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HP 2920 Installation And Getting Started Manual

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HP 2920 Switches
Installation and Getting Started Guide
Power over Ethernet

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   Summary of Contents for HP 2920

  • Page 1

    HP 2920 Switches Installation and Getting Started Guide Power over Ethernet...

  • Page 3

    HP 2920 Switches Installation and Getting Started Guide...

  • Page 4

    The information contained herein is subject to change without performance, or use of this material. notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying This document contains proprietary information, which is such products and services.

  • Page 5: Table Of Contents

    HP 2920 Stacking Module ........

  • Page 6: Table Of Contents

    Rack or Cabinet Mounting ....... 2-12 Rack Mounting the HP 2920 switch in a 2-post rack ..2-12 Rack Mounting the HP 2920 switch in a 4-post rack .

  • Page 7: Table Of Contents

    Downloading New Switch Software ......5-15 HP Customer Support Services ....... . 5-15...

  • Page 8: Table Of Contents

    A Specifications Switch Specifications ......... A-1 Physical .

  • Page 9

    Introducing the HP 2920 Switches The HP 2920 switches are multi-port switches that can be used to build high- performance switched networks. These switches are store-and-forward devices offering low latency for high-speed networking. The HP 2920 switches also support a field-replaceable power supply, Power over Ethernet (PoE/ PoE+) technologies, and full network management capabilities.

  • Page 10: Fronts Of The Switches

    Introducing the HP 2920 Switches Fronts of the Switches Fronts of the Switches PoE/PoE+ Switches Figure 1-1. Front of the HP 2920-24G-PoE+ Switch ➎ ➊ ➏ ➋ ➌ ➍ ➓ ➏ ➐ ➑ ➒ Figure 1-2. Front of the HP 2920-48G-PoE+ Switch ➎...

  • Page 11: Non-poe Switches

    Introducing the HP 2920 Switches Fronts of the Switches Non-PoE Switches Figure 1-3. Front of the HP 2920-24G Switch ➎ ➊ ➏ ➋ ➌ ➍ ➓ ➒ ➏ ➐ ➑ Figure 1-4. Front of the HP 2920-48G Switch ➎ ➏...

  • Page 12: Network Ports

    SFP ports are included in the dual-personality ports. The SFP ports support 1G SFP transceivers. J9584A SFP ports also support 100 Mb (100-FX and 100-BX) transceivers. SFP+ ports are provides on the HP 2920 2-Port 10-GbE SFP+ Module. They support 1G SFP and 10G SFP+ transceivers.

  • Page 13

    Introducing the HP 2920 Switches Fronts of the Switches Table 1-2. Optional Network Connectivity, Speeds and Technologies Transceiver Form-Factor and Connector Speed Technology Cabling SFP+ Connector Connector 100-FX Fiber (multimode) 100 Mbps 100-BX Fiber (single mode) 1000-T Copper (twisted-pair) RJ-45...

  • Page 14: Management Ports

    Introducing the HP 2920 Switches Fronts of the Switches Management Ports Console Port This port is used to connect a console to the switch by using the RJ-45 to DB9 cable supplied with the switch. This connection is described under “10.

  • Page 15

    Introducing the HP 2920 Switches Fronts of the Switches Table 1-3. Standalone Switch and Port LED Behavior Switch LEDs State Meaning Power The switch is receiving power. (green) The switch is NOT receiving power. Fault The normal state; indicates there are no fault conditions on the switch.

  • Page 16

    Introducing the HP 2920 Switches Fronts of the Switches Switch LEDs State Meaning LED Mode Indicates the port LEDs are displaying network activity information. Indicators Indicates port Mode LEDs are lit for ports in Full Duplex Mode. Off indicates half duplex.

  • Page 17

    ** The fast blinking behavior is an on/off cycle once every 0.5 seconds, approximately. † If the Save Power LED feature is configured for the switch (savepower led command), then all LEDs except the Power LED may be off. ‡ Applies only to HP 2920 switches that support PoE/PoE+.

  • Page 18

    Introducing the HP 2920 Switches Fronts of the Switches Table 1-4. Stacking-Related Switch and Port LED Behavior Switch LEDs State Meaning LED Mode For switches in a stack, the LED mode indications are the same as for standalone switches (see Table indicator 1-3), but all the switches in the stack are coordinated and all show the same LED mode.

