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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:
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."
| Items | Values |
Card Slot Capacity | Two double-height slots reserved for PXM45s. |
Enclosure Size, DC-powered system | Height: 29.75 inches (71.1 cm). |
| Items | Values |
Shipping Weight for | DC: 190 lbs (87 Kgs) with 2 DC PEMs |
Shipping Weight for | Front and back cards: 6.0 lbs (2.73 Kgs) per card set |
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. |
Current Requirements, | 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, | 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 | IEC 320-type C19 (20A North American, 16 A International) 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), #10 screw lugs designed for 6 AWG wire and panduit (part number LC AS6-10-L). 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. |
AC-powered: maximum 9560 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.
| 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/ | 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/ | 137 watts |
MGX-AXSM-8-155 | n/a | 7.25 x 16.25 | n/a | 1.74 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/ | 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/ | 115 watts |
PXM45 | PXM-UI-S3 | 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.
| Category | Description |
|---|---|
Maximum switch fabric throughput | 45 Gbps |
Control access These ports exists on the | 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 | Connector: OC-3 SC |
LEDs on PXM45 front card LEDs display status, but alarm history is a switch | Status for the card:
LAN activity: flashing green indicates activity Node alarm:
Node power (note that each AC power supply also has a LED):
Alarm history: ACO Port interface (per port):
|
LEDs on back cards | Green means active |
Synchronization These clock sources satisfy Stratum 3 requirements | 8 KHz clock derived from the following sources:
|
BITS clock interface | Clck1 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 |
Card dimensions | Front card: 15.65 inches by 16.50 inches (39.75 cm by 42.75 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.
| 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) |
Maintenance and | Card-dependent |
Card Size | Front card: 7.25" x 16.25" (18.43 cm x 41.28 cm) |
Power | -48VDC, 115W |
Safety | EN 60950 2nd edition (including EN 41003) UL 1950 3rd edition |
Compliance | Card-dependent |
ESD | EN 61000-4-2 |
| Category | Description |
Line Interface | SMB (75 |
Line Rate | 44.736 Mbps ± 4.6 ppm |
Synchronization | Loop-timed, receiver, or synchronized to shelf (in normal mode). |
Line Code | Bipolar 3 Zero Substitution (B3ZS) per ANSI T1.404 (T3) |
Line Framing | C-Bit Parity |
Input Jitter Tolerance | Per ATT TR 540141 |
Output Jitter | Per BellCore GR-499-CORE |
Physical Layer Alarms | LOS, OOF, AIS, RAI |
Physical Layer | LCV, LES, LSES, CV, ES, SES, SEFS, AISS, UAS |
| 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 |
| 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 |
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 |
| 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 |
| 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 |
| 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 Oct 2 12:35:15 PDT 2000
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