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Setting up an IRF fabric

You can use HP IRF technology to connect and virtualize HP 5130 EI switches into a large virtual switch

called an "IRF fabric" for flattened network topology, and high availability, scalability, and

manageability.

IRF fabric setup flowchart

Figure 33

IRF fabric setup flowchart

To set up an IRF fabric:

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Содержание 5130-24G-4SFP+ EI

Страница 1: ...HP 5130 EI Switch Series Installation Guide Part number 5998 5492 Document version 5W100 20140615 ...

Страница 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 accompan...

Страница 3: ... power to the switch 18 Connecting the switch to an AC power source 19 Connecting the switch to a 48 VDC power source 20 Connecting the switch to an RPS 20 Verifying the installation 21 Accessing the switch for the first time 22 Setting up the configuration environment 22 Connecting the console cable 22 Setting terminal parameters 23 Powering on the switch 26 Setting up an IRF fabric 27 IRF fabric...

Страница 4: ... 370W EI TAA 39 HP 5130 24G SFP 4SFP EI HP 5130 24G SFP 4SFP EI TAA 40 Technical specifications 40 Appendix B FRUs 44 Appendix C Ports and LEDs 45 Ports 45 Console port 45 10 100 1000Base T Ethernet port 45 100 1000Base X SFP port 45 SFP port 47 Combo interface 48 LEDs 48 System status LED 48 Power module status LED 49 RPS status LED 49 Port mode LED 49 10 100 1000Base T Ethernet port LED 50 100 1...

Страница 5: ... Power supplies JD362A PSR150 A N A JD362A PSR150 A1 N A JD366A PSR150 D1 N A For regulatory identification purposes the HP 5130 24G 4SFP EI HP 5130 24G SFP 4SFP EI HP 5130 48G 4SFP EI HP 5130 24G PoE 4SFP 370W EI and HP 5130 48G PoE 4SFP 370W EI switches are assigned Regulatory Model Numbers RMNs The RMNs for these switches are listed below These RMNs should not be confused with the marketing nam...

Страница 6: ...witch chassis Do not place the switch on an unstable case or desk Ensure good ventilation at the installation site and keep the air inlet and outlet vents of the switch free of obstruction Connect the yellow green protection grounding cable before power on Make sure the power source voltage is as required To avoid electrical shocks do not open the chassis while the switch is operating or when the ...

Страница 7: ... and contact points especially when indoor relative humidity is low In the worst case electrostatic adsorption can cause communication failure Table 1 Dust concentration limit in the equipment room Substance Concentration limit particles m Dust 3 x 104 no visible dust on the tabletop over three days NOTE Dust diameter 5 μm The equipment room must also meet strict limits on salts acids and sulfides...

Страница 8: ... the switch has power The laser light emitted from the optical fiber might hurt your eyes The HP 5130 EI switches are Class 1 laser devices Installation tools Flat blade screwdriver Phillips screwdriver ESD wrist strap All these installation tools are user supplied Installation accessories Table 3 Installation accessories Product code Description Quantity Applicable models 5066 0850 1 U four hole ...

Страница 9: ...ounding cable 1 HP 5130 24G 4SFP EI HP 5130 24G 4SFP EI TAA HP 5130 24G SFP 4SFP EI HP 5130 24G SFP 4SFP EI TAA HP 5130 48G 4SFP EI HP 5130 48G 4SFP EI TAA 5184 6729 Grounding cable 1 HP 5130 24G PoE 4SFP 370W EI HP 5130 24G PoE 4SFP 370W EI TAA HP 5130 48G PoE 4SFP 370W EI HP 5130 48G PoE 4SFP 370W EI TAA N A AC power cord User supplied All 5130 EI switches 5185 9443 DC power cord 1 PSR150 A PSR1...

Страница 10: ...ssis cover intact and if you want to open the chassis contact HP for permission Otherwise HP shall not be liable for any consequence Figure 1 Hardware installation flow Installing the switch in a 19 inch rack Mounting brackets Table 4 describes the mounting brackets provided with the switch ...

