Table of Contents
System Specifications
This appendix contains information for the hardware that makes up a Cisco MGX 8850 system. The descriptions apply to the enclosure, power systems, cooling system, and cards. The types of information consist of the following:
- Operational ranges, such as bits per second, voltage ranges, and temperature ranges.
- Physical layer characteristics, such as line coding and line framing.
- Standards compliance, supported protocols, and tolerances, such as parts per million (ppm) for clocks and jitter.
- Per card capacities, such as types and sizes of memory, number of ports, and maximum number of connections.
This section describes the physical characteristics and system power requirements for the MGX 8850. Enclosure and electrical characteristics are shown in Table A-1. For a list of the dimensions, weight, and power consumption for each card, see "Physical and Electrical Characteristics for Cards" later in this appendix. For a list of the AC power plugs for domestic and international use, see "Cabling Summary."
Table A-1: Enclosure and Electrical Characteristics
| Items
| Values
|
Card Slot Capacity
| Two double-height slots reserved for PXM45s.
Up to 28 single-height slots or up to 14 double-height slots.
|
Enclosure Size,
AC-powered system
DC-powered system
|
Height: 35 inches (45.5 cm).
Width: 19 inches (45.08 cm) for all enclosure modules.
Depth: 21.5 inches (54.6 cm) (excluding cable management and front door). Racks must have 17.75 inches minimum between mounting rails.
Height: 29.75 inches (71.1 cm).
Width: 19 inches (45.08 cm) for all enclosure modules.
Depth: 21.5 inches (54.6 cm) (excluding cable management and front door). Racks must have 17.75 inches minimum between mounting rails.
|
| Items
| Values
|
Shipping Weight for
Populated Enclosure
| DC: 190 lbs (87 Kgs) with 2 DC PEMs
AC: 230 lbs (104.5 Kgs)
|
Shipping Weight for
Individual Components
| Front and back cards: 6.0 lbs (2.73 Kgs) per card set
Card cage with boards: 160 lbs (72.73 Kgs)
Exhaust plenum: 8 lbs
Fan tray: 9.5 lbs
Inlet plenum: 8 lbs
AC power tray with power supplies: 45 lbs
|
Clearance Requirement for the Enclosure
| Minimum 30 inches front and rear; 12-inch side clearance recommended.
|
Power Input Voltage
| AC system: Normal operating range is 200-240 VAC, 47 to 63 Hz. The maximum voltage range is 180-264 VAC.
DC system: -42 to -56 VDC.
|
Current Requirements,
AC System
| Configuration-dependent: use Network Design Tool for exact requirements. For general planning purposes: 14.4 Amps at a nominal voltage of 200 VAC. At the minimum voltage limit of 180 VAC, the current draw is a maximum of 16 Amps.
|
Current Requirements,
DC System
| Configuration-dependent: use Network Design Tool for exact requirements. For general planning purposes: 43.2 Amps at nominal -48 VDC; 49.4 Amps at -42 VDC maximum.
|
Input AC Power
Connector
| IEC 320-type C19 (20A) input connector. For a list of the AC power plugs for domestic and international use, see "Cabling Summary."
|
DC Input Connections
| Three-position terminal block for 6 AWG wire (10 square millimeters) and #10 screw lugs designed for 6 AWG wire. Note that the customer's wire must be terminated with a terminal lug that accepts #10-32 screws.
|
Operating Environment
| 0-40 degrees Celsius (32-104 degrees Fahrenheit) normal operation (50 degrees Celsius or 122 degrees Fahrenheit up to 72 hours; 20 to 30 degrees Celsius recommended.). Maximum 85% relative humidity.
|
Shock
| Withstands 10 G, 10 ms at 1/2 sine wave.
|
Vibration
| Withstands 1/4 G, 20-500 Hz.
|
Heat Transfer to Environment
| AC-powered: maximum 9560 BTUs.
DC-powered: maximum 8200 BTUs.
|
For quick reference, Table A-2 shows physical dimensions and power consumption for each card. Detailed information for each card appears in the section of this appendix for a specific card.
