MGX 8850 Installation and Configuration, Release 1.1.10
System Specifications
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System Specifications

Table Of Contents

System Specifications

Enclosure and System Power Specifications

Physical and Electrical Characteristics for Cards

Electromagnetic Compatibility and Immunity

Processor Switching Module Specifications

MGX-AUSM/B-8T1E1 Interface Characteristics

MGX-FRSM-2CT3 Specifications

MGX-FRSM-2CT3 Framer

MGX-FRSM-2CT3 Line Alarms

MGX-FRSM T3 and E3 Specifications

MGX-FRSM T3 Line

T3 Framer Level

MGX-FRSM E3 Line

E3 Framer Level

MGX-FRSM T3 and E3 Line Alarms

Statistics and Counter Specifications

MGX-FRSM-HS2 Specifications

Counters and Statistics for FRSM-VHS Cards

MGX-FRSM-8T1 Specification

MGX-FRSM-8E1 Specification

MGX-SRM-3T3/B Specification

Circuit Emulation Service for T3 and E3

Circuit Emulation Service Module for T1 Operation

Circuit Emulation Service Module for E1 Operation


System Specifications


This appendix contains information for the hardware that makes up a Cisco MGX 8850 switch. The descriptions apply to the enclosure, power systems, cooling system, and cards. The types of information consist of:

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

Enclosure and System Power Specifications

This section describes the physical characteristics and system power requirements for the
MGX 8850 switch. For a list of the dimensions, weight, and power consumption for each card, see "Physical and Electrical Characteristics for Cards" in this appendix. For a list of the AC power plugs for domestic and international use, see "."

Table A-1 Enclosure and Electrical Characteristics 

Item
Value

Card Slot Capacity

Supports combinations of full and single-height service modules.
Two double-height slots reserved for PXMs.
Up to 28 single-height slots for service modules or
Up to 14 double-height slots for service modules.

Enclosure Size,
AC-powered system:



DC-powered system:


Height: 33.25 inches (45.5 cm).
Width: 17.75 inches (45.08 cm) for all enclosure modules, so the rack must have this minimal, inner width. If a 19-inch rack cannot provide it, use a 23-inch rack.
Depth: 27.0 inches (68.6 cm).

Height: 28 inches (71.1 cm.).
Width: 17.75 inches (45.08 cm) for all enclosure modules, so the rack must have this minimal, inner width. If a 19-inch rack cannot provide it, use a 23-inch rack.
Depth: 27.0 inches (68.6 cm) with cable manager, 21.5 inches (54.6 cm) without cable manager.

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:

Single-height, front and back cards: 2.48 lbs (1.13 Kgs)
Double-height, front and back cards: 6.0 lbs (2.73 Kgs)

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; nominal 12-inch side clearance.

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.

Each AC supply can provide up to 1200 watts.

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 16-Amp input connector. For a list of the AC power plugs for domestic and international use, see "."

DC Input Connections:

Three-position terminal block for 6 AWG wire (10 square millimeters) and #10 screw lugs designed for 6 AWG wire.

Operating Environment:

0-40 degrees Celsius (32-104 degrees Farenheit) normal operation (50 degrees Celsius or 122 degrees Farenheit up to 72 hours). 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.


Physical and Electrical Characteristics for Cards

For quick reference, 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-FRSM-8T1

MGX-FRSM-8E1

MGX-FRSM-8T1c

MGX-FRSM-8E1c

8 T1, 8 E1

7.25 x 16.25

7.00 x 4.50

1.74 lbs/
0.76 lbs

30 watts

MGX-FRSM-2CT3

2 T3

7.25 x 16.25

7.00 x 4.50

1.74 lbs/
0.76 lbs

60 watts

MGX-FRSM-2T3E3

2 T3, 2 E3

7.25 x 16.25

7.00 x 4.50

1.74 lbs/
0.76 lbs

60 watts

MGX-FRSM-HS2

2 HSSI

7.25 x 16.25

7.00 x 4.50

1.74 lbs/
0.6 lbs

75 watts

MGX-CESM-8T1E1

8 T1, 8 E1

7.25 x 16.25

7.00 x 4.50

1.74 lbs
0.76 lbs

30 watts

MGX-CESM-T3E3

2 T3, 2 E3

7.25 x 16.25

7.00 x 4.50

1.74 lbs/
0.76 lbs

60 watts

MGX-AUSM/B-8T1E1

8-T1, 8-E1

7.25 x 16.25

7.00 x 4.50

1.74 lbs
0.76 lbs

30 watts

RPM

4-Ethernet, 1-FE (RJ45/mmf),
1-FDDI (smf, mmf)

Up to 2 back cards

15.65 x15.9

7.00 x 4.125

4.80 lbs

110 watts

PXM1

2 T3/E3, OC-3c/STM-1, OC12c/STM-4, VI

15.65 x 15.83

7.00 x 4.5

4.80 lbs

100 watts


Electromagnetic Compatibility and Immunity

This section lists the national and international standards for electromagnetic compatibility and immunity to which this Cisco product complies. It consists of a list of reference documents, a table that indicates applicability of the standards, and the test levels for mandatory and non-mandatory CE mark immunity.

The applicable standards for electromagnetic compatibility and immunity:

NEBS Systems Requirements (GR-1089-CORE, GR-63-CORE).

EN 55022/08.94 (EMC Directive 89/336/EEC).