  • Page 19: Led Mode Select Button And Indicator Leds

    S t a c k i n g ■ For HP 2920 switches that are in a stack, the Mode select button on every N o t e s : switch in the stack controls the LED mode for all the switches in the stack.

  • Page 20: Reset And Clear Buttons

    You can also disable these buttons by using the front-panel-security command. See the HP 2920 Management and Configuration Guide for a description of that command.

  • Page 21: Backs Of The Switches

    AC power connector Power Supplies There is a single slot for power supplies that can be installed into the HP 2920 switches. These power supplies are installed: HP X331 165W 100-240VAC to 12VDC PS (J9739A) -- a 165 watt power ■...

  • Page 22: G Expansion Module Slots

    Introducing the HP 2920 Switches HP 2920 10G Expansion Modules 10G Expansion Module Slots Each of the HP 2920 switches has two slots that can accept the two HP 2920 10G Expansion Modules. These modules provide additional high-speed network connectivity: ■...

  • Page 23: G Expansion Module Features

    HP 2920 10G Expansion Modules Contact your HP Networking authorized networking products reseller or your HP Networking representative for information on availability of other modules and transceivers. You can also visit the HP Networking products website www.hp.com/networking/support to get more information.

  • Page 24: G Expansion Module Leds

    HP 2920 10G Expansion Modules 10G Expansion Module LEDs The following LEDs are located on the bulkheads of the HP 2920 10G Modules. These LEDs are only viewable in the rear of the switch on the module itself. Table 1-5.

  • Page 25: Hp 2920 Stacking Module

    Introducing the HP 2920 Switches HP 2920 Stacking Module HP 2920 Stacking Module The HP 2920 2-port Stacking Module (J9733A) is a component you can add to an HP 2920 Switch to provide high-speed stacking connections to other HP 2920 switches. See “Stacking Information and Topologies”...

  • Page 26

    Introducing the HP 2920 Switches HP 2920 Stacking Module Table 1-6. Stacking Module LEDs Name Mode Description Stacking LEDs per module Module Stacking module is installed into the module slot and is Status operating correctly. (green/ orange) Stacking module is not installed into the module slot.

  • Page 27: Switch Features

    1000BASE-T RJ-45 or the SFP slot can be used for each port. ■ One module slot is provided in the back of the switches to support a stacking module to provide connectivity to other HP 2920 switches with stacking modules. See “Stacking Information and Topologies” on page 2- 25, the HP 2920 Advanced Traffic Management Guide for more information about stacking.

  • Page 28

    Support for many advanced features to enhance network performance— ■ for a description, see the HP 2920 Management and Configuration Guide at www.hp.com/networking/support. ■ Ability to update the switch software. Software updates are routinely available from HP.

  • Page 29: Included Parts

    HP X410 E-Series 1U Universal Rack Mounting Kit (J9583A). Optionally, it can also be mounted in an HP 10K rack using the HP 1U RK MT SWITCH 10K ALL rail kit, part number 356578-B21 and shelf kit AB469A, HP rx 16/26 Factory Rackmount Shelf Kit (both kits must be used, otherwise you will void the warranty).

  • Page 30: Installation Procedures

    N o t e If an HP 2920 switch is powered on for the first time without a stacking module installed, the stacking feature will be disabled and that status will be saved in the switch's running configuration. For more information, see “Stacking...

  • Page 31

    (Optional) Install the stacking cables (page 2-16). If you have installed the HP 2920 Stacking Module, you can now install up to two stacking cables and connect them to other switches in the desired stacking topology. (Optional) Install or remove SFP transceivers (page 2-17).

  • Page 32: Installation Precautions:

    ■ If the switch is to be shipped in a rack, it can be mounted and shipped in many four post racks using HP X410 E-Series 1U Universal Rack Mounting Kit (J9583A). Ensure the power source circuits are properly grounded, then use the ■...

  • Page 33: Prepare The Installation Site

    • On the sides of the switch, leave at least 7.6 cm (3 inches) for cooling, except if the switch is installed in an open EIA/TIA rack. Figure 2-1. Air flow direction of the HP 2920 switches...

  • Page 34: Verify The Switch Boots Correctly

    2. Verify the Switch Boots Correctly N o t e If an HP 2920 switch is powered on for the first time without a stacking module installed, the stacking feature will be disabled and that status will be saved in the switch's running configuration.