Страница 11: ...Figure 3 Figure 2 1U two hole mounting bracket 1 Screw hole for attaching the bracket to the switch 2 Screw hole for attaching the bracket to the rack post Figure 3 1U four hole mounting bracket 1 Screw hole for attaching the bracket to the switch 2 Screw hole for attaching the bracket to the rack post Attaching the mounting brackets to the switch The HP 5130 24G 4SFP EI HP 5130 24G 4SFP EI TAA HP...

Страница 12: ...ith the screw holes at the mounting position Use M4 screws provided with the switch to attach the mounting bracket to the chassis 3 Repeat step 2 to attach the other mounting bracket to the chassis Figure 4 Attaching a two hole mounting bracket to the front mounting position on an HP 5130 24G 4SFP EI HP 5130 24G 4SFP EI TAA switch Figure 5 Attaching a two hole mounting bracket to the rear mounting...

Страница 13: ...people To mount the switch in the rack 1 Wear an ESD wrist strap and make sure it makes good skin contact and is correctly grounded 2 Verify that the mounting brackets have been securely attached to the switch chassis 3 Install cage nuts in the mounting holes in the rack posts 4 One person holds the switch chassis and aligns the mounting brackets with the mounting holes in the rack posts and the o...

Страница 14: ...FP 4SFP EI TAA switch by the mid mounting position Mounting the switch on a workbench IMPORTANT Ensure 10 cm 3 9 in of clearance around the chassis for heat dissipation Do not place heavy objects on the switch If a standard 19 inch rack is not available you can place you switch on a workbench To mount the switch on a workbench 1 Verify that the workbench is sturdy and correctly grounded 2 Place th...

Страница 15: ...nd 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 PE wire of the AC power cord NOTE The power and grounding terminals in this section are for illustration only Grounding the switch ...

Страница 16: ...rew 2 Connect the other end of the grounding cable to the grounding strip a Cut the grounding cable to a length according to the distance between the switch and the grounding strip b Peel 20 mm 0 79 in of insulation sheath by using a wire stripper c Use the needle nose pliers to bend the bare wire d Hook the grounding cable to the post on the grounding strip and use the hex nut to secure the cable...

Страница 17: ...ing the switch by burying the grounding conductor into the earth ground 1 Grounding screw 2 Grounding cable 3 Earth 4 Joint 5 Grounding conductor 6 Chassis rear panel Grounding the switch by using the PE wire of the AC power cord If the installation site has no grounding strips or earth ground ground an AC powered switch through the PE wire of the power cord Make sure the following requirements ar...

Страница 18: ...ller panel in power supply slot 2 You can install one power supply or two power supplies for redundancy For information about power supplies available for the HP 5130 24G SFP 4SFP EI HP 5130 24G SFP 4SFP EI TAA switch see Appendix B FRUs When two power supplies are installed you can hot swap a power supply To avoid device damage and bodily injury follow the procedures in Figure 17 and Figure 18 to...

Страница 19: ...the power supply tilts while inserting the power supply pull out the power supply realign it with the slot and then insert it again 5 Fasten the captive screws on the power supply with a Phillips screwdriver to secure the power supply in the chassis See callout 2 in Figure 19 If the captive screw cannot be tightly fastened examine the installation of the power supply Figure 19 Installing a PSR150 ...

Страница 20: ... RPS1600 JG136A Connecting the switch to an RPS HP 5130 24G PoE 4SFP 370W EI HP 5130 24G PoE 4SFP 370W EI TAA HP 5130 48G PoE 4SFP 370W EI HP 5130 48G PoE 4SFP 370W EI TAA AC power source Connecting the switch to an AC power source HP A RPS1600 Connecting the switch to an RPS The HP 5130 24G SFP 4SFP EI and HP 5130 24G SFP 4SFP EI TAA switches provides two power supply slots The PSR150 A1 PSR150 A...

Страница 21: ... 2 Use the cable tie to secure the AC power cord to the power supply handle Figure 21 Securing the AC power cord for a hot swappable AC power supply Securing the AC power cord for a built in power supply 1 Insert the cable tie through the cable bridge 2 Use the cable tie to secure the AC power cord to the cable bridge Figure 22 Inserting the cable tie through the cable bridge ...

