Moxa Technologies EDS-726 Using Multicast Filtering, Concept of Multicast Filtering, Vlan Table

Page 57

EDS-726 Series User’s Manual

Featured Functions

VLAN Table

In this table, you can review the VLAN groups that were created, Joined Access Ports, and Trunk Ports.

NOTE	The physical network can have a maximum of 64 VLAN settings.

Using Multicast Filtering

Multicast filtering improves the performance of networks that carry multicast traffic. This section explains multicasts, multicast filtering, and how multicast filtering can be implemented on your EDS-726.

The Concept of Multicast Filtering

What is an IP Multicast?

A multicast is a packet sent by one host to multiple hosts. Only those hosts that belong to a specific multicast group will receive the multicast. If the network is set up correctly, a multicast can only be sent to an end-station or a subset of end-stations on a LAN or VLAN that belong to the multicast group. Multicast group members can be distributed across multiple subnetworks, so that multicast transmissions can occur within a campus LAN or over a WAN. In addition, networks that support IP multicast send only one copy of the desired information across the network until the delivery path that reaches group members diverges. To make more efficient use of network bandwidth, it is only at these points that multicast packets are duplicated and forwarded. A multicast packet has a multicast group address in the destination address field of the packet’s IP header.

Benefits of Multicast

The benefits of using IP multicast are that it:

yUses the most efficient, sensible method to deliver the same information to many receivers with only one transmission.

yReduces the load on the source (for example, a server) since it will not need to produce several copies of the same data.

yMakes efficient use of network bandwidth and scales well as the number of multicast group members increases.

yWorks with other IP protocols and services, such as Quality of Service (QoS).

Multicast transmission makes more sense and is more efficient than unicast transmission for some applications. For example, multicasts are often used for video-conferencing, since high volumes of traffic must be sent to several end-stations at the same time, but where broadcasting the traffic to all end-stations would cause a substantial reduction in network performance. Furthermore, several

3-42

Image 57

Contents First Edition, July Moxa EtherDevice Switch EDS-726 Series User’s ManualCopyright Notice TrademarksDisclaimer Table of Contents Chapter EDS Configurator GUI Introduction Features Package ChecklistOverview Industrial Networking CapabilityRecommended 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 Name PasswordSwitch Location Switch DescriptionAccount PasswordAny host on a specific subnetwork can access the EDS-726 Accessible IPAny host can access the EDS-726 Allowable Hosts Input formatPort EnableDescription NamePort Transmission Speed NetworkFDX Flow Control Port TypeSwitch IP Address Auto IP ConfigurationSwitch Subnet Mask Default GatewayCurrent Time TimeCurrent Date System Up TimeSystem 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 Trunk Group Maximum of 4 trunk groups Setting DescriptionTrunk Type Member Ports/Available PortsSnmp Configuring SnmpSnmp Versions Snmp Read/Write SettingsV1, V2c Read Community V1, V2c Write/Read CommunityTrap Server IP/Name Trap SettingsSwitch Object ID Using Communication RedundancyPrivate MIB information Gigabit Ethernet Redundant Ring Capability 300 msTurbo 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 Reconfiguration STP ConfigurationDifferences between Rstp and STP STP CalculationSTP Example Using STP on a Network with Multiple VLANsConfiguring STP/RSTP Root/Not Root Forwarding DelayProtocol of Redundancy Bridge priorityEnable STP per Port Configuration Limits of RSTP/STPPort Priority Port CostWhat is Traffic Prioritization? Using Traffic PrioritizationTraffic Prioritization Concept How Traffic Prioritization WorksDifferentiated Services DiffServ Traffic Marking Ieee 802.1p Priority Level Ieee 802.1D Traffic TypeTraffic Prioritization Configuring Traffic Prioritization QoS ClassificationTraffic Queues Queuing Mechanism Default Port PriorityInspect TOS Inspect COSSetting Description Factory CoS MappingTOS/DiffServ Mapping Using Virtual LAN What is a VLAN?Virtual LAN Vlan Concept Benefits of VLANs VLANs and Moxa EtherDevice SwitchManaging a Vlan Communication Between VLANsHUB Sample Applications of VLANs using Moxa EDS-726Vlan Port Settings Configuring 802.1Q VlanPort Pvid Management Vlan IDPort Fixed Vlan List Tagged Port Forbidden Vlan ListWhat is an IP Multicast? Using Multicast FilteringConcept of Multicast Filtering Benefits of MulticastNetwork without multicast filtering Multicast FilteringIgmp Internet Group Management Protocol Snooping Mode Multicast Filtering and Moxa EtherDevice SwitchQuery Mode Igmp Multicast FilteringIgmp Snooping Settings Configuring Igmp SnoopingStatic Multicast MAC Enabling Multicast FilteringStatic Multicast Router Port Igmp SnoopingQuerier Igmp TableAdd New Static Multicast Address to the List Add Static Multicast MACNone Join PortPort Setting Description Factory Default Configuring GmrpGmrp enable Setting Description Factory Default Port Mode Setting Description Factory DefaultConfiguring Bandwidth Management Using Bandwidth ManagementGmrp Table Broadcast Storm ProtectionTraffic Rate Limiting Settings Using Port Access ControlIeee Static Port LockMessage Exchange 802.1X Configuring IeeeRadius Server Database OptionServer Port Shared Key802.1X 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 Event Types MoxaEtherDeviceSwitch0001@SwitchLocationSystem Event Port EventEmail Settings Relay Alarm Events Settings Configuring Relay WarningConfiguring Relay Event Types Activate your settingsOverride relay alarm settings Relay Alarm ListUsing Set Device IP Using Line-Swap-Fast-RecoveryConfiguring Line-Swap Fast Recovery Enable Line-Swap-Fast-RecoverySet up the connected devices Configuring Set Device IPMirror Port Using DiagnosisOutput data stream Bi-directionalUsing 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.2 Interfaces Group MIB II.1 System GroupMIB II.4 IP Group MIB II.5 Icmp 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