  • Page 35: Led Behavior:

    Installing the Switch Installation Procedures Check the LEDs on the switch as described below. Figure 2-3. Example of an HP 2920 24-port non-PoE switch Switch port LEDs Power and Test LED Fault LEDs Figure 2-4. Example of an HP 2920-48-port PoE+ switch...

  • Page 36: Optional) Install 10g Expansion Modules

    Installing the Switch Installation Procedures • The port LEDs on the front of the switch go into their normal operational mode: – If the ports are connected to active network devices, the port Link LEDs are on, and the port Mode LEDs behave according to the LED Mode selected.

  • Page 37: Verifying The Module Is Installed Correctly

    Installing the Switch Installation Procedures Verifying the Module is Installed Correctly Observe the Module Status (Mdl) and Fault LEDs on the front of the switch to verify the module is installed properly. Figure 2-6. Location of Module Status LEDs Module (Mdl) Status Fault LED If the module is installed properly and the switch is powered on, the module undergoes a self test that takes a few seconds.

  • Page 38: Optional) Install The Stacking Module

    Installing the Switch Installation Procedures 4. (Optional) Install the Stacking Module N o t e Hot swapping the Stacking Module is not supported. If a module is installed with the switch powered on, self-test of the module will not occur, the Mdl LED on the front of the switch and the Module Status LED on the module will blink orange.

  • Page 39

    If stacking cables are connected to the module and to a Stacking stacking port on the Module on another powered on HP 2920 switch, the LED goes ON module) to indicate the stacking port is enabled, connected, and detects a signal from the attached switch.

  • Page 40: Mount The Switch

    For other mounting options contact your local HP authorized network reseller or HP representative. Rack or Cabinet Mounting The HP 2920 Switches are designed to be mounted in any EIA-standard 2-post 19-inch telco rack or 4-post communication equipment cabinet. W A R N I N G...

  • Page 41

    Installing the Switch Installation Procedures N o t e The mounting brackets have multiple mounting holes and can be rotated allowing for a wide variety of mounting options. These include mounting the switch so its front face is flush with the face of the rack as shown in the illustration, or mounting it in a more balanced position.

  • Page 42: Rack Mounting The Hp 2920 Switch In A 4-post Rack

    Installing the Switch Installation Procedures Rack Mounting the HP 2920 switch in a 4-post rack Using the (J9583A) HP X410 E-Series 1U Universal Rack Mounting Kit, use a #1 Phillips (cross-head) screwdriver and attach the slider brackets to the switch with the included 8-mm M4 screws.

  • Page 43: Horizontal Surface Mounting

    Installing the Switch Installation Procedures Figure 2-13. Installing the switch Horizontal Surface Mounting Place the switch on a table or other horizontal surface. The switch comes with rubber feet in the accessory kit that can be used to help keep the switch from sliding on the surface.

  • Page 44: Optional) Install Stacking Cables

    (not the tab) to make sure that it is fully latched. Figure 2-14. Installing a stacking cable stacking cable b. Connect the other end of the cable to a Stacking Module in another HP 2920 switch. See page 2-25 for connectivity.

  • Page 45: Optional) Install Transceivers

    7. (Optional) Install Transceivers You can install or remove transceivers from the slots on the front of the switch, or in the HP 2920 2-Port 10GbE SFP+ Module in the back of the switch, without having to power off the switch.

  • Page 46: Removing A Transceiver:

    S t a c k i n g N o t e If you are stacking your HP 2920 switches, then the first switch you should power on is the switch that you want to be the stack Commander. The second switch that you power on should be the one that you want to be the stack Standby.

  • Page 47: Connect The Network Devices

    Installing the Switch Installation Procedures 9. Connect the Network Devices Connect the network cables, described under “Cabling Infrastructure” (page 2-5), from the network devices or your patch panels to the fixed RJ-45 ports on the switch or to any transceivers installed in the switch. Using the RJ-45 Connectors To connect: Figure 2-16.

  • Page 48: Connecting A Fiber Cable

    Installing the Switch Installation Procedures Connecting a fiber cable To connect: Figure 2-17. Connecting fiber optic cable 1. Remove the dust covers from the cable connectors and the port. 2. Aligning the notches on the cable connectors with the slots of the port, press the cable connector into the port until it snaps into place.

