Cisco MGX 8950 User manual

CHAPTER
3-1
Cisco MGX 8950 Hardware Installation Guide
Release 3, Part Number 78-14147-02 Rev. A0, November 2002
3
Installing a Cisco MGX 8950
This chapter provides procedures for installing a Cisco MGX 8950 switch in a rack or in a
Cisco-supplied cabinet.
Note Due to the weight of the switch, we recommend that a mechanical lift be used to install the
Cisco MGX 8950 switch in a rack.
Caution Before you begin the installation procedures, read the entire chapter for important information and safety
warnings.
Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Warning This unit is intended for installation in restricted access areas. A restricted access area is where
access can only be gained by service personnel 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 necessary to ensure a safe and
hazard-free installation.
To see translations of the warnings that appear in this publication, refer to the Regulatory Compliance
and Safety Information for the Cisco MGX 8830, MGX 8850 (PXM1E and PXM45), and MGX 8950
Switches document.
Installation Checklist
When you install a Cisco MGX 8950 system, be sure that you follow the installation procedures in the
proper sequence. Table 3-1 is a checklist of the installation steps in the order in which they should occur.
Detailed installation instructions are located in the sections following Table 3-1.

3-2
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 Checklist
The Cisco MGX 8950 switch is shipped in one of two hardware configurations:
•Open rack—Modules and cards are shipped pre-installed in a the Cisco MGX 8950 switch and are
tested according to customer specifications before they are shipped. The system is ready for
installation in a customer-supplied open rack. The optional AC power supply tray, air intake plenum,
upper and lower fan trays, and exhaust plenum are packaged separately and will need to be installed
in the rack.
If you are not using a mechanical lift, you will need to remove the modules and cards from the
Cisco MGX 8950 switch to lessen the weight of the switch prior to installing it in the rack. Follow
the installation procedures in the “Rack Mounted System (without Lift)” column of Table 3-1.
If you are using a lift to mount the Cisco MGX 8950 switch in a rack, you do not need to remove
the modules, cards, and hardware components. Follow the installation procedures in the “Rack
Mounted System (with Lift)” column of Table 3-1.
•Cisco cabinet configuration—All components are shipped pre-installed in a Cisco cabinet. Follow
the installation procedures in the “Cisco Cabinet System” column of Table 3-1.
Note Using a lift to install a 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 protection is required whenever you handle Cisco equipment. Installation and maintenance
personnel should be properly grounded using ground straps to eliminate the risk of ESD damage to the
equipment. Cards are subject to ESD damage whenever they are removed from the switch.
Table 3-1 Installation Checklist—Cisco MGX 8950 System
Check Steps
Rack Mounted System (without
Lift) Rack Mounted System (with Lift) Cisco Cabinet System
Step 1 •Install Stability Plate for
Seismic Anchoring, page 3-6
•Install Stability Plate for
Seismic Anchoring, page 3-6
•Install Stability Plate for
Seismic Anchoring, page 3-6
Step 2 •Ground the Frame Bonding
Ground Connection for a
Cisco-Supplied Rack, page
3-9
•Ground the Frame Bonding
Ground Connection for a
Cisco-Supplied Rack, page
3-9
•Ground the Frame Bonding
Ground Connection for a
Cisco-Supplied Rack, page
3-9
Step 3 •Measure Rack Space, page
3-11
•Measure Rack Space, page
3-11
•Connect the Fan Tray Power
Cables to the Cisco MGX
8950 Switch, page 3-33
Step 4 •Prepare for Rack Installation,
page 3-12
•Prepare for Rack Installation,
page 3-12
•Connect the AC Power Supply
Tray to the Cisco MGX 8950
Switch, page 3-35, as
necessary

3-3
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 Checklist
Step 5 •Install the AC Power Supply
Tray(s), page 3-15, as
necessary
– Remove the AC Power
Supplies from the AC
Power Tray, page 3-16
– Install the AC Power
Tray, page 3-17
– Install the AC Power
Supplies in the Trays,
page 3-18
•Install the AC Power Supply
Tray(s), page 3-15, as
necessary
– Remove the AC Power
Supplies from the AC
Power Tray, page 3-16
– Install the AC Power
Tray, page 3-17
– Install the AC Power
Supplies in the Trays,
page 3-18
•Connect the DC PEM to the
Cisco MGX 8950 Switch,
page 3-39, as necessary
Step 6 •Install the Air Intake Plenum,
page 3-18
•Install the Air Intake Plenum,
page 3-18
•Connect the Back Cards, 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 3-23
– Reinstall the APS
Assembly, page 3-24
– Reinstall the Back Cards,
page 3-27
– Reinstall the Front Cards,
page 3-28
•Install the Cisco MGX 8950
Switch—with a Mechanical
Lift, page 3-29
– Install the Switch in a
19-Inch Rack, page 3-30
– Install the Switch in a
23-Inch Rack, page 3-30
•Connect Power to the Cisco
MGX 8950 Switch, page 3-45
– Connect AC Power to the
Switch, page 3-46
– Connect DC Power to the
Switch, page 3-49
Table 3-1 Installation Checklist—Cisco MGX 8950 System (continued)
Check Steps
Rack Mounted System (without
Lift) Rack Mounted System (with Lift) Cisco Cabinet System