Страница 22: ...le re orient the plug rather than use excessive force to push it in 3 Tighten the screws on the plug with a flat blade screwdriver to secure the plug in the power receptacle See callout 2 in Figure 25 4 Connect the two wires at the other end of the power cord to a 48 VDC power source Identify the positive and negative marks on the two wires to avoid connection mistakes Figure 24 Connecting the DC ...

Страница 23: ...S cord to an HP 5130 48G 4SFP EI switch Verifying the installation After you complete the installation verify that There is enough space for heat dissipation around the switch and the rack or workbench is stable The grounding cable is securely connected The correct power source is used The power cords are correctly connected All the interface cables are cabled indoors If any cable is routed outdoo...

Страница 24: ... 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 27 Console cable To connect a terminal for example a PC to the switch 1 Plug the DB 9 female connector of the console cable to the serial po...

Страница 25: ...ontrol None Emulation VT100 Figure 29 through Figure 33 show the configuration procedure on Windows XP HyperTerminal On Windows Server 2003 you must first add the HyperTerminal program On Windows Server 2008 Windows 7 Windows Vista or another operating system use the third party terminal software For how to use the third party terminal software see the user guide or online help of that software To...

Страница 26: ... 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 30 Setting the serial port parameters 5 Select File Properties in the HyperTerminal window ...

Страница 27: ...25 Figure 31 HyperTerminal window 6 On the Settings tab set the emulation to VT100 and click OK Figure 32 Setting terminal emulation in Switch Properties dialog box ...

Страница 28: ...tings on the switch Power on the switch During the startup process you can access Boot ROM menus to perform tasks such as software upgrade and file management The Boot ROM interface and menu options differ with software versions For more information about Boot ROM menu options see the software matching release notes for the device After the startup completes you can access the CLI to configure the...

Страница 29: ...connect and virtualize HP 5130 EI switches into a large virtual switch called an IRF fabric for flattened network topology and high availability scalability and manageability IRF fabric setup flowchart Figure 33 IRF fabric setup flowchart To set up an IRF fabric ...

Страница 30: ... section describes issues that an IRF fabric setup plan must cover Planning IRF fabric size and the installation site Choose switch models and identify the number of required IRF member switches depending on the user density and upstream bandwidth requirements The switching capacity of an IRF fabric equals the total switching capacities of all member switches An HP 5130 IRF fabric can have a maxim...

Страница 31: ...IRF member switches Each IRF member switch has two IRF ports IRF port 1 and IRF port 2 To use an IRF port you must bind at least one physical port to it When connecting two neighboring IRF member switches you must connect the physical ports of IRF port 1 on one switch to the physical ports of IRF port 2 on the other switch The HP 5130 EI switches can provide 10 GE IRF connections through SFP ports...

Страница 32: ...her choose the SFP transceiver modules with optical fibers If the IRF member switches are all in one equipment room choose SFP cables HP recommends that you use ring topology to connect the switches The following describes cabling schemes in ring topology Connecting the IRF member switches in one rack Use short haul and long haul SFP cables to connect the IRF member switches 9 switches in this exa...

Страница 33: ...mber switches in a ToR solution You can install IRF member switches in different racks side by side to deploy a top of rack ToR solution Figure 39 shows an example for connecting 9 top of rack IRF member switches by using SFP transceiver modules and optical fibers The topology is the same as Figure 38 ...

Страница 34: ... transceiver modules and fibers to connect the IRF member switches as planned Wear an ESD wrist strap when you connect SFP cables or SFP transceiver modules and fibers For how to connect them see SFP SFP XFP Transceiver Modules Installation Guide Verifying the IRF fabric setup To verify the basic functionality of the IRF fabric after you finish configuring basic IRF settings and connecting IRF por...

Страница 35: ...topology information display irf topology NOTE To avoid IP address collision and network problems configure at least one multi active detection MAD mechanism to detect the presence of multiple identical IRF fabrics and handle collisions For more information about MAD detection see HP 5130 EI Switch Series IRF Configuration Guide ...

Страница 36: ...ady green The AC input is normal and the RPS is in position or working normally Steady yellow RPS power input is normal but AC input has failed or AC input is not connected Off No RPS is connected AC input If the system status LED is off an AC input failure has occurred To resolve the problem 1 Verify that the AC power cord is securely connected to the switch and the AC input power receptacle on t...

