Moxa Technologies EDS-726 user manual Port Trunking Concept

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EDS-726 Series User’s Manual

Featured Functions

The Port Trunking Concept

EDS-726 allows a maximum of 4 trunk groups, with a maximum of 8 trunk ports for each trunk group. You can configure the trunk group to be “Static” or “LACP.” Once the trunk group is set to “LACP,” all of the ports making up that group will be set to LACP enabled. The ports in the “Static” trunk groups, and all the non-trunk ports that do not belong to any trunk group, will be set to LACP disabled. When the port is set to LACP enabled, it will exchange LACPDU with its link partner, and will result in “Forwarding.” If all of the ports in the same group are “Blocked” or “Disabled” or “Down” (link-down), the trunk group will not work, and the user will see “LACP Failed” for that trunk group in the user interface.

EDS-726 allows you to set more than 8 ports in one trunk group. Those ports that exceed the port limit (i.e., 8) will be set as “Standby” ports, as defined by the IEEE 802.3ad protocol. A “Standby” port is an LACP enabled port that is attached to a trunk group, but is not functioning yet. The port state of such ports will be listed as “Blocking.” A trunk group on “Standby” cannot be used by another trunk group, or be activated as an individual link. The standby port will start working as a normal trunk port whenever any other trunk port in the same group stops functioning, such as when a port fails to transmit or receive packets due to a physical fault. EDS-726 allows a maximum of 4 “Standby” ports for each LACP trunk group, so that a maximum of 12 ports can be assigned to each LACP trunk group. A Static trunk group cannot have “Standby” ports. This means that a Static trunk group can only have a maximum of 8 ports in the group.

Port Trunking applies to connections between backbone devices as well as to connections in other network areas where traffic bottlenecks exist. Port Trunking provides the following benefits:

yGives you more flexibility in setting up your network connections, since the bandwidth of a link can be expanded to 8 times the original bandwidth.

yProvides redundancyif one link is broken, the remaining trunked ports share the traffic within this link. EDS-726 allows a maximum of 4 “Standby” ports for each LACP trunk group. In another words, a maximum of 12 ports can belong to each LACP trunk group. These four standby ports provide redundancy to a normal 8-port trunk whenever any other trunk port in the same group does not function properly, such as when the port fails to transmit or receive packets due to a physical fault

yLoad sharingMAC Client traffic may be distributed across multiple links.

Keep the following points in mind when configuring port trunking:

yTo avoid broadcast storms or loops in your network while configuring a trunk, first disable or disconnect all ports that you want to add to the trunk or remove from the trunk. After you finish configuring the trunk, enable or re-connect the ports.

yUp to 4 port trunking groups (designated Trk1, Trk2, Trk3, Trk4) can be used for each EDS-726.

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Contents Moxa EtherDevice Switch EDS-726 Series User’s Manual First Edition, JulyTrademarks Copyright NoticeDisclaimer 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 System File Update-By CF Card Using Port TrunkingFactory Default 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? STP Requirements How STP WorksPort Speed Path Cost 802.1D Edition 802.1w-2001 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 WorksIeee 802.1p Priority Level Ieee 802.1D Traffic Type Differentiated Services DiffServ Traffic MarkingTraffic Prioritization QoS Classification Configuring Traffic PrioritizationTraffic Queues Default Port Priority Queuing MechanismInspect TOS Inspect COSCoS Mapping Setting Description FactoryTOS/DiffServ Mapping What is a VLAN? Using Virtual LANVirtual LAN Vlan Concept 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 KeyLocal User Database Setup 802.1X Re-Authentication802.1X Re-Authentication Static Port Lock Local User Database Setup802.1X Table Configuring Email Warning Using Auto WarningEmail Alarm Events Settings 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-directionalMonitor by Switch Using MonitorPing 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.11 Snmp Group MIB II.10 Transmission GroupMIB II.17 dot1dBridge Group Public Traps Private TrapsModular Managed Switch System, EDS-72610G InterfaceGigabit Ethernet Interface Module, IM series PowerMechanical 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