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4-1

Troubleshooting

This section describes how to troubleshoot the switch. For more information,
see the chapter “Troubleshooting” in the

HP 1820 Switch Series Management

and Configuration Guide

, available on the HP Web site,

http://www.hp.com/support/manuals

This chapter describes the following:

■

basic troubleshooting tips (

page 4-1

)

■

diagnosing with the LEDs (

page 4-2

)

■

forgotten IP address or password (

page 4-5

)

■

testing the switch by resetting it (

page 4-6

)

■

HP Customer Support Services (

page 4-6

)

Basic Troubleshooting Tips

Common problems and their solutions are listed in the following table.

Problem

Resolution

Switch fails Power-On Self
Test (POST)

Troubleshoot using the LEDs. See “Diagnosing with the
LEDs” on page 4-2

Link light does not light when
a cable is connected.

Look for loose or obviously faulty connections. If they
appear to be OK, make sure the connections are snug. If
that does not correct the problem, try a different cable.

Содержание 1820-24G-PoE Plus

Страница 1: ...ation and Getting Started Guide HP 1820 8G Switch J9979A HP 1820 24G Switch J9980A HP 1820 48G Switch J9981A HP 1820 8G PoE 65W Switch J9982A HP 1820 24G PoE 185W Switch J9983A HP 1820 48G PoE 370W Switch J9984A Power over Ethernet ...

Страница 2: ......

Страница 3: ...HP 1820 Switch Series Installation and Getting Started Guide ...

Страница 4: ...Y 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 The only warranties for HP products and services are s...

Страница 5: ... 1 Prepare the Installation Site 2 6 2 Verify the Switch Passes Self Test 2 6 3 Mount the Switch 2 9 4 Connect the Switch to a Power Source 2 13 5 Connect the Network Cables 2 14 6 Installing or Removing SFPs 2 15 3 Configuring the Switch Initial Configuration 3 1 Using the 192 168 1 1 IP Address 3 3 Where to Go From Here 3 4 4 Troubleshooting Basic Troubleshooting Tips 4 1 Diagnosing with the LED...

Страница 6: ...2 Standards A 3 Cabling and Technology Information Specifications A 4 Technology Distance Specifications A 5 Mode Conditioning Patch Cord A 5 Installing the Patch Cord A 6 Twisted Pair Cable Connector Pin Outs A 7 Straight through Twisted Pair Cable for 10 Mbps or 100 Mbps Network Connections A 9 Crossover Twisted Pair Cable for 10 Mbps or 100 Mbps Network Connection A 10 Straight Through Twisted ...

Страница 7: ... auto sensing 10 100 1000BASE T RJ 45 ports and four SFP slots for supported HP SFP fiber optic transceivers ports 49 to 52 The 1820 8G PoE Switch has 8 auto sensing 10 100 1000BASE T RJ 45 ports The switch supports the IEEE 802 3at standard and is capable of providing 65 watts of PoE power through ports 1 4 The 1820 24G PoE Switch has 24 auto sensing 10 100 1000BASE T RJ 45 ports and two SFP slot...

Страница 8: ...000BASE T RJ 45 ports Reset button Link Act and Speed LEDs PoE PD port HP 1820 24G Switch J9980A Power and Fault Locator LEDs Link Act and Speed LEDs 10 100 1000BASE T RJ 45 ports Reset button SFP slots HP 1820 48G Switch J9981A Power and Fault LocatorLEDs Link Act and Speed LEDs 10 100 1000BASE T RJ 45 ports Reset button SFP slots ...

Страница 9: ...button Reset button PoE ports 1 4 HP 1820 24G PoE 185W Switch J9983A Link Act and Mode LEDs 10 100 1000BASE T RJ 45 ports SFP slots Power and Fault Locator LEDs Reset button Mode button PoE ports 1 12 HP 1820 48G PoE 370W Switch J9984A Link Act and Mode LEDs 10 100 1000BASE T RJ 45 ports SFP slots Power and Fault Locator LEDs Reset button Mode button PoE ports 1 24 ...

Страница 10: ...witch only A network connection to the PoE PD port from a PoE PSE device powers on the switch SFP slots for fiber or copper uplinks Using HP SFPs these products support optional network connectivity with the following speeds and technologies Transceiver Form Factor and Connector1 Speed Technology Cabling SFP Connector 100 Mbps 100 FX Fiber multimode LC 1 Gbps 1000 T Copper twisted pair RJ 45 1000 ...

