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21

Grounding the switch

WARNING!

Correctly connecting the switch grounding cable is crucial to lightning protection and EMI protection.

NOTE:

The power and grounding terminals in this section are for illustration only.

The power input end of the switch has a noise filter, whose central ground is directly connected to the chassis
to form the chassis ground (commonly known as PGND). You must securely connect this chassis ground to the
earth so the faradism and leakage electricity can be safely released to the earth to minimize EMI
susceptibility of the switch.

You can ground the switch in one of the following ways, depending on the grounding conditions available
at the installation site:



Grounding the switch with a grounding strip



Grounding the switch with a grounding conductor buried in the earth ground



Grounding the switch by using the AC power cord

Grounding cable

The A3100 v2 Switch Series is provided with a yellow-green grounding cable. One end of the cable has an
OT terminal, and the other end is naked and soldered. See

Figure 26

.

Figure 26

Grounding cable

1

(1) OT terminal of the grounding cable

Grounding the switch with a grounding strip

If a grounding strip is available at the installation site, connect the grounding cable to the grounding strip.

WARNING!

Connect the grounding cable to the grounding system in the equipment room. Do not connect it to a fire
main or lightning rod.

NOTE:

The grounding cable supplied with the A3100 v2 Switch Series does not have an auxiliary OT terminal.

Connecting the grounding cable to the switch

To connect the grounding cable:

1.

Remove the grounding screw from the rear panel of the switch chassis.

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Summary of Contents for A3100-16 v2 EI

Page 1: ...tch JG222A HP A3100 24 v2 SI Switch JG223A HP A3100 8 v2 EI Switch JD318B HP A3100 16 v2 EI Switch JD319B HP A3100 24 v2 EI Switch JD320B HP A3100 8 PoE v2 EI Switch JD311B HP A3100 16 PoE v2 EI Switch JD312B HP A3100 24 PoE v2 EI Switch JD313B Part number 5998 1961 Document version 6W100 20110909 ...

Page 2: ... 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 set forth in the express warranty statements accompa...

Page 3: ...e switch into the 19 inch rack 15 Mounting the switch on a workbench 20 Grounding the switch 21 Grounding cable 21 Grounding the switch with a grounding strip 21 Grounding the switch with a grounding conductor buried in the earth ground 23 Grounding the switch by using the AC power cord 24 Connecting the power cord 24 Connecting an AC power cord to the switch 24 Connecting the DC power cord 25 Ver...

Page 4: ...dix A Technical specifications 39 A3100 v2 SI Switch Series technical specifications 39 A3100 v2 EI Switch Series technical specifications 40 Non PoE switches technical specifications 40 PoE switches technical specifications 41 Appendix B Ports and LEDs 44 Ports 44 Console port 44 10 100Base TX Ethernet port 44 Combo interface 44 10 100 1000Base T Ethernet port 45 100 1000Base X SFP port 45 LEDs 4...

Page 5: ...HP A3100 24 v2 EI Switch A3100 24 v2 EI PoE JD311B HP A3100 8 PoE v2 EI Switch A3100 8 PoE v2 EI JD312B HP A3100 16 PoE v2 EI Switch A3100 16 PoE v2 EI JD313B HP A3100 24 PoE v2 EI Switch A3100 24 PoE v2 EI Panel views A3100 24 v2 SI A3100 24 v2 EI Front panel Figure 1 A3100 24 v2 SI A3100 24 v2 EI front panel 1 2 3 4 5 6 7 8 1 Speed LED for a 10 100Base TX Ethernet port 2 10 100Base TX Ethernet p...

Page 6: ...ed LED for a 10 100Base TX Ethernet port 2 10 100Base TX Ethernet ports 3 Speed LED for a combo interface 4 Console port 5 Combo interface 10 100 1000Base T Ethernet port on the left 100 1000Base X SFP port on the right 6 Link Act LED for a combo interface 7 Link Act LED for a 10 100Base TX Ethernet port 8 Power LED Rear panel Figure 4 A3100 16 v2 SI A3100 16 v2 EI rear panel 1 2 1 Grounding screw...