EN 50081-1/01.92 and EN 50082-1/01.92 (Generic Immunity Requirements), International Electromechanical Commission (IEC 1000-4-2 through IEC 1000-4-13 / European Norm designation EN 61000-4-2 through EN 61000-4-13.

Cisco Systems Electronic Design Validation Test (EDVT) Plan ABC-123, Rev A, dated 1/29/1996.

Cisco Systems Mechanical Environmental Design and Qualification Guideline
(ENG-3396, Rev. 7).

European Telecommunication Standards Institute (ETSI) ETS 300 386-1 (December 1994).

Details on how each standard applies in this Cisco product appear in .

Table A-3 Electromagnetic Compatibility and Immunity

Category
AC-Powered (220 VAC
DC-Powered (-48V)

U.S.A EMC

FCC Part 15, Class A

not applicable

Japan EMC

Austel 3548 Class A

not applicable

Australia EMC

VCCI Class A

not applicable

CE M mark

(EMC and immunity)

EMC: EN 55022 Class A

Immunity:

EN 50082-1 (generic immunity)

EN 61000-4-2 through -5 (mandatory)

EN 61000-4-6 through -13 (not mandatory)

not applicable

NEBS

(EMC and immunity)

not applicable

EMC:
GR-1089-CORE Class A (radiated and magnetic fields) and line conductance.

Immunity:
GR-1089-CORE ESD (8 KV contact)
RS (10 V/meter)
CS (clause 3.3.3)

European Telecom Standards (ETSI) for Surge: ETSI 300 386-1, DC power leads only
(200 VAC-1000 VAC)

EDVT

Cisco Systems: Electronic Design Validation Test (EDVT) Plan
ABC-123, Rev. A, dated 1/29/1996

Cisco Systems: Electronic Design Validation Test (EDVT) Plan
ABC-123, Rev. A, 1/29/1996—DC power cycling portions only.

MDVT

Cisco Systems: Mechanical Environmental Design and Qualification Guideline, ENG-3398, Rev. 7.

NEBS requirements, physical:
(GR-63-CORE, Issue 1, October, 1995). See mandatory CE mark immunity tests in forthcoming list.


The levels for the mandatory CE mark immunity tests are:

For IEC 1000-4-2 (ESD), the test level is 4.

For IEC 1000-4-3 (RS), the test level is 3.

For IEC 1000-4-4 (EFT), the test level is 4.

For IEC 1000-4-5 (Surge), the test level is 3.

The levels for the non-mandatory CE mark immunity tests are:

For IEC 1000-4-6 and ENV 50141 (conducted disturbances induced by RF fields), the test level is 3.

For IEC 1000-4-7 and EN 610009-3-2 (harmonics and interharmonics), the test level is Class B.

For IEC 1000-4-8 (Power Frequency Magnetic Fields), the test level is 3.

For IEC 1000-4-9 (pulse magnetic field), the test level is 3.

For IEC 1000-4-10 (damped oscillatory magnetic field), the test level is 3.

For IEC 1000-4-11 (voltage dips, interruptions, and variations), no test level applies, as defined by the manufacturer per the functionality of EUT.

For ENV 50140 (RF immunity at 800 MHz), the test level is 3.

Processor Switching Module Specifications

This section contains general specifications for the Processor Switching Module (PXM). The information in includes information for the two types of back cards—the PXM-UI user interface for switch and the uplink card for trunking and CPE access.

Table A-4 PXM Specifications 

Category
Description

Maximum switch fabric throughput.

1.2 Gbps.

Control access:

These ports exits on the
PXM-UI back card.

Control port: RJ-45 connector, EIA/TIA 232, DTE mode, asynchronous interface 19,200 baud, 1 start, 1 stop, no parity.

Maintenance port: RJ-45 connector, EIA/TIA 232, DTE mode, asynchronous interface 9600 baud, 1 start bit, 1 stop bit, no parity bits.

LAN port: RJ-45 connector, 10-baseT, 802.3 Ethernet.

Uplink ports and connectors:

An uplink card can have
one of these number and type of connectors. The wavelength on optical lines is 1310 nm.

2 T3 ports, BNC connectors
2 E3, BNC connectors
4 OC3 multi-mode fiber, SC connectors
4 OC3 single-mode fiber, intermediate reach, SC connectors
4 OC3 single-mode fiber, long reach, SC connectors
1 OC12 single-mode fiber, intermediate reach, SC connectors
1 OC12 single-mode fiber, long reach, SC connectors

Number of logical ports:

32 across all physical ports on the uplink card (regardless of line type).

LEDs on PXM 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:

Red indicates major alarm.

Yellow indicates minor alarm.

Node power (note that each AC power supply also has an 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 4 requirements.

8 KHz clock derived from the following sources:

Internal 8 KHz clock (10 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 RJ-45 connector.

E1 with an SMB connector.

Trunk history counters:

Ingress, per connection:
Number of received cells with CLP=0.
Number of received cells with CLP=1.

Egress, per connection:
Number of received cells.
Number of transmitted cells.
Number of received cells with EFCI bit set.
Number of transmitted cells with EFCI bit set.

Connection capacities
supported by PXM:

Maximum number of connections:
16,000 bi-directional channels for local switching.
32,000 bi-directional channels for switching across uplink card.

Maximum aggregate bandwidth:
600 Mbps local switching (service module to service module).
1,200 Mbps switching across uplink.

Cell memory: 256K cells.

Processor clock speed and memory specifics:

Clock speed: 200 MHz internal, 50 Mhz external.