  • Page 49

    (SP2 or later), and Windows 7 (SP1 or later). The drivers can be found on the HP Web site at www.hp.com/networking/support. On that web site, follow these steps: Type your product model (for example, 2920), or product number in the Auto Search text box. Select one of the switches from the drop down list.

  • Page 50: Configuring The Management Console Connection

    Installing the Switch Installation Procedures Configuring the Management Console Connection To configure a console to manage the switch through the console port connection: Configure the PC terminal emulator as a DEC VT-100 (ANSI) terminal, or use a VT-100 terminal. Configure the terminal with the following settings: •...

  • Page 51: Setting Up A Console Connection

    “Press any key to continue”. b. Press any key to display the switch console command (CLI) prompt; for example: HP 2920# Continue the console session to configure the switch by following the procedure in “Minimal Configuration Through the Out-of-Band Console Connection”...

  • Page 52: Console Cable Pinouts

    Installing the Switch Installation Procedures Console Cable Pinouts The console cable has an RJ-45 plug on one end and a DB-9 female connector on the other end. Table 2-3 describes the mapping of the RJ-45 to DB-9 pins. Figure 2-19. RJ-45 to DB-9 pinouts Table 2-3.

  • Page 53: Stacking Information And Topologies

    N o t e If an HP 2920 switch is powered on for the first time without a stacking module installed, stacking will be disabled and that will be saved in the switch's running configuration.

  • Page 54: Chain Topologies

    Installing the Switch Stacking Information and Topologies Chain Topologies Up to 4 switches may be stacked in an open-ended chain with single cables between each pair of switches. N o t e Chain topologies are not recommended because a single failure (switch, stacking module, or cable) will cause switch-to-switch communication failures between switches that are located on opposite sides of the failure.

  • Page 55: Ring Topologies

    Installing the Switch Stacking Information and Topologies Ring Topologies Up to 4 switches may also be connected in closed ring topologies. Ring topologies afford some protection from a single failure because communications between the switches continues, in a direction away from the failure.

  • Page 56: Sample Network Topologies

    Either cable type can be used because of the “Auto MDI-X” features on the switch. Figure 2-24. Example as a Desktop Switch Implementing PoE/PoE+ Server HP 2920-24G Switch Twisted-pair IP Telephones straight-through or crossover cables...

  • Page 57

    Ethernet NIC The HP 2920 Switch also works well as a segment switch. That is, with its high performance, it can be used for interconnecting network segments – simply connect the other network switches that form those segments to the HP 2920 Switch.

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    As shown in Figure 2-28, the IP telephones have been inserted in between the HP 2920-PoE+ switch and the PCs, and a WAP has been connected to the HP 2920-PoE+ switch. Only devices directly connected to the PoE+ switches can receive PoE/PoE+ power.

  • Page 59: Recommended Minimal Configuration

    For more information on using the switch console and the other switch management interfaces: the web browser interface and the SNMP manage- ment tool, HP Intelligent Management Center (IMC), please see the Manage- ment and Configuration Guide, which is on the HP Networking web site at www.hp.com/networking/support. Recommended Minimal Configuration In the factory default configuration, the switch has no IP (Internet Protocol) address and subnet mask, and no passwords.

  • Page 60: Minimal Configuration Through The Console Port Connection

    “Setting Up a Console Connection” on page 2- The HP 2920 command-line prompt should be displayed on the console screen, typically with the switch model number; for example: HP 2920# At the prompt, enter the setup command to display the Switch Setup screen.

  • Page 61

    Press Enter, then S (for Save). The following fields are displayed in the Setup screen. For more information on these fields, see the Management and Configuration Guide, which is on the HP Networking web site at www.hp.com/networking/support. Parameter Default System Name blank Optional;...

  • Page 62: Where To Go From Here: Networked Connections

    Web browser interface (see “Starting a Web Browser Session on page 3-6). SNMP-based network management station using a tool such as HP IMC. ■ For more information on these management interfaces and all the features that you can configure on the switch, refer to the Management and...

  • Page 63

    Getting Started With Switch Configuration Where to Go From Here: Networked Connections The following types of networked connections are supported on an HP 2920 Switch: Out-of-band networked connection through the dedicated Management ■ port To use: Connect an RJ-45 network cable to the Mgmt port to manage an HP 2920 Switch through Telnet from a remote PC or UNIX workstation.

