsConfiguring Relay Event Types Activate your settingsRelay Alarm List Override relay alarm settingsUsing Line-Swap-Fast-Recovery Using Set Device IPConfiguring Line-Swap Fast Recovery Enable Line-Swap-Fast-RecoveryConfiguring Set Device IP Set up the connected devicesUsing Diagnosis Mirror PortOutput data stream Bi-directionalPing Using MonitorMonitor by Switch Using the MAC Address Table Monitor by PortUsing Event Log ALLEDS Configurator GUI Starting EDS Configurator Broadcast SearchUpgrade Firmware Search by IP addressModify IP Address Export Configuration Import Configuration Unlock Server EDS-726 Series User’s Manual MIB II.1 System Group MIB II.2 Interfaces GroupMIB II.4 IP Group MIB II.5 Icmp GroupMIB II.17 dot1dBridge Group MIB II.10 Transmission GroupMIB II.11 Snmp Group Public Traps Private TrapsModular Managed Switch System, EDS-72610G InterfaceMechanical PowerGigabit Ethernet Interface Module, IM series Fast Ethernet Interface Module, IM series Optical FiberInterface Environmental Regulatory ApprovalsService Information Moxa Internet Services Following services are providedProblem Report Form Serial NumberProduct Return Procedure