Flash memory: 2 Mbytes.

DRAM: 64 Mbytes, upgradeable to 128 Mbytes.

Secondary cache: 512 Kbytes.

BRAM: 128 Kbytes.

Hard disk: 4 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 16.83 inches (39.75 cm by 42.75 cm).
Back cards: 7.25 inches by 4.125 inches (18.42 cm by 10.48 cm).

Power:

Requires -48 VDC, dissipates 100 W.


MGX-AUSM/B-8T1E1 Interface Characteristics

This section contains details for the MGX-AUSM/B-8T1E1. For physical characteristics, see . For the T1 and E1 characteristics, see and , respectively. For ATM interface characteristics, see . For statistics and counters, see .

Table A-5 Physical Characteristics of the Eight-Port MGX-AUSM/B

l

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:

Facility loopback via loop up/down per ANSI T1.408 and
ATT TR 62411 (T1), CCITT G.7xx (E1)
Facility loopback via management console internal problem isolation loopbacks
Hot pluggable

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, 30 W

Safety:

EN 60950 2nd edition (including EN 41003) UL 1950 2nd edition

Compliance:

T1: Accunet 62411
E1: G.703, G.823

ESD:

IEC 1000-4-2


Table A-6 T1 Interface Characteristics

Category
Description

Line Interface:

RJ48 (100 W) on the LM-RJ48-8T1 back card

Line Rate:

1.544 Mbps ± 50 bps (T1)

Synchronization:

Transmitter can be: loop-timed, Receiver, or synchronized to node (normal mode)

Line Code:

Bipolar 8 Zero Substitution (B8ZS) per ANSI T1.408 (T1)

Line Framing:

Extended Superframe Format (ESF 24 frame multiframe) per ANSI T1.408

ESF Maintenance:

Bit-oriented alarm and loopback messages of ESF Data Link per ANSI T1.408

Input Jitter Tolerance:

Per ATT TR 62411

Output Jitter:

Per ATT TR 62411 using normal mode synchronization

Physical Layer Alarms:

LOS, OOF, AIS, RAI

Physical Layer
Performance Statistics:

LCV, LES, LSES, CV, ES, SES, SEFS, AISS, UAS


Table A-7 E1 Interface Characteristics

Category
Description

Line Interface Connector:

RJ48 (120 W) on LM-RJ48-8E1, or SMB (75 W) on LM-BNC-8E1

Line Rate:

2.048 Mbps ± 100 bps

Synchronization:

Transmitter can be: loop-timed, Receiver, or synchronized to shelf (normal mode)

Line Code:

HDB3 (E1)

Line Framing:

16-frame multiframe as in G.704

Input Jitter Tolerance:

As specified in ITU G.823 for 2.048 Mbps

Output Jitter Generation:

As specified in ITU G.823 for 2.048 Mbps

Physical Layer Alarms:

LOS, OOF, AIS, RAI

Physical Layer Statistics:

LCV, LES, LSES, CV, ES, SES, SEFS, AISS, UAS


Table A-8 ATM Interface Characteristics

Category
Description

Standards:

ATM UNI v3.1, ITU-T G.804, per CCITT I.361.

Channel Configuration:

1000 per card, across any of the T1 or E1 ports.

VPI/VCI Ranges:

VPI: 0-255.
VCI: 0-4096.

Traffic Classes:

CBR, VBR, VBR+.

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-9 MGX-AUSM/B-8T1E1 Statistics and Counters

Counter Type
Description

Per Port:

Number of cells received from the interface.
Number of cells received with unknown VPI/VCI.
Last known VPI/VCI received from the port.
Number of cells discarded due to error in Cell Header.
Number of cells received with non zero GRC field.
Number of cells transmitted to the interface.
Number of cells transmitted for which EFCI was set.
Number of egress cells discarded due to service interface physical alarm.

Endpoint (channel):

 

Ingress:

Number of cells received from port.
Number of cells received from the port with CLP = 1.
Number of cells received from the port with EFCI = 1.
No, of cells from the port discarded due to queue exceeded QDepth.
Number of cells (with CLP) set) discarded due to queue exceeded CLP threshold.
Number of cells from the port for which CLP was set due to UPC violations.

ATMizer channel counters:

 

Ingress:

Number of cells transmitted to Cellbus.
Number of cells to cell bus for which EFCI was set.
Number of cells to cell bus discarded due to shelf alarm.

Egress:

Number of cells received from the Cellbus.
Number of cells discarded due to queue exceeded QDepth
(per Egress Q).
Number of cells discarded due to queue exceeded CLP threshold (per Egress Q).
Number of cells received with CLP = 1.

Other Counters:

 

Ingress:

Number of OAM cells discarded.
Number of AIS cells received from the port.
Number of RDI (FERF) cells received from the port.
Number SegmentLpBk cells received from the port.
Number of SegmentLpBk cells transmitted to Cellbus.

Egress:

Number of OAM cells discarded.
Number of AIS cells transmitted to the port.
Number of SegmentLpBk cells transmitted to the port.
Number of SegmentLpBk cells received from the port.

Diagnostic Statistics:

Peak Queue Depth (Ingress: per channel).


MGX-FRSM-2CT3 Specifications

This section provides details for the following topics:

Transport technology standards with which the card complies. (See .)

General physical attributes of the card, such as LEDs on the faceplate. (See .)