  • Page 64: Using The Ip Address For Remote Switch Management

    Starting a Web Browser Session The HP 2920 Switch can be managed through a graphical interface that you can access from any PC or workstation on the network by running a web browser and typing in the switch’s IP address as the URL. No additional software installation is required to make this interface available;...

  • Page 65

    An extensive help system is also available for the web browser interface. To access the help system though, the subnet on which the switch is installed must have access to the internet, or HP IMC needs to be installed on a network management station that is on the subnet.

  • Page 67: Replacing Components

    4-4) H o t S w a p p i n g The HP 2920 10G Expansion Modules and the HP 2920 Stacking Module are not hop swappable. The switch must be powered off before installing or replacing any of these modules.

  • Page 68: Replacing The Power Supply

    Replacing the Power Supply Replacing the Power Supply If the HP 2920 Switches have replaceable power supplies. Replace the failed component as soon as possible. The PS (Power Supply) LED will blink simultaneously with the switch Fault LED indicating the power supply is having a problem, such as a failed fan.

  • Page 69: Replacing A 10g Expansion Module

    Replacing a 10G Expansion Module Replacing a 10G Expansion Module The HP 2920 10G Expansion Modules are not hot swappable. The switch must be powered off before replacing the module. When a 10G Expansion Module fails, the Module Status (Mdl) LED on the front of the switch and the Module Status LED on the module will blink orange simultaneously with the switch Fault LED.

  • Page 70: Replacing The Stacking Module

    Replacing the Stacking Module Replacing the Stacking Module The HP 2920 Stacking Module is not hot swappable. The switch must be powered off before replacing the module. When a stacking module fails, the Module Status (Mdl) LED on the front of the switch and the Module Status LED on the module will blink orange simultaneously with the switch Fault LED.

  • Page 71: Troubleshooting

    HP Intelligent Management Center (HP IMC), the SNMP-based network management tool. For more information, see the chapter “Troubleshooting” in the Management and Configuration Guide for your switch, which is on the HP Networking web site at www.hp.com/ networking/support.

  • Page 72: Basic Troubleshooting Tips

    If you no longer experience the problems, the new topology is probably at fault. Sample topologies are shown at the end of chapter 2 in this book, and some topology configuration guidelines can www.hp.com/networking/ be found online at the HP Networking web site, support.

  • Page 73

    Spanning Tree can be enabled through the switch console, the web browser interface, or HP IMC. The HP 2920 switches also support Trunking, which allows multiple network cables to be used for a single network connection without causing a data path loop. For more information on Spanning Tree and Trunking, see the Management and Configuration Guide for your switch at www.hp.com/networking/support.

  • Page 74: Diagnosing With The Leds

    Troubleshooting Diagnosing with the LEDs Diagnosing with the LEDs ■ Table 5-1 shows LED patterns on the switch that indicate switch problem conditions. ■ Table 5-2 shows LED patterns on the switches and on stacking modules in a stack that indicate stack-related problem conditions. Check in the tables for the LED pattern you see on your switch and stacking module.

  • Page 75: Diagnostic Tips

    A switch Try power cycling the switch. If the fault indication reoccurs, the switch may have failed. hardware failure Call your HP authorized LAN dealer, or use the electronic support services from HP to get has occurred. All assistance. See “HP Customer Support Services”...

  • Page 76

    Troubleshooting Diagnosing with the LEDs Problem Solution Try the following procedures: • For the indicated port, verify both ends of the cabling, at the switch and the connected device, are connected properly. • Verify the connected device and switch are both powered on and operating correctly. •...

  • Page 77

    2. If the fault indication reoccurs, the 10G Expansion Module may have to be replaced. Module has experienced a If necessary to resolve the problem, contact your HP authorized LAN dealer, or use the fault. electronic support services from HP to get assistance. See “HP Customer Support...

  • Page 78

    Troubleshooting Diagnosing with the LEDs Table 5-2. Stacked Switch and Stacking Module LED Error Indicators LED Pattern Indicating Problems Module Diag Tips Fault Mdl ** Switch Port LEDs Port Link LEDs † blink orange † † see tip 2 blink orange blink orange †...

  • Page 79

    If necessary to resolve the problem, contact your HP authorized stacking cable LAN dealer, or use the electronic support services from HP to – the stacking module or switch at the get assistance. See “HP Customer Support Services”...

