Contents

1 Appendix A Chassis views and technical specifications· 1-1

Chassis views· 1-1

Weights and dimensions· 1-2

Module power consumption and system power consumption· 1-3

Module power consumption· 1-3

Fan tray power consumption· 1-3

System power consumption· 1-3

Heat dissipation· 1-4

Environmental specifications· 1-4

 

1 Appendix A Chassis views and technical specifications

Unless otherwise stated, supervisor engine units (SEUs, also called MPUs) and interface modules are collectively referred to as "modules" in this document.

Chassis views

The device has an SEU section, interface module section, power supply section, and fan tray section.

Figure1-1 Front and rear views

(1) SEU section	(2) Interface module section
(3) Power supply section	(4) Fan tray section

 

Table1-1 Description for the device sections

Section	Slots	Description
SEU section (The SEU slot number and SEU module identifier are highlighted in pink.)	2 (slots 0 and 1)	You can install one SEU, or two SEUs for redundancy for the device. To install one SEU for the device, you can install it in either of the SEU slots.
Interface module section (The interface module edges and ejector levers and the ejector lever pillow blocks have purple marks.)	2 (slots 2 and 3)	You can install one or two interface modules for the device as needed. To install one interface module for the device, you can install it in either of the interface module slots.
Power supply section	4 (slots PWR 1 to PWR 4)	The device has four power supply slots, with two on each side of the chassis rear. The device supports N+N and N+1 power redundancy.
Fan tray section	2 (slots FAN 1 and FAN 2)	As a best practice, install two fan trays for the device to achieve 1+1 redundancy.

 

No SEUs, interface modules, fan trays, or power supplies are provided with the device. Order them as required. For the SEUs, interface modules, fan trays, and power supplies available for the device, see "Appendix B Removable components and compatibility matrixes."

Weights and dimensions

The device uses modular design. Its weight includes the chassis (mounting brackets and filler panels included) and its removable components.

Table1-2 Chassis weights and dimensions

Model	Weight	Height	Width	Depth
S12500R-2L	< 60 kg (132.28 lb)	133 mm (5.24 in)/3 RU	440 mm (17.32 in)	895 mm (35.24 in)

 

	NOTE: ·     Rack height is measured in RUs. One RU is 44.45 mm (1.75 in). ·     Table1-2 lists dimensions for the device, excluding the mounting brackets, cable management brackets, modules, and power supplies.

 

Table1-3 Module weights and dimensions

Model	Weight	Height	Width	Depth
LSXM1SUP02LR1	2.07 kg (4.56 lb)	22.5 mm (0.89 in)	193.0 mm (7.60 in)	364.3 mm (14.34 in)
LSXM1CGQ48KBR1	9.25 kg (20.39 lb)	50.0 mm (1.97 in)	432.6 mm (17.03 in)	519.8 mm (20.46 in)

 

	NOTE: Module dimensions are typically expressed in H × W × D format: ·     Height—Height of the front panel of the module. ·     Width—Width of the front panel of the module. ·     Depth—Depth from the front panel of the module to the connector (Including the connector, but excluding the ejector levers and captive screws).

 

Table1-4 Power supply weights and dimensions

Model	Weight	Height	Width	Depth
PSR1800-56A	1.6 kg (3.52 lb)	41.0 mm (1.61 in)	82.6 mm (3.25 in)	297.7 mm (11.72 in)
PSR1800-56D	2.0 kg (4.40 lb)	41.0 mm (1.61 in)	82.6 mm (3.25 in)	297.7 mm (11.72 in)

 

Table1-5 Fan tray weights and dimensions

Model	Weight	Height	Width	Depth
FAN-120-1-A	1.6 kg (3.52 lb)	123.0 mm (4.84 in)	214.0 mm (8.43 in)	123.0 mm (4.84 in)

 

Module power consumption and system power consumption

Module power consumption

The power consumption of the modules depends on the module model and state. Table1-6 shows the power consumption for different module models.

·     The static power consumption of a module refers to the power consumed by the module when the module is running but all ports on the module are down and when no transceiver module is available on the fiber port of the module.

·     The dynamic power consumption of a module refers to the power consumed by the module when all the ports on the module are link up and send broadcasts.

Table1-6 Module power consumption

Model	Minimum static power consumption	Maximum dynamic power consumption
LSXM1SUP02LR1	28 W	35 W
LSXM1CGQ48KBR1	395 W	765 W

 

Fan tray power consumption

The device uses fan trays that can automatically adjust the fan speed based on the device temperature. The power consumed by a fan tray depends on the fan speed.

Table1-7 Fan tray power consumption

Fan tray model	Minimum fan tray power consumption	Maximum fan tray power consumption
FAN-120-1-A	17 W	269 W

 

System power consumption

The system power consumption of the device depends on the type and number of modules and the fan tray power consumption.

·     The minimum system power consumption is the total static power consumption of all modules plus the minimum fan tray power consumption.

·     The maximum system power consumption is the total dynamic power consumption of all modules plus the maximum fan tray power consumption.

For example, for an S12500R-2L device that has two LSXM1SUP02LR1 SEUs, two LSXM1CGQ48KBR1 interface modules, and two FAN-120-1-A fan trays, the minimum system power consumption of the device is 2 × 28 + 2 × 395 + 2 × 17 = 880 W. The maximum system power consumption of the device is 2 × 35 + 2 × 765 + 2 × 269 = 2138 W.

Heat dissipation

Heat dissipation is measured in BTU/h, and 1 W equals 3.4121 BTU/h.

The heat dissipation of a device depends on its power consumption. To calculate heat dissipation of the device, assume 90% power consumption is converted to heat, and the efficiency of the power supply is 90%. Heat dissipation/hour of the device is 0.9 × (total power consumption of the modules plus power consumption of the fan tray)/0.9 × 3.4121.

For the power consumption of the modules and fan trays of the device, see "Module power consumption and system power consumption."

Environmental specifications

Table1-8 Environmental specifications

Description	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 (noncondensing)	5% to 95%	5% to 95%