Line and framer characteristics. (See and "MGX-FRSM-2CT3 Framer" section.)

Line alarms. (See "MGX-FRSM-2CT3 Line Alarms" section.)

Table A-10 Frame Relay Interface Standards

Interface
Standard

Frame Relay Interface

ANSI T1.618, 2-octet header

ATM Layer

CCITT I.361 and ATM UNI v3.1

AAL Layer

AAL5 per Draft CCITT I.363

FR-Cell Interworking

Per Draft CCITT I.555 and I.36x.1, as summarized in "ATM-to-Frame Relay Interoperability Implementation Agreement" v 1.0


Table A-11 MGX-FRSM-2CT3 Front Card Physical Characteristics

Feature
Significance or Value

Power

48 V DC, 50 W (estimated)

Card Status Indicator LEDs

Active (Green)
Failed (Red)
Standby (Yellow)

Line Status Indicator LEDs

Active & Okay (Green)
Active & Local Alarm (Red)
Active & Remote Alarm (Yellow)

Reliability

> 85000 hours MTBF (target)

Card Size

7.25 inches by 16.5 inches


Table A-12 MGX-FRSM-2CT3 Line Level

Feature
Significance or Value

Number of T3 Lines

Two

Line Interface Connector

75 ohm BNC

Line Rate

44.736 Mbps +/- 20 ppm

Line Coding

B3ZS

Transmit Timing

Normal or Loop timed

Input Jitter Tolerance

Per TR-TSY-000499

Output Jitter

0.05 UI maximum with jitter-free input clock

Output Pulse

Per T1.102.1993


MGX-FRSM-2CT3 Framer

The MGX-FRSM-2CT3 line framer:

Supports M13 or C-bit parity format.

Performs required inversion of second and fourth multiplexed DS1 streams per ANSI T1.107.

Generates loop-up code to the far-end device to loop back any of the DS1s or entire DS3 signal stream by way of the FEAC channel.

Automatically detects the incoming loop-up codes from the far-end device as well as loop back any of the DS1s or entire DS3 signal stream back to the far-end device. The loopback occurs at the M13 framer chip.

MGX-FRSM-2CT3 Line Alarms

For line alarms, the MGX-FRSM-2CT3 supports:

Detection and generation of Remote Alarm Indicator (RAI) signal (also known as FERF and Yellow signal)

Detection and generation of Alarm Indication Signal (AIS)

Detection of Out Of Frame (OOF) condition

Detection of Loss Of Frame (LOS) condition

Automatic generation of Far End Block Error (FEBE)

MGX-FRSM T3 and E3 Specifications

This section provides details for the MGX-FRSM-2T3E3. Where appropriate, it has separate sections for T3 and E3 technologies. Topics consist of

Transport technology standards with which the card complies. (See .)

General physical attributes of the card, such as LEDs on the faceplate. (See .)

Line and framer characteristics for T3 operation. (See and "T3 Framer Level.")

Line and framer characteristics for E3 operation. (See and "E3 Framer Level.")

Line alarms. (See "MGX-FRSM T3 and E3 Line Alarms.")

Table A-13 Frame Relay Interface Standards

Interface
Standard

Frame Relay Interface

ANSI T1.618, 2-octet header

ATM Layer

CCITT I.361 and ATM UNI v3.1

AAL Layer

AAL5 per Draft CCITT I.363

FR-Cell Interworking

Per Draft CCITT I.555 and I.36x.1, as summarized in "ATM-to-Frame Relay Interoperability Implementation Agreement" v 1.0


Table A-14 MGX-FRSM-2T3E3 Front Card Physical Characteristics

Feature
Significance or Value

Power

48 V DC, 50 W (estimated)

Card Status Indicator LEDs

Active (Green),
Failed (Red),
Standby (Yellow)

Line Status Indicator LEDs

Active & Okay (Green),
Active & Local Alarm (Red),
Active & Remote Alarm (Yellow)

Reliability

> 85000 hours MTBF (target)

Card Size

7.25 inches by 16.5 inches


MGX-FRSM T3 Line

The T3 line characteristics appear in .

Table A-15 T3 Line Level

Feature
Significance or Value

Number of T3 Lines

Two

Line Interface Connector

75 ohm BNC

Line Rate

44.736 Mbps +/- 20 ppm

Line Coding

B3ZS

Transmit Timing

Normal or Loop timed

Input Jitter Tolerance

Per TR-TSY-000499

Output Jitter

0.05 UI maximum with jitter-free input clock

Output Pulse

Per T1.102.1993


T3 Framer Level

For the framing characteristics of T3 operation, the MGX-FRSM-2T3E3:

Supports C-bit parity and M13 DS3 format.

Frames to a DS3 signal with a maximum average reframe time per TR-TSY-000009 and TR-TSY-000191.

Detects the alarm indication signal (AIS) in milliseconds in the presence of a 10-3 bit error rate.

When in-frame, indicates M-bit or F-bit framing errors as well as P-bit errors. In C-bit parity mode, it also indicates both C-bit parity errors and far end block errors.

MGX-FRSM E3 Line

For characteristics of the line on an MGX-FRSM-2T3E3 with an E3 back card:

Table A-16 E3 Line Level

Feature
Significance or Value

Number of E3 Lines

Two

Line Interface Connector

75 ohm BNC

Line Rate

34.368 Mbps +/- 20 ppm

Line Coding

HDB3

Transmit Timing

Normal or Loop timed

Input Jitter Tolerance

Per G.823

Output Jitter

0.05 UI maximum with jitter-free input clock per G.823

Output Pulse

Per G.703


E3 Framer Level

For line framing, the E3 operation of the MGX-FRSM-2T3E3 complies with G.751.

