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Cisco MGX 8950 Hardware Installation Guide

Release 3, Part Number 78-14147-02 Rev. A0, November 2002

Chapter 3 Installing a Cisco MGX 8950

Installation Procedures

Figure 3-17 Fan Power Cable

Complete the following steps to connect the fan power cabling:

Step 1

Insert the male connector of the upper fan tray power cable (46-inch) into the connector receptacle
(labeled F1) located at the bottom of the card cage, and push the connector in to seat it.

Step 2

Insert the connector at the other end of the cable into the upper fan tray receptacle as shown in

, and push the connector in to seat it.

Step 3

Tighten the captive screws on the connectors. Do not use a power tool.

Step 4

Insert the male connector of the lower fan tray power cable (12-inch) into the connector receptacle
(labeled F2) located at the bottom of the card cage, and push the connector in to secure it.

Step 5

Insert the connector at the other end of the cable into the lower fan tray receptacle as shown in

, and push the connector in to secure it.

Step 6

Tighten the captive screws on the connector. Do not use a power tool.

43983

To card cage

To fan tray

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Summary of Contents for MGX 8950

Page 1: ...nnel through the use of a special tool lock and key or other means of security and is controlled by the authority responsible for the location Note Before installing and cabling the equipment be aware of standard safety practices and the hazards involved in working with electrical circuitry to prevent accidents See the Safety Requirements section on page 2 1 for cautions and warnings that are nece...

Page 2: ... fully loaded Cisco MGX 8950 switch in a rack greatly simplifies the installation process because the modules and power supplies do not need to be removed Before proceeding with the installation verify that all the ordered parts are present and in good condition Store a record of the parts and serial numbers If any parts are missing or damaged contact your sales representative Caution Proper ESD p...

Page 3: ...ards page 3 43 Step 7 Install the Lower Fan Tray page 3 19 Install the Lower Fan Tray page 3 19 Connect the Console Port page 3 44 Step 8 Install the Cisco MGX 8950 Switch Without a Mechanical Lift page 3 20 Prepare for Installation page 3 20 Remove the Front Cards page 3 20 Remove the Back Cards page 3 22 Remove the Back Cards from an APS Assembly page 3 22 Install the Switch in the Rack page 3 2...

Page 4: ...Supply Tray to the Cisco MGX 8950 Switch page 3 35 as necessary Connect the AC Power Supply Tray to the Cisco MGX 8950 Switch page 3 35 as necessary Step 15 Connect the DC PEM to the Cisco MGX 8950 Switch page 3 39 as necessary Connect the DC PEM to the Cisco MGX 8950 Switch page 3 39 as necessary Step 16 Connect the Back Cards page 3 43 Connect the Back Cards page 3 43 Step 17 Connect the Console...

Page 5: ...Upper Fan Tray page 3 31 Install the Exhaust Plenum page 3 31 Install the DC PEM s page 3 32 Install the Cable Management Assembly page 3 33 Connect the Fan Tray Power Cables to the Cisco MGX 8950 Switch page 3 33 Connect the AC Power Supply Tray to the Cisco MGX 8950 Switch page 3 35 Connect the DC PEM to the Cisco MGX 8950 Switch page 3 39 Connect the Back Cards page 3 43 Connect the Console Por...

Page 6: ...e These instructions are specific to a Cisco supplied cabinet but can be used for anchoring a Cisco supplied rack If you are not installing your system in a Cisco supplied rack or cabinet anchor your third party rack or vendor cabinet according to the third party vendor documentation The slots in the stability plate use up to 5 8 inch anchor bolts Caution When moving a Cisco supplied cabinet do no...

Page 7: ...dures Figure 3 1 Stability Plate Dimensions Step 2 Use four 3 8 x 1 inch anchoring bolts user provided to attach the stability plate to the floor H8380 C L 3 35 in 8 51 cm 6 7 in 17 02 cm 3 35 in 8 51 cm Cabinet outline 9 5 in 24 13 cm 0 663 in 1 68 cm 0 337 in 0 85 cm 11 55 in 29 34 cm 18 0 in 45 72 cm 33 875 in 86 04 cm 34 550 in 87 76 cm 18 0 in 45 72 cm ...

Page 8: ... Cisco MGX 8950 Installation Procedures Step 3 Roll the Cisco cabinet over the stability plate as shown in Figure 3 2 Figure 3 2 Installing a Cisco Cabinet over the Stability Plate Step 4 Use four 3 8 x 1 inch anchoring bolts user provided to secure the cabinet to the stability plate Stability plate 3 8 x 1 in bolts 4 H8381 ...