Страница 37: ...the RPS status LED is steady yellow an AC input failure has occurred To resolve the problem a Verify that the AC power cord is securely connected to the switch and the AC input power receptacle on the switch and the connected AC power outlet are in good condition b Verify that the AC power source is operating correctly c If the problem persists contact HP Support If the system status LED is on but...

Страница 38: ... the following settings are configured for the terminal Baud rate 9600 Data bits 8 Parity None Stop bits 1 Flow control None Emulation VT100 5 Verify that the console cable is not faulty 6 If the problem persists contact HP support Garbled display on the configuration terminal The configuration terminal displays garbled text To resolve the problem 1 Verify that the following settings are configure...

Страница 39: ...30 24G 4SFP EI HP 5130 24G 4SFP EI TAA Figure 39 Front panel 1 10 100 1000Base T auto sensing Ethernet port 2 SFP port 3 Console port 4 10 100 1000Base T Ethernet port LED 5 SFP port LED 6 System status LED SYS Figure 40 Rear panel 1 AC input power receptacle 2 Grounding screw ...

Страница 40: ...00Base T Ethernet port LED 7 SFP port LED 8 System status LED SYS 9 RPS status LED RPS Figure 42 Rear panel 1 AC input power receptacle 2 RPS receptacle 3 Grounding screw HP 5130 48G 4SFP EI HP 5130 48G 4SFP EI TAA Figure 43 Front panel 1 10 100 1000Base T auto sensing Ethernet port 2 10 100 1000Base T Ethernet port LED 3 Console port 4 SFP port LED 5 SFP port 6 System status LED SYS 7 RPS status ...

Страница 41: ...0W EI TAA Figure 45 Front panel 1 10 100 1000Base T auto sensing Ethernet port 2 10 100 1000Base T Ethernet port LED 3 Console port 4 SFP port 5 Port LED mode switching button 6 Port mode LED 7 System status LED SYS 8 RPS status LED RPS 9 SFP port LED Figure 46 Rear panel 1 Grounding screw 2 AC input power receptacle 3 RPS receptacle 1 2 3 ...

Страница 42: ...ler panel in power supply slot 1 and a filler panel in power supply slot 2 You can install one or two power supplies for the switch as needed In Figure 49 two PSR150 A AC power supplies are installed For more information about installing and removing a power supply see Installing and removing a power supply Technical specifications Table 8 Technical specifications for non PoE switch models Item HP...

Страница 43: ... power source Rated voltage 100 VAC to 240 VAC 50 or 60 Hz Max voltage 90 VAC to 264 VAC 47 to 63 Hz DC power source 48 V DC power source in the equipment room or RPS recommended HP RPS models A RPS800 or A RPS1600 Rated voltage 48 VDC to 60 VDC Max voltage 36 VDC to 72VDC Minimum power consumption 19 W AC 38 W DC 38 W AC 30 W DC 38 W Maximum power consumption 26 W AC 45 W DC 50 W AC 60 W DC 68 W ...

Страница 44: ...e 54 VDC to 57 VDC Max voltage 44 VDC to 60 VDC for single DC input and 54 VDC to 57 VDC for AC DC dual inputs Maximum PoE per port 30 W 30 W Total PoE AC 370 W DC 740 W AC 370 W DC 800 W Minimum power consumption AC 30 W DC 25 W AC 47 W DC 43 W Maximum power consumption including PoE consumption AC 460 W including 370 W PoE consumption DC 790 W including 740 W PoE consumption AC 490 W including 3...

Страница 45: ...43 Item HP 5130 24G PoE 4SFP 370W EI HP 5130 24G PoE 4SFP 370W EI TAA HP 5130 48G PoE 4SFP 370W EI HP 5130 48G PoE 4SFP 370W EI TAA Fire resistance compliance UL60950 1 EN60950 1 IEC60950 1 GB4943 1 ...