MGX-FRSM T3 and E3 Line Alarms

For line alarms, the MGX-FRSM-2T3E3 supports:

Detection and generation of Remote Alarm Indicator (RAI) signal (also known as FERF and Yellow signal)

Detection and generation of Alarm Indication Signal (AIS)

Detection of Out Of Frame (OOF) condition

Detection of Loss Of Frame (LOS) condition

Automatic generation of Far End Block Error (FEBE)

Statistics and Counter Specifications

For lists of applicable statistics and counters, "Counters and Statistics for FRSM-VHS Cards" in this appendix.

MGX-FRSM-HS2 Specifications

The MGX-FRSM-HS2 is the Frame Relay module with two HSSI ports. The topics in this section are:

Transport technology standards with which the card complies. (See .)

General physical attributes of the card, such as LEDs on the faceplate. (See .)

Line and framer characteristics. (See .)

For lists of the counters and statistics that are available on the MGX-FRSM-VHS series of cards, see "Counters and Statistics for FRSM-VHS Cards" in this appendix.

Table A-17 Frame Relay Interface Standards

Interface
Standard

Frame Relay Interface

ANSI T1.618, 2-octet header

ATM Layer

CCITT I.361 and ATM UNI v3.1

AAL Layer

AAL5 per Draft CCITT I.363

FR-Cell Interworking

Per Draft CCITT I.555 and I.36x.1, as summarized in ATM-to-Frame Relay Interoperability Implementation Agreement v 1.0


Table A-18 MGX-FRSM-HS2 Physical Characteristics

Feature
Significance or Value

Power

48 V DC, 50 W (estimated)
The SCSI2-2HSSI back card consumes 5 watts at 5 VDC and 6 watts at -5 VDC.

Card Status Indicator LEDs

Active (Green)
Failed (Red)
Standby (Yellow)

Line Status
Indicator LEDs

Active & Okay (Green)
Active & Local Alarm (Red)
Active & Remote Alarm (Yellow)

Reliability

> 85000 hours MTBF (target)

Card Size

Front card: 7.25" x 16.25" (18.43 cm x 41.28 cm)
Back card: 7" x 4.5" (17.78 cm x 11.43 cm)


Table A-19 MGX-FRSM-HS2 Line Characteristics 

Feature
Significance or Value

Number of HSSI Lines

Two

Connector Type

SCSI-2

Line Rate

44.736 Mbps +/- 20 ppm

Line Coding

B3ZS

Line Framing

not applicable

Line Alarms

Control lead is inactive

Recovered clock does not match configured line rate

Synchronization

Transmitter may be either loop-timed to Receiver (DTE mode), or synchronized to shelf, (DCE mode)

Input Jitter Tolerance

Per TR-TSY-000499

Output Jitter

0.05 UI maximum with jitter-free input clock

Output Pulse

Per T1.102.1993


Counters and Statistics for FRSM-VHS Cards

This section lists counters and statistics that apply to most types of cards in the FRSM-VHS group (MGX-FRSM-2CT3, MGX-FRSM-2T3E3, and MGX-FRSM-HS2/B).

Table A-20 Counters per Line 

Counter

Received frames lost due to aborts

Received frames lost due to illegal header (EA bit)

Received frames lost due to CRC errors

Received frames with bit alignment errors

Received frames with unknown DLCI

Received frames with illegal frame length

Received good frame

 

Transmit frames lost due to under-run/Abort count

Transmit good frame

 

LMI status inquiry request count

LMI signaling protocol (keep alive time-out count)

LMI sequence number error count

LMI status transmit count (in response to request)

LMI update status transmit count (in response to configuration changes

Frames with FECN set count

Frames with BECN set count

DE frames discarded count

Number of frames reassembled but discarded due to service interface physical layer alarm


Table A-21 Service-Related Statistics

Service Statistic

Number of received frames

Number of bytes received

Number of frames received with DE=1

Number of frames received but discarded

Number of received bytes discarded

Number of frames received but discarded due to:

CRC error

Illegal frame length

Alignment error

Abort

Number of frames reassembled and transmitted

Number of frames reassembled and transmitted with DE=1

Number of frames discarded due to reassembly errors

Number of frames transmitted

Number of bytes transmitted

Number of frames transmitted with DE set

Number of frames transmitted during LMI logical port alarm

Frames FECN set count

Frames BECN set count

Number of transmit frames discarded

Number of transmit bytes discarded

Number of transmit frames discarded due to:

CRC error

Illegal frame length

Alignment error

Abort

DE egress queue threshold exceeded

Physical link failure


Table A-22 ATM Cell-Related Statistics

ATM Cell Statistic

Number of cells transmitted to PXM

Number of cells discarded due to intershelf link alarm

Number of cells transmitted with CLP bit set

Number of AIS cells transmitted

Number of FERF cells transmitted

Number of BCM cells transmitted

Number of end-end loop-back cells transmitted

Number of segment loop-back cells transmitted

Number of cells received from PXM

Number of cells received with CLP bit set

Number of AIS cells received

Number of FERF cells received

Number of BCM cells received

Number of end-end loop-back cells received

Number of segment loop-back cells received

Number of OAM cells discarded due to CRC-10 error


Table A-23 Diagnostic-Related Statistics

Diagnostic Statistic

Header of last cell with unknown LCN

Header of last received frame with unknown DLCI

ECN current queue depth


Table A-24 Troubleshooting Statistics

Troubleshooting Statistic

ECN current queue depth, per channel

 

MGX-FRSM-8T1 Specification

This section provides information on the operation of the MGX-FRSM-8T1 card set. Topics are:

General physical information about the card set. (See .)