Page 9: ...ensure that the rack and cabinet are properly grounded Caution The switch ground wire must be the same size as the return conductor so that it can carry the entire battery load See the Wiring a Mixed Ground System with Redundant Supplies section on page C 9 for more information Caution When moving a Cisco supplied cabinet do not push the cabinet at its sides Instead grip its front or back edges Th...

Page 10: ...hapter 3 Installing a Cisco MGX 8950 Installation Procedures Figure 3 3 Frame Bonding Connection in Cisco Supplied Rack Step 2 Place the connector that terminates the grounding conductor closed loop ring or two hole compression fitting onto the studs Frame bonding connection Frame bonding connection H8215 ...

Page 11: ...MGX 8950 switch and its related components calculate the total rack space required to install your system See Table 2 2 on page 2 13 for the Cisco MGX 8950 dimensions and rack units RUs required System components must be installed in the rack in the following sequence beginning at the bottom of the rack see Figure 3 4 1 AC power supply tray with power supply modules optional 2 Second AC power supp...

Page 12: ...as you face the rack must be 17 75 inches or 45 08 cm Some 19 inch racks have only 17 50 inches between rails The width of the components such as the card cage and fan tray is 17 72 inches Each component has flanges that serve as the front mounting brackets in a 19 inch rack For a 23 inch rack Cisco Systems offers special adapter brackets that can be purchased separately 43977 AC DC 1200W AC DC 12...

Page 13: ...ule At approximately midpoint attach brackets to the components and then attach the components to mounting rails For 23 inch racks order the special adapter brackets from Cisco The mounting rail locations shown in Figure 3 5 comply with racks that require mounting on front or middle rear and rear mounting rails Figure 3 5 Mounting Rail Distances Module Rear rail 5 0 in 12 7 cm 10 0 in 25 4 cm 19 8...

Page 14: ...Tip Do not tighten the screws completely maybe half of a turn until all components are mounted to the rack Otherwise the tolerances in the screw mounting holes can go against you and make it impossible to put the screws in a piece of equipment you install later Once all the rack mounted components are in tighten all of the screws Caution Make sure that mounting the equipment does not create a haza...

Page 15: ...the Air Intake Plenum section on page 3 18 Before installing the AC power supply tray s you should remove the power supplies from the trays Removing the AC power supplies makes the AC power tray easier to install For a mid mount installation you must remove the power supplies from the power tray before installing the tray This section contains the following sets of instructions Remove the AC Power...

Page 16: ...r example a table top Step 2 Insert a small flat blade 20 inch wide maximum screwdriver in the access hole at the top of the air intake grille as shown in Figure 3 7 Then rotate the screwdriver in either direction until the latch opens Figure 3 7 Removing an AC Power Supply Step 3 Tilt the air inlet grill down to about a 45 degree angle then lift the grill out and set it aside This action exposes ...

Page 17: ...ips head screwdriver to attach the mid mounting brackets to the AC power supply tray if you are installing the system in a 19 inch Insert each mounting screw from the inside of the AC power supply tray so that the nut is on the outside of the tray Step 3 Position the AC power supply tray which occupies 3 RUs of space at the bottom of the rack Step 4 Use four mounting screws and a Phillips head scr...

Page 18: ...tom of each AC power supply as shown in Figure 3 8 For slots without a power supply the hinged door on the tray should already have a removable blank panel Step 3 Rotate the hinged door and tighten the captive retainer screw in the center of the hinged door using a flat blade screwdriver Step 4 Replace the air intake grille by putting the lower hooks over the hinged panel and then rotating the gri...

Page 19: ... 3 4 for the correct placement of the air intake plenum Install the Lower Fan Tray Complete the following steps to install the lower fan tray Tip If a component requires more than two screws to install it in the rack or cabinet install the two bottom screws first Step 1 Place the lower fan tray on a flat and stable surface for example a table top and use mounting screws and a Phillips head screwdr...

Page 20: ...hout the use of a mechanical lift Prepare for Installation page 3 20 Remove the Front Cards page 3 20 Remove the Back Cards page 3 22 Remove the Back Cards from an APS Assembly page 3 22 Install the Switch in the Rack page 3 23 Reinstall the APS Assembly page 3 24 Reinstall the Back Cards page 3 27 Reinstall the Front Cards page 3 28 Tip If a component requires more than two screws to install it i...