Страница 46: ...5130 24G SFP 4SFP EI TAA switch Power module model Item Specification Remarks PSR150 A1 PSR150 A Rated input voltage 100 VAC to 240 VAC 50 Hz or 60 Hz For more information about the power supplies see HP PSR150 A PSR150 D Power Supplies User Guide Max input voltage 90 VAC to 264 VAC 47 Hz to 63 Hz Max output power 150 W PSR150 D1 Rated input voltage 48 VDC to 60 VDC Max input voltage 36 VDC to 72 ...

Страница 47: ...ort The switch provides 10 100 1000Base T Ethernet ports Table 12 10 100 1000Base T Ethernet port specifications Item Specification Connector type RJ 45 Interface attributes 10 100 1000 Mbps half full duplex MDI MDI X autosensing Max transmission distance 100 m 328 08 ft Transmission medium Category 5 or above twisted pair cable Compatible standards IEEE 802 3i 802 3u 802 3ab 100 1000Base X SFP po...

Страница 48: ...le mode 9 125 15 km 9 32 miles JD101A HP X110 100M SFP LC BX 10 D Transceiver TX 1550nm RX 1310 nm Note JD100A and JD101A must be used in pairs Table 14 1000 Mbps SFP transceiver modules Product code HP description Central wavelength nm Connector Cable fiber diameter μm Modal bandwidth MHz km Max transmission distance JD118B HP X120 1G SFP LC SX Transceiver 850 LC Multi mode 50 125 500 550 m 1804 ...

Страница 49: ...s SFP port The switch provides SFP ports You can install the 1000 Mbps SFP transceiver modules in Table 14 the SFP transceiver modules in Table 15 and the SFP cables in Table 16 in the SFP ports as needed Table 15 SFP transceiver modules available for the SFP ports Product Code HP description Central wavelength nm Connector Fiber diameter μm Modal bandwidth MHz km Max transmission distance JD092B ...

Страница 50: ... about the 1000 Mbps SFP transceiver modules SFP transceiver modules and SFP cables see HP Comware Based Switches Transceiver Modules User Guide Figure 49 SFP cable 1 Connector 2 Pull latch Combo interface The HP 5130 24G SFP 4SFP EI HP 5130 24G SFP 4SFP EI TAA switch provides eight combo interfaces A combo interface includes an SFP port and a 10 100 1000Base T auto sensing Ethernet port Only one ...

Страница 51: ...s LED The HP 5130 24G PoE 4SFP 370W EI HP 5130 24G PoE 4SFP 370W EI TAA HP 5130 48G 4SFP EI HP 5130 48G 4SFP EI TAA HP 5130 48G PoE 4SFP 370W EI and HP 5130 48G PoE 4SFP 370W EI TAA switches support RPS input and provide an RPS status LED on the front panel to indicate the RPS operating status Table 19 RPS status LED description LED mark Status Description RPS Steady green Both the RPS DC input an...

Страница 52: ... EI HP 5130 48G 4SFP EI TAA HP 5130 24G SFP 4SF P EI HP 5130 24G SFP 4SF P EI TAA N A Steady green The port is operating at 1000 Mbps and a link is present on the port Flashing green The port is sending or receiving data at 1000 Mbps Steady yellow The port is operating at 10 100 Mbps and a link is present on the port Flashing yellow not 3 Hz The port is sending or receiving data at 10 100 Mbps Fla...

Страница 53: ...0 1000Base T Ethernet port LED description for HP 5130 24G 4SFP EI HP 5130 24G 4SFP EI TAA and HP 5130 24G PoE 4SFP 370W EI HP 5130 24G PoE 4SFP 370W EI TAA switches Switch model Port mode LED Mode status LED Status Description HP 5130 24G 4SFP EI HP 5130 24G 4SFP EI TAA N A Green LED Steady on The port is operating at 1000 Mbps and a link is present on the port Flashing The port is sending or rec...

Страница 54: ... supplying PoE correctly Flashing 3 Hz The PD power requirement exceeds the port PoE capacity The port fails to meet the power requirement of the PD because of power insufficiency of the switch Off The port is not supplying PoE power Yellow LED Steady on A non PD device is attached to the port or the port is experiencing a PoE failure Flashing 3 Hz POST has failed on the port Off The port is not s...

