user’s guide version 2.2 Distributed Fabrics www.hp.
Notice © Hewlett-Packard Company, 2001. All rights reserved. Edition: E0801 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. 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.
CONTENTS Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 About This Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Getting Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Installing Extended Fabrics . . . . . . . . . . . . . . . . . . . . . . . 23 Installing Through Telnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Installing Through Web Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 6 Using Extended Fabrics . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Configuring Extended Fabrics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Accessing Through the Telnet Interface . . . . . . . . .
Revision History July 2001 First release.
HP Distributed Fabrics User’s Guide
PREFACE This document covers the installation, setup or configuration, and use of the Remote Switch and Extended Fabrics products. Remote Switch, in conjunction with a compatible fibre channel to an asynchronous transfer mode (ATM) gateway, enables two fabric switches to be connected over an ATM connection, with a distance of up to 10 km between each switch and the respective ATM gateway. Extended Fabrics allows you to use fibre channel technology to create a fabric interconnected at up to 100 km.
Chapter 4 Introducing Extended Fabrics Provides an overview of Extended Fabrics. Chapter 5 Installing Extended Fabrics Provides instructions for installing Extended Fabrics. Chapter 6 Using Extended Fabrics Provides information for using Extended Fabrics. Related Publications Related product information can be found in the following publications. Those publications with part numbers are provided as printed copies with your product.
Getting Help For support information, visit the HP web site located at: http://www.hp.com Getting Software Updates Firmware and software updates are found on the HP web site at: http://www.hp.
HP Distributed Fabrics User’s Guide
1 INTRODUCING REMOTE SWITCH The Remote Switch feature, in conjunction with a compatible fibre channel to asynchronous transfer mode (ATM) gateway, enables two fabric switches to be connected over an ATM connection, with a distance of up to 10 km between each switch and the respective ATM gateway. The two switches are cascaded together to form a fabric that, from the viewpoint of the connected hosts and storage devices, interact the same as locally connected switches.
• Distributed management - Access to the management facilities (Web Tools, Telnet, and SNMP) is available from either the local or remote switch. Interconnect for switch management is routed through the fibre channel connection; no additional network connection is required between sites. • Ability to support multiple interswitch links (ISLs) - Sites requiring redundant configurations can connect multiple E_Ports to remote sites by using multiple gateways.
2 INSTALLING REMOTE SWITCH A Remote Switch fabric requires two switches with Fabric OS version a2.4.1 or later installed; both the switches must have the same configuration and a separate license for each switch. The switch licenses are applied by your HP Account Support Engineer (ASE) or Customer Engineer (CE). You can also install a license through telnet or Web Tools.
Example: admin> licenseShow 1A1AaAaaaAAAA1a: Release v2.2 Web license Zoning license SES license QuickLoop license If the Remote Switch license is not included in the list or is incorrect, continue with Step 3. 3. Enter the following on the command line: licenseAdd “key” where “key” is the license key provided to you, surrounded by double quotes. The license key is case sensitive and must be entered exactly as given. 4.
3. Enter a logon name and password with administrative privileges and press Enter. The Administration View displays. 4. Select the License Admin tab, enter the license key in the License Key: field, and click Add License. The Remote Switch feature is available as soon as the license key is added.
HP Distributed Fabrics User’s Guide
3 USING REMOTE SWITCH You can configure switches for use with Remote Switch through Telnet or through Web Tools. For information about using Web Tools to configure a switch, see the Web Tools User’s Guide. The Remote Switch feature operates in conjunction with a fibre channel to ATM gateway. The gateway provides both a fibre channel physical interface functioning as an E_Port and an ATM physical interface.
the gateway E_Port moves to pass-through mode and passes fibre channel traffic from the switch E_Port to the ATM network. Setting Up A Remote Switch Fabric A Remote Switch fabric requires two switches, with identical configurations.
Accessing Through the Telnet Interface You can use the Telnet command configure to accomplish the following: • Set the R_A_TOV and E_D_TOV values. • Set the data field size. • Set the Class F frame suppression flag. You must disable the switch prior to entering the configure command. Example: switch:admin> configure Configure. . . Fabric parameters (yes, y, no, n): [no] yes Domain: (1. .239) [2] BB credit: (1. .16) [16] R_A_TOV: (4000. .120000) [10000] E_D_TOV: (1000. .
HP Distributed Fabrics User’s Guide
4 INTRODUCING EXTENDED FABRICS Extended Fabrics allows you to use fibre channel technology to create a fabric interconnected at a distance of up to 100 kilometers. You can use Extended Fabrics to increase the allowable distance between two switches, or between a switch and an ATM gateway in a Remote Switch configuration. Extended Fabrics optimizes the internal buffering algorithm for switches.
HP Distributed Fabrics User’s Guide
5 INSTALLING EXTENDED FABRICS Extended Fabrics requires a switch with Fabric OS version a2.4.1 installed and a license for each switch in the fabric. An Extended Fabrics license is installed on each switch by your HP Account Support Engineer (ASE) or Customer Engineer (CE). This license is installed through either Telnet or Web Tools as described in this chapter.