Page 21: ...en the front door on the switch as necessary Step 4 Record the location of all the cards before you remove them Step 5 Insert and press the flat head tip of the 3 in 1 tool into the slot s of the extractor lever s at the top and bottom of the front card until the latch es spring open Figure 3 11 shows the location of the lever slot in relation to the top of the front card Figure 3 11 Front Card Ex...

Page 22: ...ly and to remove the APS connector from the switch Caution An APS assembly consists of two optical AXSM back cards an active card and a standby card which are connected using an APS connector Cisco Part Number MGX 8950 APS CON Caution A rocking motion during connector mating can bend or damage the APS connector pins Step 1 Remove one of the back cards connected to the APS assembly a Use the flat h...

Page 23: ...an trays or the switching modules These handles are not designed to support the weight of the chassis Using them to lift or support the chassis can result in severe damage to the equipment and serious bodily injury Warning Two people are required to lift the chassis Grasp the chassis underneath the lower edge and lift with both hands To prevent injury keep your back straight and lift with your leg...

Page 24: ... Step 2 Have two people position the switch to the desired position in the rack or if spacers are used slide the switch across the spacers and position it in the rack Note Maintain a gap of 060 inches 1 16 inch between units A spacer may be used Step 3 Use the 10 32 truss head screws to secure the switch to the front mounting rails Step 4 Attach the rear mounting brackets to the rack Step 5 Use th...

Page 25: ...ard into the APS connector by pushing firmly with a straight motion until the back card is securely connected Caution A rocking motion during connector mating can bend or damage the APS connector pins Step 3 Repeat Step 1 and Step 2 to install a second back card on the APS connector Figure 3 13 shows two back cards installed in the APS connector Top view APS connector Back card Alignment slot Card...

Page 26: ...h the vertical edge of the back cards as shown in Figure 3 12 and Figure 3 13 or the APS assembly will not slide into the switch properly Step 5 Slide the APS assembly all the way into the slot until it is properly seated in the backplane The faceplates of the back cards are flush with the card cage when the APS assembly is properly seated Step 6 Tighten the captive screws on the back cards with t...

Page 27: ...ne the backplane pins and back card connector to see if they have been bent or damaged Caution Do not use a power screwdriver on captive screws Warning Blank faceplates and cover panels serve three important functions they prevent exposure to hazardous voltages and currents inside the chassis they contain electromagnetic interference EMI that might disrupt other equipment and they direct the flow ...

Page 28: ... the faceplate to secure them into the card cage Double height front cards have an extractor lever at both the top and the bottom of the faceplate Caution If the AXSM 1 2488 or AXSM 1 2488 B front cards are installed with incorrect back cards you may damage the cards Caution To prevent damage to components on the bottom side of a card support the faceplate and keep the card level while sliding it ...

Page 29: ...stalled and tested at the factory Cisco recommends that you install the Cisco MGX 8950 switch using a mechanical lift This switch can be installed easily by a single person if a mechanical lift is used If a mechanical lift is not available the cards and modules must be removed so the switch can be lifted into the rack If you are not installing the Cisco MGX 8950 switch using a mechanical lift go t...

Page 30: ...s and position it in the rack Step 5 Use the 10 32 truss head screws to secure the switch to the mid mounting rails Install the Switch in a 23 Inch Rack Complete the following steps to install the Cisco MGX 8950 in a 23 inch rack Note The components from a 23 inch mounting kit are used to install the switch in a 23 inch rack For more information about the mounting kits see the Rack Mounting sectio...

Page 31: ...e air flow direction arrow on the back of the upper fan tray is pointing up as shown in Figure 3 14 Figure 3 14 Fan Tray Step 4 Use four mounting screws and a Phillips head screwdriver to bolt the upper fan tray in the rack See Figure 3 4 for the correct placement of the upper fan tray Verify that the base at the back aligns with the top rear edge of the card cage Install the Exhaust Plenum Comple...

Page 32: ...r line circuit breakers and remove the DC power line fuses Warning Before working on a system that has an On Off switch turn OFF the power and unplug the power cord Warning Never install an AC power module and a DC power module in the same chassis Warning Before working on a chassis or working near power supplies unplug the power cord on AC units disconnect the power at the circuit breaker on DC u...

Page 33: ...10 32 screws and the appropriate screwdriver to install the cable managers to the mounting brackets The cable guides on the upper cable manager must be on the bottom The cable guides on the lower cable manager must be on the top See Figure 3 16 Figure 3 16 Cable Management Assembly at the Back of the System Connect the Fan Tray Power Cables to the Cisco MGX 8950 Switch The fan trays receive power ...