Страница 11: ...n from the connected device Off One of these condition exists no active network cable is connected to the port the port is not receiving link beat or sufficient light Green Mode has been enabled Blinking Indicates that there is network activity on the port If the Link Act LED is blinking simultaneously with the Fault Locator LED it indicates a fault on the port The blinking behavior 1 second on 1 ...

Страница 12: ...face are removed Enabling Smart Recover Mode When the switch is booting the Fault LED flashes rapidly three times in succession Within 2 seconds of the third LED flash press and hold down the Reset button for 5 seconds Once the button press is detected the Fault LED blinks for half a second each second until the button is released For more information on Smart Recover mode see the HP 1820 Switch S...

Страница 13: ...on when connected with EEE compliant client devices automatic learning of MAC addresses in each switch s 8K address 8 and 24 port switches or 16K address 48 port switches forwarding table automatically negotiated full duplex operation for all 10 100 1000BASE T RJ 45 ports when connected to other auto negotiating devices easy management of the switch through several available interfaces Web browser...

Страница 14: ...1 8 Switch Overview Switch Features ...

Страница 15: ...entations This chapter shows how to install the switches Included Parts The following components ship with an HP 1820 Switch Documentation kit Accessory kits Quick Setup Guide Safety and Regulatory information Software License Warranty and Support information 1820 8G and 1820 8G PoE Switch Kit number 5066 2232 two rack mounting brackets eight 8 mm M4 screws to attach the mounting brackets to the s...

Страница 16: ...eet Kit number 5092 0769 two wall table mounting brackets Country Region HP 1820 24G HP 1820 48G and HP 1820 24G PoE HP 1820 48G PoE 1 Argentina Australia New Zealand Brazil Chile China Continental Europe Denmark India Israel Japan Switzerland South Africa South Korea Taiwan Thailand UK Hong Kong Singapore Malaysia US Canada Mexico 8120 6869 8121 0834 8121 1069 8120 6980 8120 8377 8120 6802 8120 6...

Страница 17: ...6314 8121 0963 8120 8699 8121 1081 8120 8367 8121 0514 Wall Plug in AC DC Power Adapters AC Power cords are not used United States Canada Mexico Continental Europe Denmark Norway Sweden Switzerland Israel Vietnam Indonesia 5184 5863 5184 5864 Universal Inline AC DC Power Adapter model PA2 All countries regions 5066 2164 Power Cords for Inline AC DC Power Adapter Australia New Zealand China Contine...

Страница 18: ...came with other HP Networking products may result in damage to the equipment For those switches that use a power cord if your installation requires a different power cord than the one supplied with the switch be sure to use a power cord displaying the mark of the safety agency that defines the regulations for power cords in your country The mark is your assurance that the power cord can be used sa...

Страница 19: ...24 and 48 port switches can be mounted in a 19 inch telco rack in an equipment cabinet on a wall under a table or on a horizontal surface The HP 1820 8 port switches can be mounted on a wall under a table or on a horizontal surface 4 Connect power to the switch page 2 13 Once the switch is mounted plug it into the main power source 5 Connect the network devices page 2 14 Using the appropriate netw...

Страница 20: ...it is working properly by plugging it into a power source and confirming that it passes self test 1 For the HP 1820 24 and 48 port switches connect the power cord suppliedwith theswitch tothe power connectoron the back ofthe switch and then into a properly grounded electrical outlet For the HP 1820 8 port switches connect the AC DC adapter s power cord to the power connector on the back of the swi...

Страница 21: ...ated near the switch installation The switches automatically adjusts to any voltage between 100 127 or 200 240 volts and either 50 or 60 Hz There are no voltage range settings required Connectthepowercordtothe switch and an AC power outlet HP 1820 8G Switch HP 1820 24 and 48 Port Switches Connectwallplug inAC DCpoweradapter to the switch and an AC power outlet HP 1820 8G PoE Switch ConnectinlineAC...

Страница 22: ...d either 50 or 60 Hz 2 Check the LEDs on the switch as described below When the switch is powered on it performs its diagnostic self test The self test takes approximately 45 seconds to complete Self Test LED Behavior During the self test Initially the Power Fault Locator and all port LEDs turn on After several seconds the Power and Fault Locator LEDs remain on and the port LEDs turn off Then each...