Example: admin> licenseShow 1A1AaAaaaAAAA1a: Web license Zoning license QuickLoop license Fabric license Fabric Watch license If the Extended Fabrics license is not included in the list, or is incorrect, continue with Step 3. If the licence is correctly listed, it is already installed. 3. Enter the following on the command line: licenseAdd “key” where “key” is the license key provided to you, surrounded by double quotes. The license key is case sensitive and must be entered exactly as given. 4.
3. Enter a logon name and password with administrative privileges and press Enter. The Administration View displays. 4. Select the License Admin tab, enter the license key in the License Key: field, and click Add License. The Extended Fabrics feature is available as soon as the license key is added.
HP Distributed Fabrics User’s Guide
6 USING EXTENDED FABRICS You can configure ports to support long-distance links through Telnet or through Web Tools. For information about using Web Tools to configure ports, see the Web Tools User’s Guide. Configuring Extended Fabrics To use Extended Fabrics, you must configure each switch in the fabric to support a long-distance extended fabric.
There are three possible levels for a port: • Level 0 Reconfigures the port as a regular switch port. The number of buffers reserved for the port supports up to 10 km links. • Level 1 Distances up to 50 km. A total of 27 full-size frame buffers are reserved for the port. • Level 2 Distances up to 100 km. A total of 60 full-size frame buffers are reserved for the port. Ports are grouped into quads, each of which consists of four adjacent ports that share a common pool of frame buffers.
When this command is invoked without the optional operand, you are prompted to enter the long-distance level number. The level value must be one of the following: Level Effect 0 Reconfigures the port as a regular switch port. The number of buffers reserved for the port supports links up to 10 km. 1 Level one long-distance, up to 50 km. A total of 27 full-size frame buffers are reserved for the port. 2 Level two long-distance, up to 100 km.
In order to have a long-distance port take effect, all switches in the fabric must be configured to run in long-distance fabric mode (the long-distance fabric mode bit must be “on,” or set to 1). Otherwise, the fabric will be segmented. In fact, a long-distance port cannot be configured in a switch unless the long-distance fabric mode is on for that switch. For the same reason, if all ports are reconfigured back to non long-distance ports, the long-distance fabric mode must be set to “off” for that switch.
GLOSSARY This glossary provides definitions for fibre channel and switch terminology. Alias Server A fabric software facility that supports multicast group management. AL_PA Arbitrated Loop Physical Address. An 8-bit value used to uniquely identify an individual port within a loop. A loop can have one or multiple AL_PAs. Arbitrated Loop Afibre channel transport structured as a loop. Allows communication between ports without using a switch.
Credit When applied to a switch, the maximum number of receive buffers provided by an F_Port or FL_Port to its attached N_Port or NL_Port, respectively, such that the N_Port or NL_Port can transmit frames without over-running the F_Port or FL_Port. Defined Configuration The complete set of all zone objects that are defined in the fabric. The defined configuration can include multiple zone configurations. Domain_ID Unique identifier for the switch in a fabric.
FSPF Fibre-Channel Shortest Path First. A routing protocol used by fibre channel switches. G_Port A generic port that can operate as either an E_Port or an 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. Gateway Hardware that connects incompatible networks by providing the necessary translation for both hardware and software. GBIC Gigabit Interface Converter.
POST Power on self-test. A series of self-tests that run each time the unit is booted or reset. R_A_TOV Resource Allocation Timeout Value. Used to time out operations that depend on the maximum possible time that a frame can be delayed in a fabric and still be delivered. This value is adjustable in 1-microsecond increments from 10 to 120 seconds. SNMP Simple Network Management Protocol.
Zone A set of hosts and devices attached to the same fabric and designated as belonging to the same zone. Any device connected to the fabric can be configured into one or more zones. Zone alias An alias for a set of port numbers or WWNs. Zone aliases can be used to simplify the entry of port numbers and WWNs. For example, “host” could be used as an alias for a WWN of 110:00:00:60:69:00:00:8a. Zone configuration A set of zones designated as belonging to the same zone configuration.
HP Distributed Fabrics User’s Guide
INDEX A ATM gateway 17 B BB credit 18 buffers, frame 28 L line speed performance 21 long-distance fabric mode bit, setting 27 P performance, Extended Fabrics 21 port levels 28 C Class F frames 18 configuring ports for long-distance 28 Q quads, definition of 28 D data field size 18 R R_A_TOV 18 E E_D_TOV 18 S segmentation of fabric 27 software, updates 9 support, technical 9 F Fibre Channel Association 8 frame buffers 28 frame transfer with Remote Switch 17 I installation of Extended Fabrics by Teln
U updates, software 9 W web installing Remote Switch by 14 38 HP Distributed Fabrics User’s Guide
