Emulex 375 manual Automatic Trunking example

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EMULEX MODEL 375 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 47).

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.

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PART NUMBER 00041392-002 REV. B

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Contents Emulex Model ART N Umber 00041392-002 R EV. B Table of Contents Overview Chapter IntroductionInspeed Technology FeaturesStorage Consolidation and Shared Storage Pooling Switch ApplicationsTape Library Consolidation 3depicts a sample tape library consolidation configurationServer Clustering Rich MediaTo unpack the switch Installation PreparationDesktop Installation Rack InstallationSwitch Installation To place the switch on a desktopTo install the retention clip Installing the Retention Clips optionalTo insert the power cord with the retention clip in place To remove the power cord with the retention clip in placeEthernet LEDs Switch LedsEthernet LEDs indicate the network connection status Port LEDs System LEDsPower Supply/Fan Module LED Attaching a Device to the Switch Installing an SFPRemoving an SFP SFP CompatibilityTo boot the switch and SAN Booting the Switch and SANTo remove an old power supply/fan module Power SUPPLY/FAN Module ReplacementTo insert a new power supply/fan module Chapter Switch Management Getting Started Configuring the Network InterfaceTo connect through a serial interface Command Button Description Submit Connecting to the Web ManagerWeb Manager Overview To connect to the Web ManagerReboot Command Button Description CancelLogin/Logout DocumentationLog 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 switchSwitch Identification General Switch SettingsNetwork Location To change the switch speed Click Switch Configuration Switch SpeedVersion Information Blocking ARBTo configure an Snmp trap Setting Snmp TrapsTo change the time Click Switch Date & Time Configuring Date and Time SettingsTo synchronize time with the host system Click Host Time Switch Password page appears Changing the PasswordOpening a Telnet Session Switch Thresholds page appears Adjusting the Switch ThresholdsTo change switch thresholds or time intervals To view the Port Smart Settings Click Port Smart Settings Configuring the 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 SettingFollowing settings are available Pre-Insertion TestingPort Information Change Notifications Setting Description Stealth Intelligent ChangeManager Change Notification onPort Recovery Setting Description Port Control DiagnosticsBypass on Clock Delta Switch Firmware Files Managing Firmware and Configuration FilesTo load new firmware on the switch To check for new firmwareRestoring the Factory Default Settings Switch Configuration FilesColor Description Down red One-Step ZoningUp green Not Active yellowSingle-Switch Zoning To add storage devices to multiple zones Adding Devices to Multiple Zones16 Ports in Multiple Zones on the One-Step Zoning Multiple Switch ZoningAlpa Zoning Recovering a Bad Zone AutomaticallyTo set up Hard Zoning Connecting Ports Through Hard ZoningString Cascades Cascading SwitchesTree Cascades 22 Automatic Trunking example Automatic Trunking23 Advanced Functions Automatic Trunking Load BalancingTo change the load balancing settings Load IndicatorsMonitoring the Switch Viewing Switch StatusFairness and Prioritization Current status is provided for the following items Switch InformationPort 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 topTo view port information Click Port Information Viewing 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 DiscLIP Cycle Timeout System config reset to factory defaultHex Decimal Arbitrated Loop Physical AddressesLoop Physical Address Alpa or ArbitratedArbitration Current Fill WordIndex SFP Part Number 00041392-002 REV. B
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