Page 7: ...X SFP port on the right 6 Link Act LED for a combo interface 7 Link Act LED for a 10 100Base TX Ethernet port 8 Power LED Rear panel Figure 6 A3100 8 v2 SI A3100 8 v2 EI rear panel 1 2 1 Grounding screw 2 AC input power receptacle A3100 24 PoE v2 EI Front panel Figure 7 A3100 24 PoE v2 EI front panel 1 2 3 4 5 6 7 8 9 10 1 10 100Base TX Ethernet port 2 10 100Base TX Ethernet port LEDs left yellow ...

Page 8: ...l block 3 Grounding screw A3100 16 PoE v2 EI Front panel Figure 9 A3100 16 PoE v2 EI front panel 1 2 3 4 5 6 7 8 9 10 1 10 100Base TX Ethernet port 2 10 100Base TX Ethernet port LEDs left yellow right green 3 Combo interface 10 100 1000Base T Ethernet port on the left 100 1000Base X SFP port on the right 4 LINK LED for a combo interface 5 Console port 6 Port LED mode switching Mode button 7 Power ...

Page 9: ...et port 2 10 100Base TX Ethernet port LEDs left yellow right green 3 Combo interface 10 100 1000Base T Ethernet port on the left 100 1000Base X SFP port on the right 4 LINK LED for a combo interface 5 Console port 6 Port LED mode switching Mode button 7 Power PWR LED 8 Port mode A L LED 9 Port mode D S LED 10 ACT LED for a combo interface Rear panel Figure 12 A3100 8 PoE v2 EI rear panel 后面板 1 2 1...

Page 10: ...e panel The A3100 8 PoE v2 EI switch has one security lock slot on the right side panel to prevent theft You must purchase a cable lock separately Figure 13 A3100 8 PoE v2 EI left side panel 1 1 Security lock slot ...

Page 11: ...witch is operating or when the switch is just powered off Examining the installation site The A3100 v2 Switch Series must be used indoors To ensure normal operation and long service life of your switch install it in an environment that meets the requirements described in the following subsections Electricity safety Clear the work area of possible hazards such as ungrounded power extension cables m...

Page 12: ...hurt your eyes Temperature humidity Maintain appropriate temperature and humidity in the equipment room Lasting high relative humidity can cause poor insulation electricity creepage mechanical property change of materials and metal corrosion Lasting low relative humidity can cause washer contraction and ESD and bring problems including loose captive screws and circuit failure High temperature can ...

Page 13: ... Dust diameter 5 µm The equipment room must also meet strict limits on salts acids and sulfides to eliminate corrosion and premature aging of components as shown in Table 5 Table 5 Harmful gas limits in the equipment room Gas Max mg m3 SO2 0 2 H2S 0 006 NH3 0 05 Cl2 0 01 EMI All electromagnetic interference EMI sources from outside or inside of the switch and application system adversely affect th...

Page 14: ...from the left to the right of the chassis for heat dissipation See Figure 15 Figure 15 Airflow through a PoE switch 1 2 1 Air intake 2 Air exhaust For adequate heat dissipation plan the installation site according to the airflow of your switch and adhere to the following requirements Leave a clearance of at least 10 cm 3 94 in around the air intake and exhaust vents Consider the heat dissipation o...

Page 15: ...ers diagonal pliers combination pliers wire stripping pliers crimping pliers RJ 45 crimping pliers Auxiliary tools ESD preventive wrist strap hair brush tweezers paper knife hand bellows electric iron solder wire ladder cable stripper vacuum cleaner crowbar rubber hammer and blower Tools for fiber optic cleaning Lint free paper and optical fiber microscope Equipment Multimeter 500 V Megohmmeter fo...