Страница 23: ...link for 100 Mbps links or stay off for 10 Mbps links If the ports are not connected to active network devices the Link Act and Spd LEDs will stay off If the LED display is different than what is described above the self test has not completed correctly Refer to Troubleshooting for diagnostic help 3 Remove power to the switch before mounting 3 Mount the Switch The switch can be mounted in these wa...

Страница 24: ... cabinet and install all four clips Then proceed to step 2 to install the switch in the cabinet 1 Use a 1 Phillips cross head screwdriver and attach the mounting brackets to the switch with the included 8 mm M4 screws Not 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 flu...

Страница 25: ...valent To mount the HP 1820 24 and 48 port switches follow these steps 1 Use a 1 Phillips cross head screwdriver and attach the mounting brackets to the switch with the included 8 mm M4 screws 2 Attach the switch to the wall or wood surface with two 5 8 inch number 12 wood screws not included To mount the HP 1820 8 port switches follow these steps 1 In the required location mark the position for t...

Страница 26: ...ch 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 Attach the rubber feet to the four corners on the bottom of the switch within the embossed angled lines Use a sturdy surface in an uncluttered area You may want to secure the networking cables and switch power cord to the table leg or...

Страница 27: ...t included to attach the switch to an immovable object 4 Connect the Switch to a Power Source 1 For the HP 1820 24 port and 48 port switches plug the included power cord into the switch s power connector and into a nearby AC power source For the HP 1820 8 port switches plug the AC DC adapter s power cord into the switch and then plug the AC DC power adapter into a nearby AC power source ...

Страница 28: ...els to the fixed RJ 45 ports on the switch or to any SFP transceivers you have installed in the switch When a network cable from an active network device is connected to the port the port LEDs for that port should go on If the port LEDs do not go on when the network cable is connected to the port see Diagnosing with the LEDs on page 4 2 100 ohm unshielded or shielded twisted pair cable Category 3 ...

Страница 29: ... then turn off Not e s Ensure the network cable is NOT connected when you install or remove an SFP C a u t i o n Use only supported genuine HP SFPs with your switch Non HP SFPs are not supported and their use may result in product malfunction Should you require additional HP SFPs contact your HP Networking Sales and Service Office or authorized dealer Installing the SFPs Remove the protective plas...

Страница 30: ...To remove the SFPs that have the wire bail lower the bail until it is approximately horizontal and then using the bail pull the SFP from the slot Replace the protective plastic cover on the SFP Connecting Cables to SFPs If you have any SFPs installed in the switch the type of network connections you will need to use depends on the type of SFPs you have installed See the table on page 1 4 and appen...

Страница 31: ...for switch security Follow these procedures to access the switch s Web interface to perform the switch configuration 1 Place the switch close to the PC that you will use for configuration It helps if you can see the front panel of the switch while working from your PC 2 Connect power to the switch and then start your PC if it is not already running and wait until the switch and PC have finished th...

Страница 32: ...s opens the login screen for the switch s Web browser interface from which you perform the next steps 6 Enter the default username admin and click Login to start a switch Web browser interface session By default there is no password 7 To configure a password on the switch Web interface click Maintenance Password Manager and enter the Current Password Define a New Password and reenter it in the Con...

Страница 33: ...work and Sharing Center b Click Local Area Connection and then click Properties If you are prompted for an administrator password or for a confirmation type the password or provide confirmation c Click Internet Protocol Version 4 TCP IPv4 and then click Properties Not e Record your PC s current IP settings to be able to restore them later if needed 3 Click Use the following IP address and then in ...

Страница 34: ... Web interface Go back to step 6 on the page 3 2 to configure the switch Where to Go From Here For more information on the Web browser interface and all the features that can be configured on the HP 1820 Switch Series see the HP 1820 Switch Series Management and Configuration Guide which is available on the HP Web site http www hp com support manuals ...

Страница 35: ...forgotten IP address or password page 4 5 testing the switch by resetting it page 4 6 HP Customer Support Services page 4 6 Basic Troubleshooting Tips Common problems and their solutions are listed in the following table Problem Resolution Switch fails Power On Self Test POST Troubleshoot using the LEDs See Diagnosing with the LEDs on page 4 2 Link light does not light when a cable is connected Lo...