3-4
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 Checklist
Step 9 •Install the Upper Fan Tray,
page 3-31
•Install the Upper Fan Tray,
page 3-31
•Connect the External Clock,
page 3-50 (optional)
– Connect the External
Clock Using an RJ-45
Connection, page 3-51
– Connect the External
Clock Using a Wire-Wrap
Adapter, page 3-51
Step 10 •Install the Exhaust Plenum,
page 3-31
•Install the Exhaust Plenum,
page 3-31
•Connect the Alarms, page
3-53 (optional)
Step 11 •Install the DC PEM(s), page
3-32, as necessary
•Install the DC PEM(s), page
3-32, as necessary
•Connect the MP Connection,
page 3-53 (optional)
Step 12 •Install the Cable Management
Assembly, page 3-33
•Install the Cable Management
Assembly, page 3-33
•Connect the LAN1/2 Ports,
page 3-54 (optional)
Step 13 •Connect the Fan Tray Power
Cables to the Cisco MGX
8950 Switch, page 3-33
•Connect the Fan Tray Power
Cables to the Cisco MGX
8950 Switch, page 3-33
•Verify EMI Compliance, page
3-55
Step 14 •Connect the AC Power 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 Port,
page 3-44
•Connect the Console Port,
page 3-44
Step 18 •Connect Power to the Cisco
MGX 8950 Switch, page 3-45
– Connect AC Power to the
Switch, page 3-46
– Connect DC Power to the
Switch, page 3-49
•Connect Power to the Cisco
MGX 8950 Switch, page 3-45
– Connect AC Power to the
Switch, page 3-46
– Connect DC Power to the
Switch, page 3-49
Step 19 •Connect the External Clock,
page 3-50 (optional)
– Connect the External
Clock Using an RJ-45
Connection, page 3-51
– Connect the External
Clock Using a Wire-Wrap
Adapter, page 3-51
•Connect the External Clock,
page 3-50 (optional)
– Connect the External
Clock Using an RJ-45
Connection, page 3-51
– Connect the External
Clock Using a Wire-Wrap
Adapter, page 3-51
Table 3-1 Installation Checklist—Cisco MGX 8950 System (continued)
Check Steps
Rack Mounted System (without
Lift) Rack Mounted System (with Lift) Cisco Cabinet System

3-5
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
Installation Procedures
Caution Verify that the switch is not receiving power while you are installing the components.
The following sections provide installation procedures for the Cisco MGX 8950 system:
•Install Stability Plate for Seismic Anchoring, page 3-6
•Ground the Frame Bonding Ground Connection for a Cisco-Supplied Rack, page 3-9
•Measure Rack Space, page 3-11
•Prepare for Rack Installation, page 3-12
•Install the AC Power Supply Tray(s), page 3-15
•Install the Air Intake Plenum, page 3-18
•Install the Lower Fan Tray, page 3-19
•Install the Cisco MGX 8950 Switch—Without a Mechanical Lift, page 3-20
•Install the Cisco MGX 8950 Switch—with a Mechanical Lift, page 3-29
•Install the 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 Port, page 3-44
•Connect Power to the Cisco MGX 8950 Switch, page 3-45
•Connect the External Clock, page 3-50
•Connect the Alarms, page 3-53
Step 20 •Connect the Alarms, page
3-53 (optional)
•Connect the Alarms, page
3-53 (optional)
Step 21 •Connect the MP Connection,
page 3-53 (optional)
•Connect the MP Connection,
page 3-53 (optional)
Step 22 •Connect the LAN1/2 Ports,
page 3-54 (optional)
•Connect the LAN1/2 Ports,
page 3-54 (optional)
Step 23 •Verify EMI Compliance, page
3-55
•Verify EMI Compliance, page
3-55
Table 3-1 Installation Checklist—Cisco MGX 8950 System (continued)
Check Steps
Rack Mounted System (without
Lift) Rack Mounted System (with Lift) Cisco Cabinet System

3-6
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
•Connect the MP Connection, page 3-53
•Connect the LAN1/2 Ports, page 3-54
•Verify EMI Compliance, page 3-55
Install Stability Plate for Seismic Anchoring
You can anchor your Cisco-supplied rack or cabinet to the floor with an optional stability plate designed
for seismic anchoring.
Note 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 not push the cabinet at its sides. Instead, grip its front or
back edges.
Complete the following steps to anchor your Cisco cabinet to a stability plate:
Step 1 Drill holes into the floor to install the stability plate. See Figure 3-1 for the dimensions.

3-7
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 3-1 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

3-8
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
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

3-9
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
Ground the Frame Bonding Ground Connection for a Cisco-Supplied Rack
A Cisco-supplied rack has two pairs of grounding studs located at the top and bottom of the rack. The
rack comes with the hardware needed to secure a ground conductor to the grounding studs. The
grounding studs measure 1/4 inch by 20 threads per inch. The grounding studs can accept a two-holed
grounding connector designed to prevent rotation and possible loosening of the connector.
Note If you are installing your switch in a third-party vendor rack or cabinet, 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.
The ground conductor is typically connected to the building earth wiring, usually at a power distribution
board. Complete the following steps to attach a ground conductor to the frame of a Cisco rack:
Step 1 Place the external, toothed star washers onto a stud. Figure 3-3 shows a Cisco cabinet with the frame
bonding connection studs in the upper and lower parts of the cabinet. Only one of the studs is needed to
make the connection. A ground symbol on the Cisco rack indicates the points of attachment.

3-10
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 3-3 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