Page 16: ...cord Verify the installation Power on the switch Operating properly Power off the switch Troubleshoot the switch No Yes End Installing the switch Selecting an installation method The A3100 v2 Switch Series supports multiple installation methods You can select one as needed Table 7 A3100 v2 Switch Series installation methods Switch model Installation methods Installation accessories A3100 24 v2 SI ...

Page 17: ...kbench Rubber pad See Figure 19 supplied with the switch A3100 24 PoE v2 EI Installing the switch into the 19 inch rack Rack mounting by using front and rear mounting brackets Front mounting bracket See callout A in Figure 17 supplied with the switch Rear mounting bracket See Figure 18 supplied with the switch Mounting the switch on a workbench Rubber pad See Figure 19 supplied with the switch A31...

Page 18: ...ng the front mounting bracket to the rack 2 Screw hole for fixing the front mounting bracket to the switch 3 M4 screws for fixing the front mounting bracket to the switch Figure 18 Rear mounting bracket 1 2 1 Screw hole for M6 screw for fixing the rear mounting bracket to the rack 2 Load bearing screw installed to the switch ...

Page 19: ...e information see Rack mounting by using front and rear mounting brackets or use front mounting brackets and a rack shelf if there is a rack shelf on the rack put the switch on the rack shelf move the switch to an appropriate position and fix the switch by using front mounting brackets Rack mounting by using front mounting brackets NOTE The installation procedures for front mounting brackets with ...

Page 20: ... to install the mounting brackets to the rack posts with the M6 screws See Figure 21 Figure 21 Mount the switch to the rack by using front mounting brackets 1 2 3 1 1 Front rack posts 2 Chassis front panel 3 Front mounting bracket Rack mounting by using front and rear mounting brackets To mount the switch to the rack by using front and rear mounting brackets 1 Wear an ESD preventive wrist strap an...

Page 21: ...sitions select one as needed 3 Chassis front panel 4 Front mounting bracket 5 Screw packaged with the front mounting bracket for fixing the front mounting bracket to the switch NOTE The switch provides three positions on both sides to mount a load bearing screw Select a proper position according to the actual requirements The rear mounting brackets support the switch by the load bearing screws 5 D...

Page 22: ...of the rear mounting bracket faces upwards to ensure that the mounting bracket can make close contact with the load bearing screws 7 Supporting the switch bottom with one hand use the other hand to push the switch into the rack until the load bearing screws on the switch make close contact with the upper edge of the rear mounting bracket See Figure 24 ...

Page 23: ... Chassis rear panel 2 Rear rack post 3 Load bearing screw 4 Rear mounting bracket 8 Have another person to fix the front mounting brackets to the front rack posts by using the M6 screws making sure that the front and rear mounting brackets can fix the switch steadily into the rack See Figure 25 ...

Page 24: ...y and well grounded 2 Place the switch with bottom up and clean the round holes in the chassis bottom with dry cloth 3 Attach the rubber feet to the four round holes in the chassis bottom 4 Place the switch with upside up on the workbench IMPORTANT Ensure good ventilation and 10 cm 3 94 in of clearance around the chassis for heat dissipation Avoid placing heavy objects on the switch Non PoE switch...

Page 25: ...ing strip Grounding the switch with a grounding conductor buried in the earth ground Grounding the switch by using the AC power cord Grounding cable The A3100 v2 Switch Series is provided with a yellow green grounding cable One end of the cable has an OT terminal and the other end is naked and soldered See Figure 26 Figure 26 Grounding cable 1 1 OT terminal of the grounding cable Grounding the swi...

Page 26: ... follow callout A in Figure 28 to make the connector Peel 5 mm 0 20 in of insulation sheath by using a wire stripper and insert the bare metal part through the black insulation covering into the end of the OT terminal Secure the metal part of the cable to the OT terminal with a crimper cover the joint with the insulation covering and heat the insulation covering with a blow dryer to completely cov...