Page 34: ...connector at the other end of the cable into the upper fan tray receptacle as shown in Figure 3 18 and push the connector in to seat it Step 3 Tighten the captive screws on the connectors Do not use a power tool Step 4 Insert the male connector of the lower fan tray power cable 12 inch into the connector receptacle labeled F2 located at the bottom of the card cage and push the connector in to secu...

Page 35: ...rries 48 VDC current from an AC power tray to the rear of the card cage see Figure 3 21 One end of the cable plugs into the card cage in the switch and the other end of the cable plugs into the AC power supply If you are using AC power complete the following steps to connect the AC power supply tray to the Cisco MGX 8950 switch If you are using DC power proceed to the Connect DC Power to the Switc...

Page 36: ... Cisco Systems part number 72 2421 XX Cisco Systems part number 72 2422 XX Cisco Systems part number 72 2423 XX See Table 3 2 and Figure 3 20 for assistance with connecting the AC power tray connectors to the card cage and power trays Note Cisco highly recommends that you install and use a redundant AC power supply Perform the following procedure to install the interconnect connections for an AC P...

Page 37: ...ector in to seat it Step 8 Tighten the captive screws firmly by hand Step 9 Insert the other end of the cable labeled PS Tray 2 J1 into the secondary bottom AC power tray receptacle labeled J1 Step 10 Tighten the captive screws firmly by hand Step 11 Insert the connector labeled Card Cage B2 into the card cage receptacle labeled PSB 2 Push the connector in to seat it Step 12 Tighten the captive sc...

Page 38: ...ure 3 20 shows the AC Interconnect Cable Connections for Power Supply A PSA in Tray 1 and Power Supply B PSB in Tray 2 Figure 3 20 AC Interconnect Cable Connections for Primary and Secondary Power Supplies 43985 PSA1 black PSB1 black PSB2 white PSA AC power tray 1 AC J1 J2 J1 J2 PSB AC power tray 2 PSA2 white AC MGX 8950 MGX 8950 pwr distribution 1 pwr distribution 2 ...

Page 39: ...nect the DC PEM to the Cisco MGX 8950 Switch A system power cable carries 48 VDC current from a DC PEM to the backplane see Figure 3 23 Caution The DC power interconnect cables from each PEM must be connected to the backplane If the cables are not connected the power supply monitoring circuit will mistake this as voltage failure and will result in a tripped circuit breaker AC IN AC IN DC OUT AC IN...

Page 40: ...r tray connectors to the card cage Note Cisco highly recommends that you install and use a redundant DC power supply Perform the following procedure to install the interconnect connections for an DC Powered Cisco MGX 8950 switch with a redundant DC power supply Caution Do NOT use power tools for this procedure Step 1 Insert the connector labeled Card Cage A1 into the card cage receptacle labeled P...

Page 41: ...e labeled PEM 2 J1 into the secondary top PEM receptacle labeled J1 Step 8 Tighten the captive screws firmly by hand Step 9 Insert the connector labeled Card Cage B2 into the card cage receptacle labeled PSB 2 Push the connector in to seat it Step 10 Tighten the captive screws firmly by hand Step 11 Insert the other end of the cable labeled PEM 2 J2 into the secondary top PEM receptacle labeled J2...

Page 42: ...0 Installation Procedures Figure 3 23 shows the Interconnect Cable Connections for Power Supply A PSA in DC PEM Assembly ASM 2 and Power Supply B PSB in DC PEM Assembly ASM 1 Figure 3 23 DC Interconnect Cable Connections Detailed 43984 PSA1 black PSB1 black PSB2 white MGX 8950 J2 PSA DC PEM ASM 2 PSA2 white DC J1 J1 J2 PSB DC PEM ASM 1 DC ...

Page 43: ...s from the back cards to the appropriate end device See Appendix B Cabling Summary for cabling specifications and pinouts Once you have connected your back cards route the cables through the cable management assembly The upper card set cables run to the upper cable management panel and the lower card set cables run to the bottom cable management panel Figure 3 25 shows cables routed through the up...

Page 44: ...ts up for the first time the only CLI access available is through the console port CP Connect a VT 100 compatible terminal to the CP on the PXM UI S3 Connect the terminal to a power source and set it up using the values that are shown in Table 3 4 Figure 3 26 shows the hardware required for a CP connection Figure 3 26 Workstation Connection to the Console Port 31004 Copper or fiber cabling Copper ...

