user's guide version 3.0 isl trunking www.hp.
Notice Safety notices © Hewlett-Packard Company, 2001. All rights reserved. Any servicing, adjustment, maintenance, or repair must be performed only by authorized service-trained personnel. Edition: E1201 Hewlett-Packard Company makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose.
Contents Preface Chapter 1 Chapter 2 Chapter 3 About This Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v Getting Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii Getting Software Updates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii Introducing ISL Trunking Overview . . .
iv ISL Trunking User’s Guide
Preface ISL Trunking is a licensed option that requires a valid license key to function. It is included and enabled in switches with the performance upgrade option. It is supported for the HP Surestore FC 1Gb/2Gb Entry Switch 8B, FC 1Gb/2Gb Switch 8B, and FC 1Gb/2Gb Switch 16B products using Fabric OS version 3.0.1b or later. About This Guide This guide provides the following information about ISL Trunking: Chapter 1 Introducing ISL Trunking Overview of the ISL Trunking feature.
Provided on the FC Entry Switch 8B and FC Switch 8B Documentation CD, and at the HP Web site at 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 Fabric OS Reference Manual, version 3.0 Fabric OS Procedures Guide, version 3.0 Fabric OS Version 3.0.
Getting Help For information for the FC Entry Switch 8B and FC Switch 8B, visit the HP Web site at http://www.hp.com/support/fc8B. For the most current technical support information for the FC 16B, visit the HP Web site at http://www.hp.com/support/fc16B. This includes hardware and software support, all repairs, and spare components.
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Chapter Introducing ISL Trunking 1 This chapter provides the following information: • • • Overview on page 1-1 Advantages of ISL Trunking on page 1-1 Trunking Groups, Ports and Masters on page 1-3 Overview Interswitch Link (ISL) Trunking is an optionally licensed product available on the FC Entry Switch 8B, FC Switch 8B, and FC 16B switches with Fabric OS version 3.0.1b or later. ISL Trunking is managed using telnet commands or the Web Tools interface.
1 Introducing ISL Trunking Routing without the ISL Trunking Feature Prior to the implementation of the ISL Trunking feature, device-level load sharing was done through Fibre Channel networks that created ISLs and operated with the Fibre Channel Shortest Path First (FSPF) routing protocol. The protocol established and communicated the shortest paths for data to be carried from source to destination.
Introducing ISL Trunking 1 In Figure 1-2, four ISLs provide 8Gb/Sec of total throughput. With the implementation of ISL Trunking, bandwidth is shared across the trunked ISLs, permitting a total throughput of 2Gb/Sec. + 1.5Gb/Sec + 0.5Gb/Sec + 1 Gb/Sec + 2Gb/Sec, or 7Gb/Sec. Because the trunk aggregates the four individual paths into one and preserves in-order deliver of frames, the total throughput is increased compared to a non-trunked group of ISLs.
1 Introducing ISL Trunking Trunking Masters The trunking master implicitly defines the trunking group. All ports with the same master are considered to be part of the same group. Each trunking group includes a single trunking master and from 1 to 3 trunking slave links. The first ISL found in any trunking group is assigned to be the trunking master, also known as the principal ISL.
Chapter Installing ISL Trunking 2 Overview Installing the ISL Trunking feature involves activating a license for each switch you want to enable for trunking. After the license is activated, ISL Trunking is automatically invoked as ISLs are added between two 2Gbit/Sec switches. A license may have been installed in the switch at the factory. If not, contact your switch supplier to obtain a license key. The ISL Trunking feature requires an HP Surestore FC Switch with Fabric OS version 3.0.1b or later.
2 Installing ISL Trunking switchdisable 6. Enable the switch by entering the following command: switchenable Installing ISL Trunking through Web Tools To enter the ISL Trunking license key using the Web Tool user interface, do the following 1. Launch the Web browser, enter the switch name or IP address in the Location/Address field, and press Enter. Web Tools launches, displaying the Fabric View. 2. Click the Admin View button on the relevant switch panel. The logon window displays. 3.
Chapter Using ISL Trunking 3 This chapter provides the following information: • • • Overview on page 3-1 Administering ISL Trunking on page 3-1 Frequently Asked Questions about ISL Trunking on page 3-4 Overview The ISL Trunking feature is managed by performing some administration tasks. These tasks include: enabling or disabling the trunking, enabling and disabling ports of a switch, setting the speed of a port, and debugging a trunking link failure.
