Technical Specifications

This appendix includes the following technical specifications for the Cisco MDS 9148S switch:

Switch Specifications

Table 1-1 lists the environmental specifications for the Cisco MDS 9148S switch.

 

Table 1-1 Environmental Specifications for the Cisco MDS 9148S switch

Description
Specification

Temperature, ambient operating

32 to 104°F (0 to 40°C)

Temperature, ambient nonoperating and storage

-40 to 158°F (-40 to 70°C)

Humidity (RH), ambient (noncondensing) operating

10 to 90%

Humidity (RH), ambient (noncondensing) nonoperating and storage

5 to 95%

Altitude, operating

-197 to 6500 ft (-60 to 2000 m)

Noise levels

60 dB

Table 1-2 lists the physical specifications for the Cisco MDS 9148S switch.

 

Table 1-2 Cisco MDS 9148S Switch Specifications

Description
Specification

Cisco MDS 9148S Switch Dimensions

Width = 17.16 inch (43.59 centimeter)

Height = 1.72 inch (4.37 centimeter)

Depth = 16.34 inch (41.50 centimeter)

Rack Unit (RU)

Chassis requires 1 RU (1.75 in. or 4.45 cm)

Weight

19.84 lb (9 kg) (with two fan modules and two power supplies installed)

Power Supply (fixed)

300-W AC for each power supply

Part Number: DS-C48S-300AC

Power cord: Notched C15 socket connector connecting to C16 plug on power supply

100 to 240V AC (10% range)

50 to 60 Hz (nominal)

Airflow

Back to front.

200 linear feet per minute (LFM) through the system and a maximum of 380 LMDM.

Cisco recommends that you maintain a minimum air space of 2.5 in. (6.4 cm) between walls and chassis air vents and a minimum horizontal separation of 6 in. (15.2 cm) between two chassis to prevent overheating.

Power Specifications

This section includes the following information:

General Power Supply Specifications

Table 1-3 lists the specifications for the Cisco MDS 9148S switch AC input power supply.

 

Table 1-3 Cisco MDS 9148S Switch AC Input Power Supply Specifications

AC Input Power Supply
Specification

AC input voltage

Minimum = 90 VAC

Nominal = 100 to 240 VAC

Maximum = 264 VAC

AC input current rating (maximum)

4.7 A at 85 VAC
3.6 A at 110 VAC
1.8 A at 220 VAC

Note For plug current rating, see the “Jumper Power Cord”.

AC input frequency

Nominal = 50 to 60 Hz

Power supply output capacity

300 W

Power supply output voltage

12 V +/- 6% up to 25 A

Output holdup time

20ms when input > 100 VAC

Power Supply Requirements Specifications

Table 1-4 provides a sample calculation of power for the Cisco MDS 9148S switch AC input power supply.

Table 1-4 Power and Heat Dissipation for AC Input Power Supply

Cisco MDS 9148S Switch
AC Power (Volt)
AC Power (Watt)
220
125.08

Typical Case

220

125.08

110

127.72

50C/NV

220

144.8

110

145.87

50C/HV

220

155.3

110

158.48

Worst Case

220

183.11

110

187.66

tip.gif

Tipblank.gif To prevent a loss of input power, ensure that the total maximum load on each circuit supplying the power supply is within the current ratings of the wiring and breakers.


Table 1-5 Power Supply Fuse Information

Part Number
PID
Type
Fuse Rated AMP
I2T
Fuse Melting Time

341-0706-02

DS-C48S-300AC

Time-Lag

6.3 A

144.869

27.7 hrs@8 A, 0.9 s@20 A

Component Power Requirements and Heat Dissipation Specifications

Consider the heat dissipation when sizing the air-conditioning requirements for an installation. The power and heat associated with a Cisco MDS 9148S switch varies based on the following considerations:

  • The environment (temperature) outside the chassis
  • Internal chassis temperature
  • Any hardware component failure in the chassis
  • Average switching traffic levels

 

Table 1-6 Power Requirements and Heat Dissipation for the Cisco MDS 9148S Switch

Module Type /
Product Number
Power Required (watts)
Heat Dissipation (BTU/hr)
Input Current
85 VAC (amps)
110 VAC (amps)
220 VAC (amps)

Cisco MDS 9148S16G Multilayer Fabric Switch

140 maximum

478

1.68

1.28

0.65

Connection Guidelines for AC-Powered Systems

For connecting the Cisco MDS 9148S switch AC power supplies to the site power source, follow these basic guidelines:

  • Each power supply should have its own dedicated branch circuit.
  • For international, circuits should be sized according to local and national codes.
  • The AC power receptacles used to plug in the chassis must be the grounding type. The grounding conductors that connect to the receptacles should connect to protective earth ground at the service equipment.

SFP Transceiver Specifications

The Cisco MDS 9148S switch is compatible with SFP transceivers and cables that have LC connectors. Each transceiver must match the transceiver on the other end of the cable in terms of wavelength, and the cable must not exceed the stipulated cable length for reliable communications.