Page 45: ...ide for your switch and your release Connect Power to the Cisco MGX 8950 Switch The section provides the following installation procedures to connect the power Connect AC Power to the Switch page 3 46 Connect DC Power to the Switch page 3 49 Warning Never install an AC power module and a DC power module in the same chassis Table 3 4 Terminal Settings Setting Value Baud rate 9600 bps Character size...

Page 46: ...AC power to the Cisco MGX 8950 switch use AC power cords with the following types of AC wall plugs 30A NEMA L620 3 prong plug North America shown in Figure 3 28 Figure 3 28 AC Power Cable North America 30A IEC 309 plug Europe Australia New Zealand shown in Figure 3 29 Figure 3 29 AC Power Cable IEC 309 Plug International Complete the following steps to connect a North American AC power cord to the...

Page 47: ...the black strain relief clamp and then slide the metal housing over the plug Step 4 Insert the metal tabs located on both sides of the housing into the slots found on either side of housing into receptacle and then push down on the housing to secure it Step 5 Tighten the thumbscrew at the top of the housing by hand Step 6 Tighten the nut on the strain relief to secure the cable to the housing Step...

Page 48: ...02 Rev A0 November 2002 Chapter 3 Installing a Cisco MGX 8950 Installation Procedures Figure 3 31 shows the AC power connections from the back of the switch Figure 3 31 AC Power Connections with redundant power supply AC IN AC IN DC OUT AC IN AC IN DC OUT 49771 To outlet To outlet ...

Page 49: ...32 for location Figure 3 32 DC PEM Step 3 Measure enough wire 6 AWG 10 square mm or larger three wire solid or stranded copper wire with insulation rating for 140 F 60 C to connect the DC PEM terminal block to the power source Note Cisco recommends using the Panduit LC AS6 10 L Step 4 Cut the ends of the wire so that the ends are straight not slanted Step 5 Measure 1 4 inch 6 mm up from one end of...

Page 50: ...to attach the plastic cover over the terminal block on the DC PEM Step 14 Turn on the power source and turn the DC PEM power switch on Step 15 Verify that the fans are running by listening or feeling for air movement The following LEDs should be lit AC and DC LEDs on each power supply should be green DC OK LED on each DC PEM should be green Status LED on the PXM45 should be green Standby LED on ea...

Page 51: ...ing steps to connect the external clock Tip Cisco recommends that you label each data cable at both ends to identify its destination Step 1 Verify that you have a PXM UI S3 back card installed in slots 7 and 8 in the upper rear bay of the switch Step 2 Connect the cable connector to the EXT CLK 1 port on the user interface back card Note See Appendix B Cabling Summary for cable requirements Step 3...

Page 52: ...pter Step 2 Insert the shielded clock source cable through the hole of the pin cover See Figure 3 36 Note A shielded clock source cable must be used to ensure EMI containment Figure 3 36 Inserting the Cable through the Pin Cover Note The length of the exposed unshielded wires should be 2 to 4 inches The maximum length must not exceed 4 inches Step 3 Use a wire wrapping tool to wrap the shield drai...

Page 53: ...rms to an alarm system Separate visual and audible alarm outputs are available for critical major and minor alarm outputs and the outputs are provided through the use of a DB15 connector on the PXM user interface back card PXM UI S3 Complete the following steps to connect the external clock Step 1 Verify that you have a PXM UI S3 back card installed in slots 7 and 8 in the upper rear bay of the sw...

Page 54: ...priate software configuration guide for your switch and your release Connect the LAN1 2 Ports Note This step is optional A local LAN connection extends switch management to all workstations that have connectivity to the LAN to which the switch is connected Connect the LAN 1 port on the PXM UI S3 to a hub or router This hub or router is connected to a workstation as shown in Figure 3 39 44373 PXM U...

Page 55: ...the appropriate software configuration guide for your switch and your release Verify EMI Compliance For the switch to be EMI compliant either the optional front door must be installed on the switch or blank faceplates must be installed to cover any empty slots At this time verify that your switch either has a front door installed and closed or that each empty slot has a bank faceplate installed to...

Page 56: ...3 56 Cisco MGX 8950 Hardware Installation Guide Release 3 Part Number 78 14147 02 Rev A0 November 2002 Chapter 3 Installing a Cisco MGX 8950 Installation Procedures ...

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