Page 27: ... or steel tube into the earth ground to serve as a grounding conductor The dimensions of the angle iron must be at least 50 50 5 mm 1 97 1 97 0 20 in The steel tube must be zinc coated and its wall thickness must be at least 3 5 mm 0 14 in Weld the yellow green grounding cable to the angel iron or steel tube and treat the joint for corrosion protection Figure 30 Ground the switch by burying the gr...

Page 28: ... is not connected to the ground report the problem and reconstruct the grounding system Figure 31 Ground through the PE wire of the AC power cord 1 2 1 Three wire AC power cord 2 Chassis rear panel Connecting the power cord CAUTION Before powering on the switch you must connect the power cord and make sure the switch is well grounded Connecting an AC power cord to the switch To connect the AC powe...

Page 29: ...t room or the HP RPS DC power input Figure 33 DC power receptacle Chassis ground Input voltage range 47 VDC to 57 VDC NULL Reserved To connect the DC power cord 1 Wear an ESD preventive wrist strap and make sure it makes good skin contact and is well grounded 2 Unpack the DC power cord correctly orient the plug at one end of the cable with the power receptacle on the power supply and insert the pl...

Page 30: ...VDC power source 5 Check the power LED PWR on the front panel If the LED is on the power cord is properly connected CAUTION The length of a DC power cord must be shorter than 3 m 9 84 ft Verifying the installation After you complete the installation verify that The grounding cable is securely connected The selected power supply matches that required by the switch The power cords are properly conne...

Page 31: ...e console port to a terminal Connecting the console cable Console cable A console cable is an 8 core shielded cable with a crimped RJ 45 connector at one end for connecting to the console port of the switch and a DB 9 female connector at the other end for connecting to the serial port on the console terminal Figure 36 Console cable Main label 1 8 B side B Pos 9 Pos 1 A side A Connection procedure ...

Page 32: ...nect from the switch Setting terminal parameters To configure and manage the switch you must run a terminal emulator program on the console terminal The following are the required terminal settings Bits per second 9 600 Data bits 8 Parity None Stop bits 1 Flow control None Emulation VT100 To set terminal parameters for example on a Windows XP HyperTerminal 1 Select Start All Programs Accessories C...

Page 33: ... by the HyperTerminal connection 4 Set Bits per second to 9600 Data bits to 8 Parity to None Stop bits to 1 and Flow control to None and click OK Figure 39 Set the serial port parameters 5 Select File Properties in the HyperTerminal window ...

Page 34: ...30 Figure 40 HyperTerminal window 6 On the Settings tab set the emulation to VT100 and click OK Figure 41 Set terminal emulation in Switch Properties dialog box ...

Page 35: ...itch through the console port after powering on the switch no boot information is displayed and you will enter the command line interface CLI The output information varies depending on the software version Starting HP A3100 24 PoE v2 EI Switch BOOTROM Version 109 Copyright c 2010 2011 Hewlett Packard Development Company L P Creation Date Apr 12 2011 11 13 54 CPU Clock Speed 200MHz Memory Size 128M...

Page 36: ...nding username authentication method and user privilege level you can perform login user privilege control and improve switch security The switch supports login through the console port telnet SSH and NMS The following section takes login through telnet for example Login through telnet supports three login authentication methods Table 8 Telnet login authentication methods Authentication method Fea...

Page 37: ...s function configurations Function Description IP addresses Allows you to remotely manage the switch and use the switch in a network Static routing Allows the switch to implement routing VLAN Divides the network into multiple VLANs and improves data security MSTP Avoids loops in a network using dual uplinks to provide redundancy NOTE For more information about login methods and access function con...

Page 38: ... whether the LEDs of the RJ 45 Ethernet port are normal NOTE For more information about twisted pair cables see the chapter Appendix C Ethernet twisted pair cable IMPORTANT After connecting the switch to the network you can use the ping or tracert command to check the interoperability between the switch and the network For more information see HP A3100 v2 Switch Series Command References If the po...