Cisco SFP transceivers provide the uplink interfaces, laser transmit (TX), and laser receive (RX), and they support 850 to 1610 nm nominal wavelengths, depending upon the transceiver.

Use only Cisco SFP transceivers on the Cisco MDS 9148S switch. Each Cisco SFP transceiver is encoded with model information that enables the switch to verify that the SFP transceiver meets the requirements for the switch. For the list of supported SFP transceivers, see the release notes.

Use only genuine Cisco SFP+ transceivers in Cisco MDS series switches. Each Cisco SFP+ transceiver is encoded with serial number, vendor name, and other parameters that enable Cisco NX-OS to verify that the transceiver meets the requirements of the switch. If discrepancies are found, the SFP+ will be allowed to function, if possible, but will cause a warning syslog message to be generated. Cisco TAC does not support switch ports populated with non-Cisco SFP+ transceivers.

For details of SFP transceivers see the data sheet at the following location:

http://www.cisco.com/en/US/prod/collateral/ps4159/ps6409/ps4358/product_data_sheet09186a00801bc698.html

This section provides the following information:

For information about safety, regulatory, and standards compliance, see the Regulatory Compliance and Safety Information for the Cisco MDS 9000 Family.

Cisco Fibre Channel SFP+ Transceivers

Table 1-7 lists the Fibre Channel SFP+ transceivers available through Cisco Systems for the Cisco MDS 9148S switch.

Table 1-7 Cisco Fibre Channel SFP + Transceivers for the Cisco MDS 9148S Switch

Part Number
Description
Type

DS-SFP-FC16G-SW

Cisco MDS 4/8/16-Gbps Fibre Channel SW SFP+, LC

Short wavelength

DS-SFP-FC16G-LW

Cisco MDS 4/8/16-Gbps Fibre Channel LW SFP+, LC

Long wavelength

DS-SFP-FC8G-SW

Cisco MDS 2/4/8-Gbps Fibre Channel SW SFP+, LC

Short wavelength

DS-SFP-FC8G-LW

Cisco MDS 2/4/8-Gbps Fibre Channel LW SFP+, LC

Long wavelength

DS-SFP-FC8G-ER

Cisco MDS 2/4/8-Gbps Fibre Channel Extended Reach SFP+, LC

Extended Reach

DS-CWDM8Gxxxx

Cisco MDS 2/4/8-Gbps CWDM Long Distance SFP, LC

Long Distance

General Specifications for Cisco Fibre Channel 16 Gbps SFP+ Transceivers

Table 1-8 summarizes cabling specifications for 16 Gbps.

Table 1-8 Cisco 16-Gbps Fibre Channel SFP+ Cabling Specifications

SFP+

Wavelength (nanometers)

Fiber Type

Core Size (microns)

Baud Rate (GBd)

Cable Distance

DS-SFP-FC16G-SW

850

MMF

62.5

50.0

50.0

50.0

62.5

50.0

50.0

50.0

62.5

50.0

50.0

50.

14.025

14.025

14.025

14.025

8.5

8.5

8.5

8.5

4.25

4.25

4.25

4.25

15 m (49 ft) (OM1)

35 m (115 ft) (OM2)

100 m (328 ft) (OM3)

125 m (410 ft) (OM4)

21 m (69 ft) (OM1)

50 m (164 ft) (OM2)

150 m (492 ft) (OM3)

190 m (623 ft) (OM4)

70 m (230 ft) (OM1)

150 m (492 ft) (OM2)

380 m (1247 ft) (OM3)

400 m (1312 ft) (OM4)

DS-SFP-FC16G-LW

1310

SMF

9.0

9.0

9.0

14.025

8.5

4.25

10 km (6.2 mi)

10 km (6.2 mi)

10 km (6.2 mi)

Environmental Conditions and Power Requirements 16 Gbps

Table 1-9 provides the optical parameters for 16 Gbps.

Table 1-9 Optical Parameters for 16 Gbps

SFP+

Average Transmit Power (dBm)

Average Receive Power (dBm)

Fiber Loss Budget (dB)

 

Max

Min

Max

Min

62.5 microns
[OM1])

(50.0 microns [OM2])

(50.0 microns [OM3])

DS-SFP-FC16G-SW

-1.3

7, 8

0

-10.3

2.08 (4 Gbps)

1.68 (8 Gbps)

1.63 (16 Gbps)

2.08 (4 Gbps)

1.68 (8 Gbps)

1.63 (16 Gbps)

2.88 (4 Gbps)

2.04 (8 Gbps)

1.86 (16 Gbps)

DS-SFP-FC16G-LW

2.0

-5.0

2.0

10

7.8 (4 Gbps)

6.4 (8 Gbps)

6.4 (16 Gbps)

Table 1-10 provides information on operating and storage temperature ranges

 

Table 1-10 Operating and Storage Temperature Ranges for 16 Gbps

SFP+

Operating

Storage

 

Max

Min

Max

Min

DS-SFP-FC16G-SW

40°C

0°C

85°C

-40°C

DS-SFP-FC16G-LW

40°C

0°C

85°C

-40°C

General Specifications for Cisco Fibre Channel 8-Gbps SFP+ Transceivers

Table 1-11 summarizes cabling specifications for 8 Gbps.