Страница 36: ...leshooting LED patterns for General Switch Troubleshooting 1 Check in the table below for the LED pattern you see on your switch 2 Refer to the corresponding diagnostic tip on the next few pages LED Pattern Indicating Problems Diagnostic Tips Power Fault Port LED Off with power cord plugged in On Prolonged On On Blinking Blinking On Off Off with cable connected This LED is not important for the di...

Страница 37: ...pport services from HP to get assistance The network port for which the Link LED is blinking has experiencedaselftest or initialization failure Try power cycling the switch If the fault indication reoccurs the switch port may have failed To confirm try a different port that appears to be good Call your HP authorized network reseller or use the electronic support services from HP to get assistance ...

Страница 38: ...fer to the corresponding diagnostic tip Table 1 1 LED Error Indicators Diagnostic Tips LED Pattern Indicating Problems Diagnostic Tips Fault Port Link Port Mode PoE Off Fast Blinking Green FastBlinking Green Fast Blinking Fast Blinking Green FastBlinking Green Tip Problem Solution PoE oversubscription condition All available PoE power is already taken by higher priority ports Ifpossibleaddaddition...

Страница 39: ...ddress or password you can restore the factory default configuration by pressing the Reset button To execute the factory default reset on the switch perform these steps 1 Using a small thin tool with blunt ends such as a paper clip press the Reset button on the front of the switch 2 Continue to press the Reset button for more than 5 seconds 3 Release the Reset button The switch will then complete ...

Страница 40: ...y HP Before Calling Support Before calling your networking dealer or HP Support to make the support process most efficient you first should have retrieved the following information Information Item Information Location product identification including SFPs the front of the switch and on labels on the SFPs detailsabouttheswitch sstatusinclud ing the operating software OS ver sion acopyoftheswitchco...

Страница 41: ... 7 3 lb 1820 8G PoE J9982A 25 40 cm 10 0 in 15 95 cm 6 28 in 4 4 cm 1 73 in 0 9 kg 2 0 lb 1820 24G PoE J9983A 44 25 cm 17 42 in 24 61 cm 9 69 in 4 4 cm 1 73 in 3 3 kg 7 3 lb 1820 48G PoE J9984A 44 25 cm 17 42 in 32 26 cm 12 7 in 4 4 cm 1 73 in 4 4 kg 9 7 lb AC voltage Maximum current Frequency range 1820 8G J9979A 1 3 100 240 volts 0 2 A 50 60 Hz 1820 24G J9980A 2 100 127 volts 200 240 volts 0 5 A...

Страница 42: ... 2006 A11 2009 A1 2010 A12 2011 IEC60950 1 2005 Am1 2009 CSA22 2 No 60950 1 07 2nd UL60950 1 2nd EN 60825 1 2007 IEC 60825 1 2007 Class 1 Operating Non Operating Temperature 0 C to 40 C 32 F to 104 F 40 C to 70 C 40 F to 158 F Relative humidity non condensing 15 to 95 at 40 C 104 F 15 to 95 at 65 C 149 F Maximum altitude 3 0 Km 10 000 ft 4 57 Km 15 000 ft Noise Emmission 1820 24G PoE J9983A Geraeu...

Страница 43: ...SFP Lasers 10 T 100 TX 1000 T IEEE 802 3 10BASE T IEEE 802 3u 100BASE TX IEEE 802 3ab 1000BASE T 100 FX IEEE 802 3u 100BASE FX EN IEC 60825 Class 1 Laser Product Laser Klasse 1 1000 SX IEEE 802 3z 1000BASE SX EN IEC 60825 Class 1 Laser Product Laser Klasse 1 1000 LX IEEE 802 3z 1000BASE LX EN IEC 60825 Class 1 Laser Product Laser Klasse 1 ...

Страница 44: ...include the patch cables that connect the switch and other end devices to the patch panels on your site The patch cables are frequently overlooked when testing cable and they must also comply with the cabling standards Twisted pair copper 10 Mbps Operation Category 3 4 or 5 100 ohm unshielded twisted pair UTP or shielded twisted pair STP cable complying with IEEE 802 3 10BASE T specifications 100 ...