Table A-2: Physical Characteristics and Power Consumption by Card
| Module
| Back Cards
| Front Card Dimensions (inches)
| Back Card Dimensions (inches)
| Weight (front and back card)
| Power Consumption
|
|---|
MGX-AXSM-1-2488
| MGX-SMFSR-1-2488 MGX-SMFIR-1-2488 MGX-SMFLR-1- 2488 MGX-SMFXLR-1-2488
| 7.25 x 16.25
| 7.00 x 4.50
| 1.74 lbs/
0.76 lbs
| 105 watts
|
MGX-AXSM-16-155
| MGX-MMF-8-155-MT MGX-SMFIR-8-155-LC MGX-SMFLR-8-155-LC
| 7.25 x 16.25
| 7.00 x 4.50
| 1.74 lbs/
0.76 lbs
| 137 watts
|
MGX-AXSM-8-155
| MGX-SMB-4-155
| 7.25 x 16.25
| 7.00 x 4.50
| 1.74 lbs/
0.76 lbs
| 116 watts
|
MGX-AXSM-4-622
| MGX-SMFIR-2-622 MGX-SMFLR-2-622
| 7.25 x 16.25
| 7.00 x 4.50
| 1.74 lbs/
0.76 lbs
| 119 watts
|
MGX-AXSM-16-T3E3
| MGX-SMB-8-T3 MGX-SMB-8-E3
| 7.25 x 16.25
| 7.00 x 4.50
| 1.74 lbs/
0.6 lbs
| 115 watts
|
PXM45
| PXM-UI-S3
PXM-HD
| 15.65 x 15.83
| 7.00 x 4.50
| 4.80 lbs
| 113 watts
|
This section contains general specifications for the Processor Switching Module (PXM45). The information in Table A-3 includes information for the two types of back cards---the PXM-UI-S3 user interface for switch and the uplink card for trunking and CPE access.
Table A-3: PXM45 Specifications
| Category
| Description
|
|---|
Maximum switch fabric throughput
| 45 Gbps
|
Control access
These ports exists on the
PXM-UI-S3 back card
| Control port: RJ45 connector, EIA/TIA 232, DTE mode, asynchronous interface 19,200 baud, 1 start, 1 stop, no parity
Maintenance port: RJ45 connector, EIA/TIA 232, DTE mode, asynchronous interface 9600 baud, 1 start bit, 1 stop bit, no parity bits
LAN port: RJ45 connector, 10-baseT, 802.3 Ethernet
|
Control access
This port exists on the
PXM-HD back card
| Connector: OC-3 SC
|
LEDs on PXM45 front card
LEDs display status, but alarm history is a switch
| Status for the card:
- Green means active
- Red means failed
- Yellow indicates the standby card
LAN activity: flashing green indicates activity
Node alarm:
- Blue indicates a critical alarm
- Red indicates major alarm
- Yellow indicates minor alarm
Node power (note that each AC power supply also has a LED):
- "DC OK A" is green for okay or red for trouble
- "DC OK B" is green for okay or red for trouble
Alarm history: ACO
Port interface (per port):
- Green means active and okay
- Red means active and local alarm
- Yellow means active and remote alarm
- No light means inactive or not provided
|
LEDs on back cards
| Green means active
No light means inactive or not provided
|
Synchronization
These clock sources satisfy Stratum 3 requirements
| 8 KHz clock derived from the following sources:
- Internal 8 KHz clock (+/- 4.6 ppm)
- Service modules or trunk line interfaces
- External BITS clock port
- T1 clock rate 1.544 MHz +/- 50 bps
- E1 clock rate 2.048 MHz +/- 100 bps (can be either sync or data signal)
|
BITS clock interface
| T1 with an RJ45 connector
E1 with an RJ45 connector
|
Processor clock speed and memory specifics
| Clock speed: 250 MHz internal, 100 MHz external
Flash memory: 2 Mbytes
DRAM: 128 Mbytes
Secondary cache: 2 Mbytes
BRAM: 128 Kbytes
Hard disk: 6 Gbytes
|
Alarm indicators (audible and visual)
| Central office-compatible alarm indicators and controls through a DB15 connector
|
Maintenance features
| Internal isolation loopback
External remote loopback
Hot-pluggable
|
Card dimensions
| Front card: 15.65 inches by 16.50 inches (39.75 cm by 42.75 cm)
Back cards: 7 inches by 4.125 inches (18.42 cm by 10.48 cm)
|
Power
| Requires -48 VDC, dissipates 113 W
|
The PXM45 card does the following immediately after it is inserted into the switch:
1. As soon as the PXM45 detects power, all of the front face plate LEDs (except DC-A/DC-B) flash on then off for about 1/3 of a second. This means that the hardware has come up (FPGAs have completely downloaded), and the card is ready to download its software and boot up. If all these LEDs remain on, it means that the hardware is not coming up, and the card will not boot. This only happens if the board is inoperable.
2. ENET LED flashes green if a LAN port cable is attached; otherwise, it stays off.
3. System Status LED flashes red while card boots up. This means it is downloading software and initializing the board.
4. DC-A/DC-B LEDs are green if the corresponding power supply trays are detected.
5. After the software download is complete, the System Status LED flashes yellow momentarily. It then flashes green if it becomes the node's active PXM, or continues to flash yellow if it becomes the standby.
This section contains details for the AXSM cards. For physical characteristics, see Table A-4. For the T3 and E3 characteristics, see Table A-5 and Table A-6, respectively. For ATM interface characteristics, see Table A-7. And for OC3c, OC-12c, and OC-48c interface characteristics, see Table A-8, Table A-9, and Table A-10 respectively.