Page 39: ...hes a knob on the top of the module 4 Squeezing both sides of the module gently push the module into the slot until it has firm contact with the slot you can feel that the top and bottom spring tabs catch in the slot See Figure 43 Figure 43 Install an SFP transceiver module CAUTION Do not remove the dust plug on the SFP transceiver module before installing it Remove the fibers if any from the SFP ...

Page 40: ...igure 45 Use the LC optical fiber connector to connect a transceiver module LC plug SFP module IMPORTANT Each SFP port is a member port of a combo interface After connecting the switch to the network through the SFP port you must use the combo enable fiber command to activate the SFP port After connecting the switch to the network you can use the ping or tracert command to check the interoperabili...

Page 41: ... items The power supply is supplying power to the switch The console cable is properly connected The console cable has no problem and the terminal settings are correct Garbled terminal display If terminal display is garbled check that the following settings are configured for the terminal for example HyperTerminal Baud rate 9 600 Data bits 8 Parity none Stop bits 1 Flow control none Emulation VT10...

Page 42: ...onnecting is activated for the combo interface Then use the combo enable copper fiber command in interface view to activate the port and check the LED NOTE Each combo interface has one fiber SFP port and one copper Ethernet port These two ports share one port name and port view and cannot work simultaneously When you activate one port by using the combo enable copper fiber command the other port a...

Page 43: ...face has one 100 1000Base X fiber SFP port and one 10 100 1000Base T auto sensing copper Ethernet port These two ports share one port name and port view and cannot work simultaneously When you activate one port by using the combo enable copper fiber command the other port automatically shuts down Management ports 1 console port Input voltage AC input Rated voltage 100 VAC to 240 VAC 50 or 60 Hz Ma...

Page 44: ...es numbered 25 and 26 16 10 100Base TX auto sensing Ethernet ports 2 combo interfaces numbered 17 and 18 8 10 100Base TX auto sensing Ethernet ports 1 combo interface numbered 9 NOTE Each combo interface has one 100 1000Base X fiber SFP port and one 10 100 1000Base T auto sensing copper Ethernet port These two ports share one port name and port view and cannot work simultaneously When you activate...

Page 45: ... Ethernet ports 2 combo interfaces numbered 25 and 26 16 10 100Base TX auto sensing Ethernet ports 2 combo interfaces numbered 17 and 18 8 10 100Base TX auto sensing Ethernet ports 1 combo interface numbered 9 NOTE Each combo interface has one 100 1000Base X fiber SFP port and one 10 100 1000Base T auto sensing copper Ethernet port These two ports share one port name and port view and cannot work ...

Page 46: ... BTU h 324 1495 BTU h Cooling system Built in fans Built in fans Built in fans Operating temperature 0 C to 45 C 32 F to 113 F Relative humidity noncondensing 10 to 90 Fire resistance compliance UL60950 1 EN60950 1 IEC60950 1 GB4943 Chassis leakage current compliance UL60950 1 EN60950 1 IEC60950 1 GB4943 Table 13 PoE switches fan specifications Item A3100 24 PoE v2 EI A3100 16 PoE v2 EI A3100 8 Po...

Page 47: ...e exceeds 65 C 149 F and re enables the PoE function of all ports when the internal temperature drops under 60 C 140 F The DC power input and the AC power input on the A3100 24 PoE v2 EI switch can simultaneously work in redundancy mode For more information about the RPS power supplies see the corresponding user guide of the RPS ...

Page 48: ...ble 15 10 100Base TX Ethernet port specifications Item Specification Connector type RJ 45 Interface attributes 10 Mbps full half duplex 100 Mbps full half duplex MDI MDI X auto sensing Max transmission distance 100 m 328 08 ft Transmission medium Category 5 twisted pair cable Standards IEEE 802 3i 802 3u Combo interface All A3100 v2 switches offer combo interfaces Each combo interface has one 100 ...