Table 1-11 Cisco 8-Gbps Fibre Channel SFP+ Cabling Specifications

SFP+

Wavelength (nanometers)

Fiber Type

Core Size (microns)

Baud Rate (GBd)

Cable Distance

DS-SFP-FC8G-SW

850

MMF

62.5

62.5

62.5

50.0 (OM2)

50.0 (OM2)

50.0 (OM2)

50.0 (OM3)

50.0 (OM3)

50.0 (OM3)

50.0 (OM4)

50.0 (OM4)

50.0 (OM4)

2.125

4.250

8.500

2.125

4.250

8.500

2.125

4.250

8.500

2.125

4.250

8.500

150 m (492 ft)

70 m (230 ft)

21 m (69 ft)

300 m (984 ft)

150 m (492 ft)

50 m (164 ft)

500 m (1640 ft)

380 m (1246 ft)

150 m (492 ft)

520 m (1706 ft)

400 m (1312 ft)

190 m (623 ft)

DS-SFP-FC8G-LW

1310

SMF

9.0

9.0

9.0

2.125

4.250

8.500

10 km (6.2 mi)

10 km (6.2 mi)

10 km (6.2 mi)

DS-SFP-FC8G-ER

1550

SMF

9.0

9.0

9.0

2.125

4.250

8.500

40 km (24.85 mi)

40 km (24.85 mi)

40 km (24.85 mi)

Environmental Conditions and Power Requirements for 8 Gbps

Table 1-12 provides the optical parameters for 8 Gbps.

Table 1-12 Optical Parameters for 8 Gbps

SFP+

Average Transmit Power (dBm)

Average Receive Power (dBm)

Fiber Loss Budget (dB)

 

Max

Min

Max

Min

62.5 microns
[OM1])

(50.0 microns [OM2])

(50.0 microns [OM3])

DS-SFP-FC8G-SW

-1.3

-10 (2 Gbps)

-9 (4 Gbps)

-8.2 (8 Gbps)

0

2.10 (2 Gbps)

1.78 (4 Gbps)

1.58 (8 Gbps)

2.08 (4 Gbps)

1.68 (8 Gbps)

1.63 (16 Gbps)

3.31 (2 Gbps)

2.88 (4 Gbps)

2.04 (8 Gbps

DS-SFP-FC8 G-LW

-3 (2 Gbps)

-1 (4 Gbps)

0.5 (8 Gbps)

-11.7 (2 Gbps)

-8.4 (4 Gbps)

-8.4 (8 Gbps

-3 (2 Gbps)

-1 (4 Gbps)

0.5 (8 Gbps)

-7.8 (2 Gbps)

7.8 (4 Gbps)

6.4 (8 Gbps)

DS-SFP-FC8G-ER

4

-4.7

-1

 

10.9

Table 1-13 provides information on operating and storage temperature ranges for 8 Gbps.

 

Table 1-13 Operating and Storage Temperature Ranges for 8 Gbps

SFP+

Operating

Storage

 

Max

Min

Max

Min

DS-SFP-FC16G-SW

40°C

0°C

85°C

-40°C

DS-SFP-FC16G-LW

40°C

0°C

85°C

-40°C

Optical Specifications for Cisco CWDM SFP Transceivers

Table 1-14 provides the optical specifications for CWDM SFP transceivers. CWDM SFP transceivers have an optical link budget of 28 decibels (db).

note.gif

Noteblank.gif The parameters are specified over temperature and at end of life unless otherwise noted.


note.gif

Noteblank.gif When shorter distances of single-mode fiber are used, it might be necessary to insert an inline optical attenuator in the link to avoid overloading the receiver.


Table 1-14 Optical Specifications for Cisco CWDM SFP Transceivers

Parameter
Symbol
Min.
Typical
Max.
Units
Notes

Transmitter central wavelength

λc

(x-4)

(x+1)

(x+7)

nm

Available center wavelengths:
1470, 1490, 1510, 1530, 1550, 1570, 1590, 1610 nm

Wavelength temperature dependence

 

 

0.08

0.1

nm/°C

 

Side-mode suppression ratio

SMSR

30

 

 

dB

 

Transmitter optical output power

Pout

0.0

 

5.0

dBm

Average power coupled into single-mode fiber

Receiver optical input power (BER <10-12 with PRBS 2-7–1)

Pin

-28.0

 

-7.0

dBm

@ 2.12 Gbps, 140°F (60°C) case temp.

Receiver optical input wavelength

λin

1450

 

1620

Nm

 

Transmitter extinction ratio

OMI

9

 

 

dB

 

Dispersion penalty at 60 km

 

 

 

2

dB

 

Dispersion penalty at 100 km

2

db

@ 1.25 Gbps

3

dB

@ 2.12 Gbps