Страница 45: ...mission errors on those ports usually CRC or FCS errors you may need to install one of these patch cords between the fiber optic port in your switch and your multimode fiber optic network cabling at both ends of the network link The patch cord consists of a short length of single mode fiber cable coupled to graded index multimode fiber cable on the transmit side and only multimode cable on the rec...

Страница 46: ...k multimode fiber If you connect the patch cord directly to the network cabling you may need to install a female to female adapter to allow the cables to be connected together Example Connecting a Mode Conditioning Patch Cord for Gigabit LX Make sure you purchase a patch cord that has appropriate connectors on each end and has multimode fibers that match the characteristics of the multimode fiber ...

Страница 47: ...cables or crossover cables If you happen to use a correctly wired crossover cable though the switch will still be able to automatically detect the MDI MDI X operation and link correctly to the connected device Not e Using Fixed Configurations If the port configuration is changed to any of the fixed configurations though for example 100 Mbps full duplex the port operates as MDI X only and the corre...

Страница 48: ... Connector Pin Outs For 100 Mbps connections to the ports use 100 ohm Category 5 UTP or STP cable only as supported by the IEEE 802 3u Type 100BASE TX standard For 1000 Mbps connections 100 ohm Category 5e or better cabling is recommended ...

Страница 49: ...ps Full Duplex the ports operate as MDI X ports and straight through cables must be then used for connections to PC NICs and other MDI ports Cable Diagram Not e Pins 1 and 2 on connector A must be wired as a twisted pair to pins 1 and 2 on connector B Pins 3 and 6 on connector A must be wired as a twisted pair to pins 3 and 6 on connector B Pins 4 5 7 and 8 are not used in this application althoug...

Страница 50: ... ports operate as MDI X ports and crossover cables must be then used for connections to hubs or switches or other MDI X network devices Cable Diagram Not e Pins 1 and 2 on connector A must be wired as a twisted pair to pins 3 and 6 on connector B Pins 3 and 6 on connector A must be wired as a twisted pair to pins 1 and 2 on connector B Pins 4 5 7 and 8 are not used in this application although the...

Страница 51: ...tor A must be wired as a twisted pair to pins 1 and 2 on connector B Pins 3 and 6 on connector A must be wired as a twisted pair to pins 3 and 6 on connector B Pins 4 and 5 on connector A must be wired as a twisted pair to pins 4 and 5 on connector B Pins 7 and 8 on connector A must be wired as a twisted pair to pins 7 and 8 on connector B Pin Assignments For 1000BASE T operation all four pairs of...

Страница 52: ...A 12 Specifications Twisted Pair Cable Connector Pin Outs ...

Страница 53: ... if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense You are cautioned that changes or modifications not expressly approved by the party responsible for...

Страница 54: ...B 2 EMC Regulatory Statements Regulatory Statements Japan VCCI Class A Korea Taiwan ...

Страница 55: ...ion A 9 A 11 switch to switch or hub connection A 10 cables twisted pair HP Auto MDIX feature A 7 wiring rules A 7 cables twisted pair connector pin outs A 7 cabling infrastructure 2 6 Clear button location on switch 1 2 restoring factory default configuration 1 6 4 5 configuration restoring factory defaults 1 6 connecting the switch to a power source 2 13 console port location on switch 1 2 cross...

Страница 56: ...rk ports connecting to 2 14 2 15 location on switch 1 4 types of 1 4 P parts included with the switch 2 1 physical specifications switch A 1 pin outs twisted pair cables A 7 PoE LED patterns 4 4 PoE troubleshooting 4 4 port LEDs normal operation 2 9 ports 10 100BASE TX location on switch 1 2 1 3 10 100Base TX location on switch 1 2 1 3 connecting to 2 14 2 15 HP Auto MDIX feature A 7 network conne...

Страница 57: ...ption 1 2 included parts 2 1 mounting in a rack or cabinet 2 9 2 11 mounting on horizontal surface 2 12 physical specifications A 1 switch operation verifying after installation 2 6 T tips for troubleshooting 4 1 troubleshooting 4 1 basic tips 4 1 common network problems 4 1 twisted pair cable cross over cable pin out A 10 pin outs A 7 A 9 A 11 straight through cable pin out A 9 A 11 switch to com...

Страница 58: ...Index 4 ...

Страница 59: ...erein 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 HP will not be liable for technical or editorial errors or omissions contained herein February 2015 Manual Part Number 5998 5835 ...

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