Moxa Technologies PT-7728 user manual Using Communication Redundancy, Private MIB information

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PT-7728 User’s Manual					Featured Functions
1st Trap Community
	Setting			Description	Factory Default
	Max. 30 characters			This specifies the community string to use	Public
				for authentication.
2nd Trap Server IP/Name

	Setting			Description	Factory Default
	IP or name			This specifies the IP address or name of	None
	IP or name			the secondary trap server used by your	None
				network.
2nd Trap Community
	Setting			Description	Factory Default
	Max. 30 characters			This specifies the community string to use	Public
				for authentication.
Private MIB information
Switch Object ID

	Setting			Description	Factory Default
	8691.7.13			This indicates the PT-7728’s enterprise	Fixed
	8691.7.13			value.	Fixed
				value.
NOTE: The Switch Object ID cannot be changed.

Using Communication Redundancy

Communication redundancy on your network helps protect critical links against failure, protects against network loops, and keeps network downtime at a minimum.

Communication redundancy functions allow the user to set up redundant loops in the network to provide a backup data transmission route in the event that a cable is inadvertently disconnected or damaged. This is a particularly important feature for industrial applications, since it could take several minutes to locate the disconnected or severed cable. For example, if the PT-7728 is used as a key communications component of a production line, several minutes of downtime can result in a big loss in production and revenue. The PT-7728 supports three different protocols for communication redundancy—Rapid Spanning Tree Protocol (IEEE-802.1w)and Turbo Ring, and Turbo Ring V2.

When configuring a redundant ring, all switches on the same ring must be configured using the same redundancy protocol. You cannot mix the Turbo Ring, Turbo Ring V2, and STP/RSTP protocols within a ring. The following table lists the key differences between each feature. Use this information to evaluate each the benefits of each, and then determine which features are most suitable for your network.

	Turbo Ring V2	Turbo Ring	STP	RSTP
Topology	Ring	Ring	Ring, Mesh	Ring, Mesh
Recovery Time	< 20 ms	< 300 ms	Up to 30 sec.	Up to 5 sec

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Contents First Edition, February Moxa Inc Moxa PowerTrans Switch PT-7728 User’s ManualTrademarks Copyright NoticeDisclaimer Table of Contents Appendix a MIB Groups Appendix B Specifications Introduction ‰ Overview ‰ Package Checklist ‰ Software FeaturesSoftware Features Package ChecklistOverview Getting Started Serial Console Configuration 115200, None, 8, 1, VT100 PT-7728 User’s Manual Getting Started Key Function Configuration by Telnet ConsolePT-7728 User’s Manual Getting Started PT-7728 User’s Manual Getting Started Configuration by Web Browser Disabling Telnet and Browser Access Featured Functions System Identification Configuring Basic SettingsPassword PasswordAccount Hosts That Need Access Input Format Accessible IPGrant access to one host with a specific IP address Grant access to any host on a specific subnetworkName EnablePort DescriptionSpeed NetworkFDX Flow Ctrl Default Gateway Auto IP ConfigurationSwitch IP Address Switch Subnet MaskCurrent Date TimeDaylight Saving Time Current TimeSystem File Update-By Remote Tftp Log Files Path and Name Configuration Files Path and NameTftp Server IP/Name Firmware Files Path and NameFactory Default System File Update-By Local Import/ExportPort Trunking Concept Using Port TrunkingAvailable Ports/Member Ports Configuring Port TrunkingTrunk Group Maximum of 4 trunk groups Trunk Type Setting Description Configuring Snmp Trunk Table V1, V2c Write/Read Community Snmp Read/Write SettingsSnmp Versions V1, V2c Read Community1st Trap Server IP/Name Setting Description Factory Default Setting Description Factory DefaultPrivate MIB information Using Communication RedundancyTurbo Ring Concept Initial setup for Turbo Ring or Turbo RingTurbo Ring with odd number switches Determining the Redundant Path for Turbo Ring Ring Coupling ConfigurationSwitch B Dual-Homing Configuration for Turbo Ring Configuring Turbo Ring and Turbo RingConfiguring Turbo Ring Set as Master Now ActiveMaster/Slave Redundancy ProtocolCoupling Port Enable Ring CouplingCoupling Control Port Coupling-Mode Enable RingRing 1/2-Status Ring 1/2-1st Ring Port Status Ring 1/2-2nd Ring Port StatusPrimary/Backup Port Coupling ModeSTP/RSTP Concept What is STP?PT-7728 User’s Manual Featured Functions Port Speed Path Cost 802.1D Edition 802.1w-2001 STP ConfigurationHow STP Works STP RequirementsDifferences between Rstp and STP STP ReconfigurationSTP Example Using STP on a Network with Multiple VLANs Bridge Priority Configuring STP/RSTPRoot/Not Root Protocol of RedundancyMax. Age sec Forwarding DelayEnable STP per Port Hello Time secTraffic Prioritization Concept Using Traffic PrioritizationConfiguration Limits of RSTP/STP What is Traffic Prioritization?Ieee 802.1p Priority Level Ieee 802.1D Traffic Type How Traffic Prioritization WorksTraffic Prioritization Differentiated Services DiffServ Traffic MarkingTraffic Queues Inspect TOS Configuring Traffic PrioritizationQoS Classification Queuing MechanismInspect COS Setting Description FactoryCoS Mapping TOS/DiffServ MappingWhat is a VLAN? Using Virtual LANVirtual LAN Vlan Concept Communication Between VLANs VLANs and the PowerTransBenefits of VLANs Managing a VlanVLANs Tagged and Untagged Membership Sample Applications of VLANs using PT-7728PT-7728 User’s Manual Featured Functions Port Type Configuring Virtual LANVlan Settings Management Vlan IDVlan Table Using Multicast FilteringWhat is an IP Multicast? Concept of Multicast FilteringMulticast Filtering Benefits of MulticastNetwork without multicast filtering Network with multicast filtering Multicast Filtering and Moxa PowerTrans SwitchIgmp Internet Group Management Protocol Snooping Mode Query ModeStatic Multicast MAC Configuring Igmp SnoopingIgmp Multicast Filtering Gmrp Garp Multicast Registration ProtocolIgmp Snooping Settings Add Static Multicast MAC Gmrp Table Using Bandwidth ManagementConfiguring Gmrp Gmrp enableTraffic Rate Limiting Settings Configuring Bandwidth Management Broadcast Storm ProtectionIngress Ieee Using Port Access ControlConfiguring Static Port Lock Static Port LockServer Port Configuring IeeeDatabase Option Radius ServerLocal User Database Setup 802.1X Re-AuthenticationPort Access Control Table Using Auto WarningLocal User Database Setup Event Type Configuring Email WarningMail Server IP/Name Email SetupMoxaPowerTransSwitch0001@SwitchLocation Port EventsEmail Address Configuring Relay WarningPassword Setting Account NameEvent Setup Override relay alarm settings Using Line-Swap-Fast-RecoveryUsing Set Device IP Configuring Line-Swap Fast RecoverySet up the connected devices Configuring Set Device IPMirror Port Using DiagnosisMonitor by Switch Using MonitorPing Monitor by Port Using the MAC Address TableMAC Using Event LogSyslog Server Using SyslogPT-7728 User’s Manual Featured Functions MIB II.5 Icmp Group MIB II.1 System GroupMIB II.2 Interfaces Group MIB II.4 IP GroupMIB II.11 Snmp Group MIB II.10 Transmission GroupMIB II.17 dot1dBridge Group Private Traps Public TrapsTechnology Switch PropertiesInterface Optical Fiber 100BaseFX PowerMechanical WarrantyEnvironmental