System-level interface. (See .)

Information about the Frame Relay service. (See .)

Statistics and counters. (See .)

Table A-25 General Card Specifications

Category
Description

Indicators per card:

Active (Green), Standby (Yellow), Fail (Red)

Indicators per line:

Active & Okay (Green)
Active & Local Alarm (Red)
Active & Remote Alarm (Yellow)

Line Interface connector:

RJ-48 when used with RJ48-8T1 back card.

Line Rate:

1.544 Mbps ± 50 bps

Line Framing:

ESF per ATT TR 54016

Maintenance/Serviceability Features:

Internal Problem Isolation Loopbacks
Hot-pluggable cards

Reliability, MTBF:

> 65000 hours

Card Size:

MGX-FRSM-8T1: 7.25" x 16.25"
LM-DB15-8T1: 7.0" x 4.5"
Power: -48V DC, 30W with 8 active T1 lines


Table A-26 System Interface

Category
Description

ATM Layer:

Per CCITT I.361 and ATM UNI v3.1

AAL Layer:

AAL5 per Draft CCITT I.363

FR-Cell Interworking:

Per Draft CCITT I.555 and I.36x.1, as summarized in Frame Relay Forum, FR/ATM PVC Interworking Implementation Agreement FRF.5


Table A-27

Category
Description

Synchronization:

Transmitter may be either loop-timed to Receiver or synchronized to shelf (called normal mode)

Input Jitter Tolerance:

Per ATT TR 62411

Output Jitter Generation:

Per ATT TR 62411 using normal mode synchronization

Physical Layer Alarms:

LOS, OOF, AIS, RAI

Number of Frame Relay Ports:

One-a single Frame Relay stream occupying N consecutive time slots

Frame Relay Interface Rates:

Either of the following:

56 Kbps

N x 64 Kbps (where N is the number of consecutive time slots)

Frame Relay Interface:

Per ANSI T1.618, 2-octet header

Frame Relay Performance Counters (per Port; n x DS0):

Received frames discarded due to Aborts
Received frames discarded due to illegal header (EA bit)(s)
Received frames discarded due to CRC errors (s)
Received frames discarded due to alignment errors (s)
Received frames discarded due to unknown DLCI (s)
Received frames discarded due to illegal frame length (s)
Received frames discarded due to DE threshold exceeded
Received frames with DE already set
Received frames with FECN already set
Received frames with BECN already set
Received frames tagged FECN
Received frames (s)
Received bytes (s)
Transmit frames discarded due to underrun
Transmit frames discarded due to Abort
Transmit frames discarded due to egress Q-depth exceeded (s)
Transmit bytes discarded due to egress Q-depth exceeded (s)
Transmit frames discarded due to egress DE threshold
exceeded Transmit frames (s)

 

Transmit bytes(s)
Transmit Frames with FECN set (s)
Transmit Frames with BECN set (s)

 

LMI receive status inquiry request count (s)
LMI transmit status inquiry request count
LMI invalid receive status count (s)
LMI signaling protocol (keep alive time-out count) (s)
LMI sequence number error count (s)
LMI receive status transmit count (in response to request)
LMI transmit status transmit count (in response to request)
Transmit frames during LMI alarm (s)
Transmit bytes during LMI alarm (s)
LMI update status transmit count (in response
to configuration changes)

Diagnostics (per port):

Last unknown DLCI received


Frame Relay Service With T1 Lines

Table A-28 List of Counters

Category
Description

Channels (endpoints) per card:

256, which you can allocate across any of the interfaces

Service Counters:

Note that an (s) at the end of
the description means the
data in the counter is usable as
a statistic.

Number of frames received (s)
Number of bytes received (s)
Number of frames received with DE already set (s)
Number of bytes received with DE already set (s)
Number of frames received with unknown DLCI
Number of frames received but discarded (s)
Number of received bytes discarded (s)
Number of received bytes discarded due to exceeded Q-depth (s)
Number of frames received and discarded due to: intershelf alarm
exceeded DE threshold (s)
exceeded Q depth (s)
Number of frames received with FECN set
Number of frames received with BECN set
Number of frames received tagged FECN
Number of frames received tagged BECN

 

Number of frames transmitted (s)
Number of bytes transmitted (s)

 

Number of frames transmitted with DE set (s)
Number of frames discarded due to reassembly errors (s)
Number of frames transmitted during LMI logical port alarm(s)
Number of frames transmitted with FECN set (s)
Number of frames transmitted with BECN set (s)
Number of transmit frames discarded (s)
Number of transmit bytes discarded
Number of transmit frames discarded due to: CRC error (s)
egress Q depth exceeded (s)
egress DE threshold exceeded source abort
physical link failure (T1)
ATM cells: Number of cells transmitted to PXM
Number of cells transmitted with CLP bit set
Number of OAM AIS cells transmitted (s)
Number of OAM FERF cells transmitted (s)
Number of BCM cells transmitted
Number of OAM end-end loopback cells transmitted (s)
Number of OAM segment loopback cells transmitted
Number of cells received from PXM
Number of cells received with CLP bit set
Number of OAM AIS cells received (s)
Number of OAM FERF cells received (s)
Number of BCM cells received
Number of OAM end-end loopback cells received (s)
Number of OAM segment loopback cells received
Number of OAM cells discarded due to CRC-10 error (s)

Statistics:

If any of the counters in the preceding category of Service Counters includes an "(s)," you can configure it for statistics usage.