  • Page 80

    Advance Traffic Management Guide for your switch for more also be blinking orange simultaneously. information. If necessary to resolve the problem, contact your HP authorized LAN dealer, or use the electronic support services from HP to get assistance. See “HP Customer Support Services” on page 5-15.

  • Page 81: Proactive Networking

    Troubleshooting Proactive Networking Proactive Networking The HP 2920 Switches have built-in management capabilities that proactively help you manage your network, they include: finding and helping you fix the most common network error conditions ■ (for example, faulty network cabling, and non-standard network topolo- gies) ■...

  • Page 82: Hardware Diagnostic Tests

    Troubleshooting Hardware Diagnostic Tests Hardware Diagnostic Tests Testing the Switch by Resetting It If you believe the switch is not operating correctly, you can reset the switch to test its circuitry and operating code. To reset a switch, either: ■ unplug and plug in the power cord (power cycling) ■...

  • Page 83: Testing Twisted-pair Cabling

    Configuration Guide for your switch at www.hp.com/networking/support. These tests can also be performed from an SNMP network management station running a program that can manage the switch, for example, HP IMC. Testing End-to-End Network Communications Both the switch and the cabling can be tested by running an end-to-end communications test -- a test that sends known data from one network device to another through the switch.

  • Page 84: Restoring The Factory Default Configuration

    For both the save and restore processes, you can use the console copy command. For more information on this command, see www.hp.com/ the Management and Configuration Guide for your switch at networking/support.

  • Page 85: Downloading New Switch Software

    Additionally, your HP authorized network reseller can provide you with assistance, both with services that they offer and with services offered by HP. Before Calling Support Before calling your networking dealer or HP Support, to make the support...

  • Page 87: Switch Specifications

    100-240 VAC and either 50 or 60 Hz. between 100-240 VAC, and either 50 or 60 Hz. These values represent the maximum current that these power supplies could draw. For typical values, see the HP 2920 Switch data sheets on the HP Networking web site: www.hp.com/networking/support.

  • Page 88: Environmental

    If you are installing any SFP or SFP+ transceivers, the operating ambient temperature should not exceed 45°C (113°F). Acoustics Acoustics HP 2920-24G Switch (J9726A) Geraeuschemission LpA=35.9 dB am fiktiven Arbeitsplatz nach DIN 45635 T.19 Noise Emission LpA=35.9 dB at virtual workspace according to DIN 45635 T.19 HP 2920-24G-PoE+ Switch (J9727A) Geraeuschemission LpA=37.1 dB am fiktiven Arbeitsplatz nach DIN 45635 T.19...

  • Page 89: Connectivity Standards

    Switch Specifications Connectivity Standards Use only supported HP SFP and SFP+ transceivers. Table A-1. Technology Standards and Safety Compliance Laser safety information Technology Compatible with these IEEE EN/IEC standard SFP+ standards compliance Lasers Lasers 10-T IEEE 802.3 10BASE-T 100-TX IEEE 802.3u 100BASE-TX 1000-T IEEE 802.3ab 1000BASE-T...

  • Page 90: G Expansion Modules Specifications

    Specifications 10G Expansion Modules Specifications 10G Expansion Modules Specifications Physical Product Weight Width Depth Height HP 2920 2-Port 10GbE 0.159 kg 10.16 mm 10.62 mm 3.56 mm SFP+ Module (J9731A) (0.35 lb) (4 in) (4.18 in) (1.4 in) HP 2920 2-Port 0.159 kg...

  • Page 91: Stacking Module Specifications

    Stacking Module Specifications Stacking Module Specifications Physical Product Weight Width Depth Height HP 2920 2-Port Stacking 0.159 kg 6.83 mm 20.5 mm 2.87 mm Module (J9733A) (0.35 lb) (2.69 in) (8.07 in) (1.13 in) Environmental Operating Temperature: 0°C to 55°C (32°F to 131°F) Operating Relative Humidity: 15% to 95% at 40°C (104°F) non-condensing...

  • Page 93: Cabling Specifications

    Cabling and Technology Information This appendix includes switch connector information and network cable information for cables that should be used with the HP switches. N o t e Incorrectly wired cabling is a common cause of problems for LAN communications. HP recommends that you work with a qualified LAN cable installer for assistance with your cabling requirements.

