HP StorageWorks 8B - FC Entry Switch User Manual
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HP StorageWorks 8B - FC Entry Switch User Manual

HP StorageWorks 8B - FC Entry Switch User Manual

Quickloop user's guide (version 3.0)
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Summary of Contents for HP StorageWorks 8B - FC Entry Switch

  • Page 1 user's guide version 3.0 quickloop www.hp.com...
  • Page 2 Hewlett-Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.

  • Page 3: Table Of Contents

    Contents Preface About This Guide ......... . Related Publications .
  • Page 4 Sample Configurations ........Configuration 1: Emulating a Hub .

  • Page 5: Preface

    Preface Zoning is a standard feature on the HP Surestore FC 1Gb/2Gb Switch 8B and FC 1Gb/2Gb Switch 16B products. It is also available on the HP Surestore FC 1Gb/2Gb Entry Switch 8B if the Zoning license is installed. QuickLoop is a standard feature on the HP Surestore FC 1Gb/2Gb Entry Switch 8B, FC 1Gb/2Gb Switch 8B, and FC 1Gb/2Gb Switch 16B products.
  • Page 6 Provided on the FC Entry Switch 8B and FC Switch 8B Documentation CD, and at the HP Web site http://www.hp.com/support/fc8B • HP Surestore FC 1Gb/2Gb Entry Switch 8B and FC 1Gb/2Gb Switch 8B Getting Started Guide (A7346-90902) • HP Surestore FC 1Gb/2Gb Entry Switch 8B and FC 1Gb/2Gb Switch 8B Installation and Reference Guide •...

  • Page 7: System Requirements And Compatibility

    System Requirements and Compatibility Compatibility with other Products Fabric OS version 3.0.1b or later can be installed and run on the FC Entry Switch 8B, FC Switch 8B, and FC 16B products. The FC Entry Switch 8B, FC Switch 8B, and the FC 16B switch running Fabric OS version 3.0.1b or later can operate in the same fabric with the HP Brocade 2400/2800 and FC 6164 switches running the a2.4.1 or later versions of Fabric OS.
  • Page 8 viii QuickLoop User’s Guide...

  • Page 9: Introducing Quickloop

    Chapter Introducing QuickLoop This chapter provides the following information: • Overview page 1-1 • QuickLoop Basics page 1-1 • Address Translation page 1-2 • Combining QuickLoop and Zoning page 1-2 Overview QuickLoop allows arbitrated loops to be attached to a fabric. Without modifying their drivers, private target on the arbitrated loops can be accessed by public or private hosts elsewhere on the fabric.

  • Page 10: Address Translation

    Introducing QuickLoop QuickLoop provides a possible migration path starting with deploying a single private loop and later deploying a fabric-based SAN. In this scenario, QuickLoop-enabled switches can be used to replace hubs when the SAN is first deployed and has only private devices attached. Then, as the SAN grows, fabric switches can be added without any detrimental effect to the QuickLoop-enabled switches.
  • Page 11 Introducing QuickLoop • Zones can be created within QuickLoops. Zoning can be used to partition QuickLoops. This creates QuickLoop zones (as opposed to fabric zones), whose members are identified by either physical port number or AL_PA. For more information about using Zoning and QuickLoop in conjunction, see the Zoning User’s Guide.
  • Page 12 Introducing QuickLoop QuickLoop User’s Guide...

  • Page 13: Using Quickloop

    Chapter Using QuickLoop This chapter provides the following information: • Overview page 2-1 • Administering QuickLoop page 2-2 • QuickLoop Topology page 2-2 • QuickLoop Implementation page 2-3 • Sample Configurations page 2-5 • Error Handling page 2-11 Note: For information about creating zones within a QuickLoop, see the Zoning User’s Guide. Overview You can enable or disable QuickLoop for either the entire switch or for particular ports.

  • Page 14: Administering Quickloop

    Using QuickLoop A switch has a default mode, which depends on the switch model. When powered up, all the ports of the switch will be set to the default mode. Administering QuickLoop You can manage QuickLoops through telnet commands or through Web Tools. Web Tools You can view and modify the QuickLoop settings through the QuickLoop Admin tab on the Switch Admin interface view available through Web Tools.

  • Page 15: Quickloop Implementation

    Using QuickLoop • Each looplet in a QuickLoop has its own unshared bandwidth and can support transfer rates up to 200 MB/sec. • Multiple devices communicate simultaneously between at least 4 separate switch ports, at full bandwidth within multiple looplets located in the same QuickLoop. These simultaneous conversations cannot involve overlapping looplets.

  • Page 16: Dual-Switch Quickloop

    Using QuickLoop E_port Expansion port. A port is designated an E_Port when it is used as an interswitch expansion port to connect to the E_Port of another switch, to build a larger switch fabric, or to build a two-switch QuickLoop configuration. Sometimes, a single fabric loop device is attached to a port.

  • Page 17: Sample Configurations

    Using QuickLoop Pass 1: Sequential Looplet Initialization This pass allows each device in the QuickLoop to obtain a unique AL_PA in a single AL_PA bit-map. Only those looplets from which LIPs were received are initialized, using the loop initialization procedure described in the FC-AL standard. The AL_PAs of devices in looplets from which no LIPs are received are preserved during initialization.
  • Page 18 Using QuickLoop The QuickLoop configuration examples are: Configuration 1 A simple configuration in which a QuickLoop-enabled switch is used as a hub emulator or concentrator. Configuration 2 A dual-switch configuration in which two switches are cascaded by a local fiber connection to make up a QuickLoop.