Diagnostics:

Last unknown LCN received,
Number of cells with unknown LCN.


MGX-FRSM-8E1 Specification

This section provides information on the operation of the MGX-FRSM-8E1 card set. Topics are:

System-level interface. (See .)

General physical information about the card set. (See .)

Information about the Frame Relay service. (See .)

Statistics and counters. (See .)

Table A-29 System Interface

Category
Description

ATM Layer:

Per ITU-T I.361 and ATM UNI v3.1

AAL Layer:

AAL5 per Draft CCITT I.363

FR-Cell Interworking:

Per Draft CCITT I.555 and I.36x.1, as summarized in Frame Relay Forum, FR/ATM PVC Interworking Implementation Agreement FERF.5


Table A-30 General Card Specifications

Category
Description

Line Interface connector:

RJ-48 when used with RJ-48-8E1 line module
SMB when used with SMB-8E1 line module

Line Rate:

2.048 Mbps ± 100 bps

Synchronization:

Transmitter may be either loop-timed to Receiver or synchronized to shelf (normal mode)

Input Jitter Tolerance:

Per G.703

Output Jitter Generation:

Per G.703

Physical Layer Alarms:

LOS, OOF, AIS, RAI

Indicators per card:

Active (Green), Standby (Yellow), Fail (Red)

Indicators per line:

Active & Okay (Green)
Active & Local Alarm (Red)
Active & Remote Alarm (Yellow)

Maintenance/Serviceability Features:

Internal Problem Isolation Loopbacks
Hot-pluggable cards

Reliability, MTBF:

> 65000 hours

Card Size:

MGX-FRSM-8E1: 7.25" x 16.25" (18.43 cm x 41.28 cm)
RJ48-8E1: 7.0" x 4.5" (17.78 cm x 11.43 cm)
SMB-8E1:  7.0" x 4.5" (17.78 cm x 11.43 cm)

Power:

-48V DC, 30W with 8 active E1 lines


Table A-31 Frame Relay Service with E1 Lines

Category
Description

Number of Frame Interfaces:

1-31 occupying n, where 1 < n < 31. Sum of all < 31 for CCS or 1-30 for CAS.

Frame Relay Interface Rates:

Either 56 Kbps or n x 64 Kbps, where n is the same as defined in the preceding item the preceding item "Number of Frame Interfaces."

Ingress:

8000 cell buffer shared between virtual channels/paths
standard usage parameter control (UPC)
Selective Cell Discard
Virtual Circuit Queuing
EFCI setting per VC

Egress:

8000 cell storage capacity shared between four ports
Up to 12 user-selectable egress queues per port
Selective Cell Discard
EFCI setting per Queue

Frame Relay Interface:

Per ANSI T1.618, 2-octet header

Frame Relay Performance Counters (per Port; n x DS0):

Received frames discarded due to Aborts
Received frames discarded due to illegal header (EA bit)(s)
Received frames discarded due to CRC errors (s)
Received frames discarded due to alignment errors (s)
Received frames discarded due to unknown DLCI (s)
Received frames discarded due to illegal frame length (s)
Received frames discarded due to DE threshold exceeded
Received frames with DE already set
Received frames with FECN already set
Received frames with BECN already set
Received frames tagged FECN
Received frames (s)
Received bytes (s)

 

Transmit frames discarded due to underrun
Transmit frames discarded due to Abort
Transmit frames discarded due to egress Q-depth exceeded (s)
Transmit bytes discarded due to egress Q-depth exceeded (s)
Transmit frames discarded due to egress DE threshold exceeded Transmit frames (s)
Transmit bytes(s)
Transmit Frames with FECN set (s)
Transmit Frames with BECN set (s)
LMI receive status inquiry request count (s)
LMI transmit status inquiry request count
LMI invalid receive status count (s)
LMI signaling protocol (keep alive time-out count) (s)
LMI sequence number error count (s)
LMI receive status transmit count (in response to request)
LMI transmit status transmit count (in response to request)
Transmit frames during LMI alarm (s)
Transmit bytes during LMI alarm (s)
LMI update status transmit count (in response to configuration changes)

Diagnostics (per port):

Last unknown DLCI that arrived


Table A-32 List of Counters

Category
Description

Channels (Endpoints):

256 per card—can be allocated across any of the frame relay interfaces

Counters:

Service Counters: Number of frames received (s)
Number of bytes received (s)
Number of frames received with DE already set (s)
Number of bytes received with DE already set (s)
Number of frames received with unknown DLCI
Number of frames received but discarded (s)
Number of received bytes discarded (s)
Number of received bytes discarded due to exceeded Q-Depth (s)
Number of frames received and discarded due to:

intershelf alarm

exceeded DE threshold (s)

exceeded Q depth (s)

Number of frames received with FECN set
Number of frames received with BECN set

 