  • Page 94

    Cabling and Technology Information Note on 1000BASE-T Cable Requirements The Category 5 networking cables that work for 100BASE-TX connections should also work for 1000BASE-T, as long as all four-pairs are connected. But, for the most robust connections, you should use cabling that complies with the Category 5e specifications, as described in Addendum 5 to the TIA-568-A standard (ANSI/ TIA/EIA-568-A-5).

  • Page 95: Technology Distance Specifications

    Cabling and Technology Information link to drop if moved. Therefore, HP recommends using Category 6A patch cables, or using cable management options to tie down (dress) the Category 6 patch cables so they cannot move. Technology Distance Specifications Table B-2. Technology Distance Specifications...

  • Page 96: Mode Conditioning Patch Cord

    Cabling and Technology Information Table B-2. Technology Distance Specifications(Continued) Technology Supported cable type Multimode fiber Supported distances modal bandwidth 10-Gig LR single mode fiber 2 - 10,000 meters 10-Gig ER single mode fiber 2 - 40,000 meters Cat 6 cabling requires TIA TSB-155A testing for 500 MHz operation and ANEXT. For distances less than 20km, a 10dB attenuator must be used.

  • Page 97: Installing The Patch Cord

    Installing the Patch Cord As shown in the illustration below, connect the patch cord to the HP transceiver with the section of single mode fiber plugged in to the Tx (transmit) port. Then, connect the other end of the patch cord to your network cabling patch panel, or directly to the network multimode fiber.

  • Page 98: Twisted-pair Cable/connector Pin-outs

    -- you no longer have to use crossover cables, although crossover cables can also be used for any of the connections. If you connect an HP 2920 Switch twisted-pair port to another switch or hub, which typically have MDI-X ports, the 2920 port automatically operates as an MDI port.

  • Page 99: Connections

    Straight-Through Twisted-Pair Cable for 10 Mbps or 100 Mbps Network Connections Because of the HP Auto-MDIX operation of the 10/100 ports on the switch, for all network connections, to PCs, servers or other end nodes, or to hubs or other switches, you can use straight-through cables.

  • Page 100: Connection

    Crossover Twisted-Pair Cable for 10 Mbps or 100 Mbps Network Connection The HP Auto-MDIX operation of the 10/100 ports on the switch also allows you to use crossover cables for all network connections, to PCs, servers or other end nodes, or to hubs or other switches.

  • Page 101

    Cabling and Technology Information Twisted-Pair Cable/Connector Pin-Outs Straight-Through Twisted-Pair Cable for 1000 Mbps Network Connections 1000Base-T connections require that all four pairs or wires be connected. Cable Diagram N o t e Pins 1 and 2 on connector “A” must be wired as a twisted pair to pins 1 and 2 on connector “B”.

  • Page 103

    Index Numerics connecting cables to switch ports … 2-19 effects of non-standard cables … 5-2 10/100Base-TX ports infrastructure requirements … 2-5 location on switch … 1-2 cables, twisted pair 1000Base-BX … B-3 Auto-MDIX feature … B-6 fiber-optic cable specifications … B-3 category 3, 4, 5 …...

  • Page 104

    out-of-band connection … 2-21, 2-23 location on switch … 1-2 RJ-45 and USB port interaction … 2-21 showing error conditions … 5-4 switch setup screen … 3-2 FDx LED … 1-8 telnet access … 3-6 features terminal configuration … 2-22 console …...

  • Page 105

    mounting the switch in a rack or cabinet … 2-12 precautions … 2-4 stacking module … 2-9, 2-10 on a horizontal surface … 2-15 LEDs Act … 1-8 behavior during switch boot … 2-7 blinking definition … 1-9, 1-10 network cables checking during troubleshooting …...

  • Page 106

    select button … 1-11 selecting the display … 1-11 safety specifications … A-2 port LEDs segment switch description … 1-7 sample topology … 2-29 Link … 1-7, 1-16, 1-18 selecting the Port LED View display … 1-11 Mode … 1-7 self test normal operation …...

  • Page 107

    included parts … 2-1 connecting to fixed full-duplex devices … 5-2 LED descriptions … 1-7 diagnostic tests … 5-12 mounting in a rack or cabinet … 2-12 effects of improper topology … 5-2 mounting on horizontal surface … 2-15 effects of non-standard cables … 5-2 switch boot link test …...

  • Page 110: February

    © Copyright 2013 Hewlett-Packard Development Company, L.P. The information February 2013 contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty.

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