Table A-4: Physical Characteristics of the AXSM Modules
| Category
| Description
|
LED Indicators Per Card
| Active (green), Standby (yellow), Fail (red)
|
LED Indicators Per Line
| One per line: Active and OK (green), Active and Local Alarm (red)
Active and Remote Alarm (yellow)
|
Maintenance and
Serviceability
| Card-dependent
|
Card Size
| Front card: 7.25" x 16.25" (18.43 cm x 41.28 cm)
Back cards: 7" x 4.5" (17.78 cm x 11.43 cm)
|
Power
| -48VDC, 115W
|
Safety
| EN 60950 2nd edition (including EN 41003) UL 1950 3rd edition
|
Compliance
| Card-dependent
|
ESD
| IEC 1000-4-2
|
Table A-5: T3 Interface Characteristics
| Category
| Description
|
Line Interface
| SMB (75
)
|
Line Rate
| 44.736 Mbps ± 20 bps
|
Synchronization
| C-bit parity
|
Line Code
| Bipolar 3 Zero Substitution (B3ZS) per ANSI T1.404 (T3)
|
Line Framing
| Extended Superframe Format (ESF 24 frame multiframe) per ANSI T1.408
|
Input Jitter Tolerance
| Per ATT TR 540141
|
Output Jitter
| Per BellCore GR-499-CORE
|
Physical Layer Alarms
| LOS, OOF, AIS, RAI
|
Physical Layer
Performance Statistics
| LCV, LES, LSES, CV, ES, SES, SEFS, AISS, UAS
|
Table A-6: E3 Interface Characteristics
| Category
| Description
|
Line Interface Connector
| SMB (75
)
|
Line Rate
| 34.368 Mbps ± 20 ppm
|
Synchronization
| Transmitter can be: loop-timed, receiver, or synchronized to shelf (normal mode)
|
Line Code
| HDB3
|
Line Framing
| G.832
|
Input Jitter Tolerance
| 34.368 Mbps
|
Output Jitter Generation
| 34.368 Mbps
|
Physical Layer Alarms
| LOS, OOF, AIS, RAI
|
Physical Layer Statistics
| LCV, LES, LSES, CV, ES, SES, SEFS, AISS, UAS
|
Table A-7: ATM Interface Characteristics
| Category
| Description
|
Standards
| ATM UNI v3.1, ITU-T G.804, per CCITT I.361
|
Channel Configuration
| 128K per card
|
VPI/VCI Ranges
| VPI: 0-255 for UNI and 0-4096 for NNI
VCI: 0-65,535
|
Traffic Classes
| nrt-VBR, rt-VBR, ABR, UBR, CBR
|
UPC Parameters
| PCR, SCR (VBR), CCDV (CBR)
|
Congestion Control Support
| ForeSight (towards Network for VBR+)
|
ForeSight Parameters
| MIR, PIR, Rate Up, Rate Down, QIR, QIR Timeout, IBS
|
Table A-8: OC-3c Interface Characteristics
| Category
| Description
|
Line Interface Connector
| MTRJ for MMF, LC for SMF
|
Line Rate
| 155.52 Mbps
|
Line Framing
| SONET
|
Input Jitter Tolerance
| Per Telcordia GR-253
|
Output Jitter Generation
| Per Telcordia GR-253
|
Physical Layer Alarms
| Per Telcordia GR-253
|
Physical Layer Statistics
| Per Telcordia GR-253
|
Standards
| Per Telcordia GR-253
|
Channel Configuration
| 128 per card
|
Table A-9: OC-12c Interface Characteristics
| Category
| Description
|
Line Interface Connector
| SC
|
Line Rate
| 622.08 Mbps
|
Line Framing
| SONET
|
Input Jitter Tolerance
| Per Telcordia GR-253
|
Output Jitter Generation
| Per Telcordia GR-253
|
Physical Layer Alarms
| Per Telcordia GR-253
|
Physical Layer Statistics
| Per Telcordia GR-253
|
Standards
| Per Telcordia GR-253
|
Channel Configuration
| 128K per card
|
Table A-10: OC-48c Interface Characteristics
| Category
| Description
|
Line Interface Connector
| SC
|
Line Rate
| 2488.32 Mbps
|
Line Framing
| SONET
|
Input Jitter Tolerance
| Per Telcordia GR-253
|
Output Jitter Generation
| Per Telcordia GR-253
|
Physical Layer Alarms
| Per Telcordia GR-253
|
Physical Layer Statistics
| Per Telcordia GR-253
|
Standards
| Per Telcordia GR-253
|
Channel Configuration
| 128K per card
|
Posted: Mon Jul 31 09:59:08 PDT 2000
Copyright 1989-2000©Cisco Systems Inc.