3 Using ISL Trunking ISL Trunking Telnet Commands The following table shows the telnet commands used to manage the ISL Trunking feature. Table 3-1 ISL Trunking Telnet Commands Telnet Command Description Example portCfgTrunkport Use this command to configure a port to be enabled or disabled for ISL Trunking.
Using ISL Trunking 3 Using Web Tools for ISL Trunking Use Web Tools to view and modify ISL Trunking options through the Trunk Information Tab and the Port Settings Tab on the Switch Administration interface. For information on how to install and use Web Tools for the ISL Trunking feature, refer to the Web Tools User’s Guide. Use the Web Tools Trunk Information tab to view a summary of trunk groups and associated master and member ports.
3 Using ISL Trunking Frequently Asked Questions about ISL Trunking The following table lists Frequently Asked Questions about the ISL Trunking feature: Table 3-4 3-4 Frequently Asked Questions about ISL Trunking Frequently Asked Questions Answers Does ISL Trunking replace Dense Wavelength Digital Multiplexing (DWDM)? No. DWDM is a ring, and if a failure occurs it reroutes the allocated wavelength over alternate routes, and therefore changes the effective cable lengths.
Glossary 8b/10b Encoding An encoding scheme that converts each 8-bit byte into 10 bits. Used to balance ones and zeros in high-speed transports. Address Identifier A 24-bit or 8-bit value used to identify the source or destination of a frame. Advanced Performance Monitoring A software product that provides error and performance information to the administrator and end user for use in storage management.
BER 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. Broadcast The transmission of data from a single source to all devices in the fabric, regardless of zoning. See also Multicast, Unicast.
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 Fabrics The combined user’s guides for the software products Extended Fabrics and Remote Switch. “Distributed Fabrics” is not a software product. See also Extended Fabrics, Remote Switch. DLS Dynamic Load Sharing; dynamic distribution of traffic over available paths.
Fabric Manager A software product that works in conjunction with Web Tools to provide a 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. Fabric Name The unique identifier assigned to a fabric and communicated during login and port discovery. Fabric OS Operating system on HP Brocade switches.
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. G_Port Generic Port; a port that can operate as either an E_Port or F_Port. A port is defined as a G_Port when it is not yet connected or has not yet assumed a specific function in the fabric.
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. See also Comma. L_Port Loop Port; a node port (NL_Port) or fabric port (FL_Port) that has arbitrated loop capabilities.
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. See also SNS. NL_Port Node Loop Port; a node port that has arbitrated loop capabilities. Used to connect an equipment port to the fabric in a loop configuration through an FL_Port.
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 NL_Port An NL_Port that logs into the fabric, can function within either a public or a private loop, and can communicate with either private or public NL_Ports.
SI 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. Can be made available over other protocols, such as UDP/IP, because it does not rely on the underlying communication protocols. See also Community (SNMP).
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. UDP User Datagram Protocol; a protocol that runs on top of IP and provides port multiplexing for upper-level protocols. ULP Upper-level Protocol; the protocol that runs on top of Fibre Channel. Typical upper-level protocols are SCSI, IP, HIPPI, and IPI.
Index A L administering trunking switch administration advantages of trunking 1-1 load balancing 1-2 3-1 M B manage trunking 3-3 master Brocade Web Tools tabs 3-3 1-4 members, group 1-3 O F Fibre Channel Association vi Fibre Channel Shortest Path First (FSPF) 1-2 overview trunking 1-1 four-port groups 1-3 P G port speed 1-3 trunking 1-3 group members 1-3 trunking 1-3 R I installation license key 2-1 telnet 2-1 Web Tools 2-2 Interswitch Link (ISL) routing with trunking 1-2 without tru
T technical support vii telnet commands administering 3-2 installation 2-1 portCfgTrunkport 3-2 supportShow command trunkDebug 3-2 trunkshow 3-2 trunking administration 3-3 advantages 1-1 groups 1-3 management 3-3 masters 1-4 overview 1-1 port 1-3 vii W Web Tools installation license key 2-2 Index-2 ISL Trunking User’s Guide