Page 49: ... swappable 100 Mbps or 1000 Mbps SFP transceiver modules in Table 17 or Table 18 in the ports for long distance connections Table 17 Gigabit SFP transceiver module specifications Product code Description Central wavelength nm Fiber diamete r µm Multimode fiber modal bandwidth MHz km Maximum transmission distance JD118B HP X120 1G SFP LC SX Transceiver 850 50 125 500 550 m 1804 46 ft 400 500 m 1640...

Page 50: ...s JD101A HP X115 100M SFP LC BX 10 D Transceiver TX 1550 RX 1310 9 125 15 km 9 32 miles NOTE To guarantee the functionality of the SFP ports always use HP SFP transceiver modules on the A3100 v2 Switch Series The SFP transceiver modules available for this switch series are subject to change over time For the most up to date list of SFP transceiver modules consult your HP sales representative or te...

Page 51: ...cription Link Act Steady green A link is present on the port Flashing green The port is transmitting or receiving data Off No link is present on the port Speed Steady green The port is operating at 100 Mbps Off The port is operating at 10 Mbps or no link is present on the port Combo interface LEDs The combo interface LEDs show the presence of link data transmission status and port rate of a combo ...

Page 52: ...e type of displayed port information Table 24 Port mode LEDs on the PoE switches LED Status Description A L Steady green The 10 100Base TX port LEDs are displaying port active and link status D S Steady green The 10 100Base TX port LEDs are displaying duplex mode and port rate NOTE The A L LED and the D S LED do not light at the same time When the switch is powered on the 10 100Base TX port LEDs d...

Page 53: ...ode or no link is present on the port Green right On The port is operating at 100 Mbps Off The port is operating at 10 Mbps or no link is present on the port Combo interface LEDs The combo interface LEDs show the presence of link data transmission status and port rate of a combo interface Table 26 Combo interface LEDs on the PoE switches LED Status Description LINK Steady green A link is present o...

Page 54: ... and 568B for cable pinouts Standard 568A pin 1 white green stripe pin 2 green solid pin 3 white orange stripe pin 4 blue solid pin 5 white blue stripe pin 6 orange solid pin 7 white brown stripe pin 8 brown solid Standard 568B pin 1 white orange stripe pin 2 orange solid pin 3 white green stripe pin 4 blue solid pin 5 white blue stripe pin 6 green solid pin 7 white brown stripe pin 8 brown solid ...

Page 55: ...aight through and crossover cables based on their pinouts Straight through The pinouts at both ends comply with standard 568B See Figure 47 Crossover The pinouts at one end comply with standard 568B and those at the other end comply with standard 568A See Figure 48 Figure 47 Straight through cable Straight through cable white orange orange white green blue white blue green white brown brown 1 2 3 ...

Page 56: ...uters and PCs or MDIX for switches For the pinouts of RJ 45 Ethernet interfaces see Table 28 and Table 29 Table 28 RJ 45 MDI interface pinouts Pin 10Base T 100Base TX 1000Base T Signal Function Signal Function 1 Tx Send data BIDA Bi directional data cable A 2 Tx Send data BIDA Bi directional data cable A 3 Rx Receive data BIDB Bi directional data cable B 4 Reserved BIDC Bi directional data cable C...

Page 57: ... needed A straight through cable connects devices of different types If an RJ 45 Ethernet interface with MDI MDIX autosensing enabled can automatically negotiate pin roles The S3100V2 RJ 45 Ethernet interfaces support MDI MDIX By default MDI MDIX is enabled on a port Making an Ethernet twisted pair cable To make an Ethernet twisted pair cable 1 Cut the cable to length with the crimping pliers 2 St...

Page 58: ...our switch to the network through twisted pair cables 34 E Ethernet twisted pair cable 50 Examining the installation site 7 G Grounding the switch 21 I Initially configuring the switch 32 Installation tools 1 1 Installing the switch 12 Interface failure 38 L LEDs 46 P Panel views 1 PoE system failure 38 Ports 44 Power supply failure 37 Powering on the switch 31 S Safety recommendations 7 Setting t...

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