Страница 55: ...0 Gbps Off No transceiver module is installed in the port or no 10 Gbps link is present on the port The port mode LED is operating in PoE mode applicable to the PoE switch models Yellow LED Steady on A transceiver module is installed in the port The port is operating at 1 Gbps and a link is present on the port Flashing not 3 Hz The port is sending or receiving data at 1 Gbps Flashing 3 Hz POST has...

Страница 56: ...e port is operating at 1 Gbps and a link is present on the port Flashing yellow not 3 Hz The port is sending or receiving data at 1 Gbps Flashing yellow 3 Hz POST has failed on the port Off No transceiver module is installed in the port or no link is present on the port The port mode LED is operating in PoE mode applicable to the PoE switch models ...

Страница 57: ...nts in the chassis and built in fans To maintain good ventilation for the switch consider the ventilation design at the installation site when you plan the installation position for the switch Figure 51 Airflow through the chassis 1 Air inlet side 2 Air outlet side 3 Port side 3 1 2 ...

Страница 58: ...ng you will receive email notification of product enhancements new driver versions firmware updates and other product resources Related information Documents To find related documents browse to the Manuals page of the HP Business Support Center website http www hp com support manuals For related documentation navigate to the Networking section and select a networking category For a complete list o...

Страница 59: ...parated by vertical bars from which you select one choice multiple choices or none 1 n The argument or keyword and argument combination before the ampersand sign can be entered 1 to n times A line that starts with a pound sign is comments GUI conventions Convention Description Boldface Window names button names field names and menu items are in bold text For example the New User window appears cli...

Страница 60: ... a unified wired WLAN module or the switching engine on a unified wired WLAN switch Represents an access point Represents a mesh access point Represents omnidirectional signals Represents directional signals Represents a security product such as a firewall UTM multiservice security gateway or load balancing device Represents a security card such as a firewall load balancing NetStream SSL VPN IPS o...

Страница 61: ...unding the switch with grounding conductor buried in the earth ground 15 grounding the switch with grounding strip 13 planning IRF cabling scheme 30 chassis attaching mounting bracket to switch chassis 9 views 37 cleanness installation site 5 combo interface 48 configuring IRF basic settings 32 switch 22 troubleshooting configuration terminal problems 36 verify the IRF fabric setup 32 connecting 4...

Страница 62: ... fabric setup 27 G garbled terminal display troubleshooting 36 gas installation site 5 grounding EMI prevention 5 grounding conductor buried in the earth ground 15 grounding strip 13 switch 13 switch through AC power supply PE wire 15 switch with grounding conductor buried in the earth ground 15 switch with grounding strip 13 H hardware 10 100 1000 Base T Ethernet port LED technical specifications...

Страница 63: ...0 connecting physical ports 32 identifying master switch 28 identifying member switch physical ports 30 planning 28 planning cabling scheme 30 30 planning connections 29 planning installation site 28 planning member IDs 28 planning size 28 planning topology 29 setting up 27 setup flowchart 27 verify the IRF fabric setup 32 L LED 10 100 1000 Base T Ethernet port 50 100 1000Base X SFP port 52 port m...

Страница 64: ... grounding switch with grounding strip 13 grounding the switch 13 identifying IRF master switch 28 identifying IRF member switch physical ports 30 installing power supply 17 installing switch 8 installing switch on 19 inch rack 8 maintaining the switch 34 mounting switch on workbench 12 planning IRF connections 29 planning IRF fabric installation site 28 planning IRF member IDs 28 planning IRF top...

Страница 65: ...identifying IRF member switch physical ports 30 installation 8 LEDs 45 maintaining 34 maintaining the switch 34 planning IRF cabling scheme 30 30 planning IRF member IDs 28 ports 45 powering on 26 rack mounting 1 1 setting configuration environment 22 setting terminal parameters 23 setting up IRF fabric 27 technical specifications 37 troubleshooting 34 troubleshooting the switch 34 verifying 19 in...

Страница 66: ...ure 34 configuration terminal problems 36 garbled terminal display 36 hot swappable power supply failure 35 no terminal display 36 power supply failure 34 switch 34 V verify the IRF fabric setup 32 verifying IRF fabric setup 32 switch installation 19 inch rack 21 VT100 23 W workbench mounting switch 12 ...

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