Emulex 355 manual Automatic Trunking example

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EMULEX MODEL 355 SAN STORAGE SWITCH

CHAPTER 3: SWITCH MANAGEMENT

USER’S GUIDE

Automatic Trunking

Multiple links between switches are called “trunks”. Trunks provide higher bandwidth across cascaded switches for systems incorporating multiple initiators. Each trunk can improve system throughput and provide “failover” capability. A maximum of 4 trunks between each switch is supported. Trunking is performed automatically when ports are configured properly. Figure 3-22is an example of Automatic Trunking.

Figure 3-22: Automatic Trunking example

Each trunk is part of a trunk group. A trunk group consists of two or more cascades between two switches, and these cascades must be the lowest numbered ports on both switches. There can only be one trunk group between two switches. Each trunk group contains a primary trunk. All traffic flows through the primary trunk on a switch unless specified otherwise using the Load Balancing feature. The primary trunk is always the lowest numbered port of any trunk group.

If the primary trunk fails, the secondary trunk automatically becomes the primary trunk unless otherwise configured. Multiple cascades also enable switch configuration for better performance through load balancing (see “Load Balancing” on page 43).

The Automatic Trunking page enables users to configure trunking by defining trunk groups and assigning ports to those groups. The Automatic Trunking feature is available when one or more ports are assigned a String or Tree Cascade Smart Setting.

Only one of the three following options may be selected for each port.

•Device or Initiator – Select this option to designate a specific port as an initiator or device. The specified port is not assigned to a trunk group. The Device or Initiator option is the default setting.

•Single Cascade – Select this option when connecting two switches with a single cascade. The selected port is not part of a trunk group.

•Trunk Group – Select this option when multiple cascades are connected between two switches. The selected port must be assigned to an available trunk group. Multiple trunk groups appear when two or more ports are assigned to the same string cascade Port Smart Setting (for example, String Cascade - Trunk 1).

Note: Before changing the Port Smart Setting for a particular port assigned to a trunk group, you must remove that port from the trunk group by selecting the Device or Initiator setting. Remember to click Submit to update the port’s setting.

EMULEX CORPORATION

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PART NUMBER 00041407-002 REV. B

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Contents Model ART N Umber 00041407-002 R EV. B Table of Contents Overview Chapter IntroductionInspeed Technology FeaturesTo unpack the switch Installation PreparationSwitch Installation Rack InstallationSwitch can be installed in a rack or placed on a desktop To install the switches in the trayDesktop Installation To place the switch on a desktopUL Guidelines for Mounting Equipment in a Rack Switch Leds Ethernet LEDsEthernet LEDs indicate the network connection status System LEDs SFP Status Port Bypassed Port LEDsAttaching a Device to the Switch Installing an SFPRemoving an SFP SFP CompatibilityTo boot the switch and SAN Booting the Switch and SANChapter Switch Management Configuring the Network Interface Getting StartedTo connect through a serial interface Command Button Description Submit Connecting to the Web ManagerCancel Web Manager OverviewLogin/Logout Command Button Description RebootDocumentation RefreshLog in to the Switch Initial Switch SetupChange the Password To log in to the switchTo view the current date and time Click Switch Date & Time Change the Switch NameTo set the date and time settings To change the switch name Click Switch ConfigurationFrequent Switch Configuration Tasks Managing the SwitchConfiguring the Switch Settings Logging in to the SwitchTo change a switch setting To reset the switchGeneral Switch Settings Switch IdentificationNetwork Location To change the switch speed Click Switch Configuration Switch SpeedVersion Information Blocking ARBTo configure an Snmp trap Setting Snmp TrapsConfiguring Date and Time Settings To change the time Click Switch Date & TimeTo synchronize time with the host system Click Host Time Changing the Password Switch Password page appearsOpening a Telnet Session Adjusting the Switch Thresholds Switch Thresholds page appearsTo change switch thresholds or time intervals Configuring the Port Smart Settings To view the Port Smart Settings Click Port Smart SettingsPort Smart Settings page appears Default Smart Settings To assign a Smart Setting to one or more ports Creating Custom Smart SettingsTo set all ports to the currently selected Smart Setting To create a custom Smart SettingTo modify a custom Smart Setting Smart Setting AssignmentsTo rename a custom Smart Setting To delete a custom Smart SettingPre-Insertion Testing Following settings are availablePort Information Change Notifications Setting Description Stealth Intelligent ChangeManager Change Notification onPort Recovery Diagnostics Managing Firmware and Configuration FilesSetting Description Port Control Bypass on Clock DeltaSwitch Configuration Files Switch Firmware FilesRestoring the Factory Default Settings To restore the factory default configurationOne-Step Zoning To activate zoning To add ports to a zoneTo remove a port from a zone To remove all ports from a zone13 Devices in a Single Zone Single-Switch ZoningTo add storage devices to multiple zones Adding Devices to Multiple Zones17 Devices in Multiple Zones Across Multiple Switches Multiple Switch Zoning Alpa Zoning Recovering a Bad Zone AutomaticallyTo set up Hard Zoning Connecting Ports Through Hard ZoningCascading Switches String CascadesTree Cascades 22 Automatic Trunking example Automatic Trunking23 Advanced Functions Automatic Trunking Load BalancingLoad Indicators To change the load balancing settingsFairness and Prioritization Monitoring the Switch Viewing Switch StatusSwitch Information Current status is provided for the following itemsPort Color Indication Green Port Utilization and HealthYellow RedViewing the Event Log To view the event log Click Switch Event LogEvent Log Messages page appears Last time the event log was polled appears at the topViewing Port Information To view port information Click Port InformationPort Information page appears Port Utilization page appears Viewing Port UtilizationValue Description High AveragePort Diagnostics page appears Viewing Port DiagnosticsTo reset a port Click Advanced Functions Diagnostics Port To save diagnostic informationManual Port Operation To clear the countersViewing Ordered Sets Detection Indication F7 Initialization CRC ErrorChange Notification UnknownTroubleshooting Device Connections Port Bypass Conditions and Recovery Troubleshooting Management ConnectionsDefault Smart Setting Attributes Fibre Channel References Appendixes Operating Conditions Switch SpecificationsLogging in and OUT Connecting to the CLITo connect through a network interface To log in to the CLIFrequent Switch Configuration Tasks Using the CLICLI Commands Event Event Message Severity Severity Description LevelPort Ptbi failed due to timeout Error during Port DiscInterswitch link added/removed LIP Cycle TimeoutHex Decimal Arbitrated Loop Physical AddressesPhysical Address Alpa or Arbitrated LoopArbitration Current Fill WordIndex SFP Part Number 00041407-002 REV. B
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