  • Page 19: Configuration 1: Emulating A Hub

    Using QuickLoop Configuration 1: Emulating a Hub Figure 2-1 on page 2-7 shows multiple hosts and devices connected to a QuickLoop-enabled switch. The switch serves as a concentrator, similar to a hub except the switch offers throughput performance on each looplet of 200MB/sec. Figure 2-1 QuickLoop-enabled Switch Used as Concentrator QuickLoop User’s Guide...

  • Page 20: Configuration 2: Dual-Switch Quickloop

    Using QuickLoop Configuration 2: Dual-switch QuickLoop Figure 2-2 on page 2-8 shows two switches cascaded by a local fiber connection between E_ports into a single logical PLDA. The ports configured on both switches in QuickLoop share a single AL_PA bit-map. Neither switch can participate in a different QuickLoop. The QuickLoop can be further subdivided into one or more QuickLoop zones.

  • Page 21: Configuration 3: Long Wave Laser Connection

    Using QuickLoop Configuration 3: Long Wave Laser Connection Figure 2-3 on page 2-9 shows two switches cascaded by a long wave laser into a single logical PLDA. Both switches operate in QuickLoop mode and connect devices at distances of up to 10 kilometers.

  • Page 22: Configuration 4: Mixed Quickloop Mode And Fabric Mode

    Using QuickLoop Configuration 4: Mixed QuickLoop Mode and Fabric Mode Figure 2-4 on page 2-10shows a sample configuration of a mixed mode environment, with ports set on an individual basis to either QuickLoop mode or Fabric mode. In this example, a fabric is formed from two cascaded switches, HP Surestore 1 and HP Surestore 2.

  • Page 23: Error Handling

    Using QuickLoop Error Handling QuickLoop isolates faulty switches or ports by excluding them from the initialization process. This allows minimization of the impact of a faulty looplet or switch on normal QuickLoop operations, and is particularly important for QuickLoops that contain multiple looplets distributed across two switches.
  • Page 24 Using QuickLoop 2-12 QuickLoop User’s Guide...
  • Page 25 Glossary 8b/10b An encoding scheme that converts each 8-bit byte into 10 bits. Used to balance Encoding ones and zeros in high-speed transports. Address A 24-bit or 8-bit value used to identify the source or destination of a frame. Identifier Advanced A software product that provides error and performance information to the Performance...
  • Page 26 Bit Error Rate; the rate at which bits are expected to be received in error. Expressed as the ratio of error bits to total bits transmitted. See also Error. Block As applies to Fibre Channel, upper-level application data that is transferred in a single sequence.
  • Page 27 Disparity The relationship of ones and zeros in an encoded character. “Neutral disparity” means an equal number of each, “positive disparity” means a majority of ones, and “negative disparity” means a majority of zeros. Distributed The combined user’s guides for the software products Extended Fabrics and Fabrics Remote Switch.
  • Page 28 Fabric A software product that works in conjunction with Web Tools to provide a Manager graphical user interface for managing switch groups as a single unit, instead of as separate switches. Fabric Manager is installed on and run from a computer workstation.
  • Page 29 FSPF Fabric Shortest Path First. Routing protocol for Fibre Channel switches. Full-duplex A mode of communication that allows the same port to simultaneously transmit and receive frames. See also Half-duplex. Fx_Port A fabric port that can operate as either an F_Port or FL_Port. See also F_Port, FL_Port.
  • Page 30 JBOD Just a Bunch Of Disks; indicates a number of disks connected in a single chassis to one or more controllers. See also RAID. K28.5 A special 10-bit character used to indicate the beginning of a transmission word that performs Fibre Channel control and signaling functions. The first seven bits of the character are the comma pattern.
  • Page 31 Multimode A fiber optic cabling specification that allows up to 500 meters between devices. N_Port Node Port; a port on a node that can connect to a Fibre Channel port or to another N_Port in a point-to-point connection. See also NL_Port, Nx_Port. Name Server Frequently used to indicate Simple Name Server.
  • Page 32 Private Device A device that supports arbitrated loop protocol and can interpret 8-bit addresses, but cannot log into the fabric. Private Loop An arbitrated loop that does not include a participating FL_Port. Protocol A defined method and a set of standards for communication. Public An NL_Port that logs into the fabric, can function within either a public or a NL_Port...
  • Page 33 Sequence Initiative. Single Mode The fiber optic cabling standard that corresponds to distances of up to 10 km between devices. SNMP Simple Network Management Protocol. An internet management protocol that uses either IP for network-level functions and UDP for transport-level functions, or TCP/IP for both.
  • Page 34 U_Port Universal Port; a switch port that can operate as a G_Port, E_Port, F_Port, or FL_Port. A port is defined as a U_Port when it is not connected or has not yet assumed a specific function in the fabric. User Datagram Protocol; a protocol that runs on top of IP and provides port multiplexing for upper-level protocols.
  • Page 35 Index 2-1, 2-2, 2-10 address translation Fabric mode 1-1, 2-8 switch level AL_PA zones arbitrated loop FC_AL FC-FLA Fibre Channel Arbitrated Loop Fibre Channel Association bandwidth full initialization (pass 2) QuickLoop looplets hardware translative mode configurations hub emulation dual-switch cascaded dual-switch long-distance loop 2-10...
  • Page 36 loop 2-11 initialization master 2-11 initialization sequences recovery 2-11 looplet 2-11 port level 2-11 bandwidth switch level 2-3, 2-11 error sample configurations master, QuickLoop sequential looplet initialization (pass 1) modes SNMP about standard translative mode Fabric Assist support, technical Fabric mode (switch-level) supportShow telnet command hardware translative 1-2, 2-1...
  • Page 37 Zoning features license using with QuickLoop zoning 1-2, 2-1, 2-6 QuickLoops QuickLoop User’s Guide Index-3...

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