Number of frames received tagged FECN
Number of frames received tagged BECN
Number of frames transmitted (s)
Number of bytes transmitted (s)
Number of frames transmitted with DE set (s)
Number of frames discarded due to reassembly errors (s)
Number of frames transmitted during LMI logical port alarm(s)
Number of frames transmitted with FECN set (s)
Number of frames transmitted with BECN set (s)
Number of transmit frames discarded (s)
Number of transmit bytes discarded
Number of transmit frames discarded due to: CRC error (s)
egress Q depth exceeded (s)
egress DE threshold exceeded source abort physical link failure (T1)

 

ATM cells: Number of cells transmitted to PXM
Number of cells transmitted with CLP bit set
Number of OAM AIS cells transmitted (s)
Number of OAM FERF cells transmitted (s)
Number of BCM cells transmitted
Number of OAM end-end loopback cells transmitted (s)
Number of OAM segment loopback cells transmitted
Number of cells received from PXM
Number of cells received with CLP bit set
Number of OAM AIS cells received (s)
Number of OAM FERF cells received (s)
Number of BCM cells received
Number of OAM end-end loopback cells received (s)
Number of OAM segment loopback cells received
Number of OAM cells discarded due to CRC-10 error (s)
Statistics: All of the above counters followed by an (s) can be configured as statistics.
Diagnostics: 8Last unknown LCN received
Cells with unknown LCN count
Card General


MGX-SRM-3T3/B Specification

Specifications for the MGX-SRM-3T3/B appear in .

Table A-33 MGX-SRM-3T3/B Specifications

Category
Description

Connectors

BNC-3T3, with three pairs of BNC connectors

T1/E1 Line Interface Connector on
Service Modules

No connectors required for primary service module. If the MGX-SRM-3T3 provides 1:N redundancy, the standby service module requires a special back card:
R-RJ48-8T1 or R-RJ48-8E1.

T1 Channel Rate

T1: 1.544 Mbps ±75 bps (50 ppm)

Transmit Clocking

Normal or looped clocking

Input Jitter Tolerance

Per AT&T Accunet T1.5 Service 1990-T1
Per G.703-E1

Physical Layer Alarms

Indicated in respective Service Modules

Physical Layer Performance Statistics

N/A

LED Indicators Per Card

Active (green), Failed (red), Standby (yellow)

BERT

Active (green), Errors (yellow)

1 to N Redundancy

Active (green)

Indicator for each T3 lone

Active (green)

Maintenance/Serviceability Features

DS1 Loopback towards service modules

Hot pluggable

Reliability

>85000 hours MTBF

Card Size

Front card 7.25" (18.43 cm) x 16.25" (41.28 cm)
Back card 7" (17.78 cm) x 4.5" (11.43 cm)

Power

48 VDC, 50 W

Loopback codes

Fractional T1 inband loopback -
ANSI T1/E1-2/92-003 R3

DS0 loopback -
TA-TSY-000055
TA-TSY-000057
TA-TSY-0000476

Monitoring trouble codes

TA-TSY-000077
TA-TSY-0000280
ATT TR-62310


Circuit Emulation Service for T3 and E3

The physical layer characteristics for the MGX-CESM-T3 and MGX-CESM-E3 are the same as the MGX-CESM-T3 and MGX-CESM-E3, respectively. For these characteristics, refer to and . The available counters appear in the lists that follow. The categories are:

T3 and E3 line framers

AAL1 SAR

Transmitted and received ATM cells

The counters for the T3 and E3 line framers are:

F-Bit error count (T3)

P-Bit error Count (T3)

CP-Bit error Count

FEBE Count

BPV Count

The counters for AAL1 SAR are:

Number of OAM cells received

Number of OAM cells dropped. FIFO Full

Number of SN CRC's not correctable

Number of Cells with SN different than SN+1

Number of Cells received from UTOPIA Interface

Number of Cells transmitted to UTOPIA Interface

Number of Conditioned Cells transmitted to UTOPIA Interface

Number of Cells not sent due to line resynchronization

The counters for transmitted ATM cells are:

Number of cells transmitted to PXM

Number of cells discarded due to intershelf link alarm

Number of cells transmitted with CLP bit set

Number of AIS cells transmitted

Number of FERF cells transmitted

Number of BCM cells transmitted

Number of end-end loop-back cells transmitted

Number of segment loop-back cells transmitted

The counters for received ATM cells are:

Number of cells received from PXM

Number of cells received with CLP bit set

Number of AIS cells received

Number of FERF cells received

Number of BCM cells received

Number of end-end loop-back cells received

Number of segment loop-back cells received

Number of OAM cells discarded due to CRC-10 error

The diagnostics report the header of last cell with an unknown logical connection number LCN.

Circuit Emulation Service Module for T1 Operation

This section contains operational details for the MGX-CESM-8T1 and MGX-CESM-8E1.

Table A-34 CESM 8T1 Card Information

Category
Description

Back Card

RJ48-8T1

Line Rate

T1: 1.544 Mbps ±75 bps (50 ppm)

Transmit Clocking

Normal clock or SRTS generated

Line Coding

B8ZS
AMI

Frame mode

SF
ESF

Line alarms

Loss or signal (LOS)
Loss of frame (LOF)
Loss of mulitframe (LOMF)
Remote loss of signal or frame (RAI)
All ones received (AIS)
Bipolar violation

Alarm indication times

Near end alarm up-count
Near end alarm down-count
Near end alarm maximum count
Far end alarm up-count
Far end alarm down-count
Far end alarm maximum count

Supported OAM cells

AIS
FERF
End-to-end loopback
Segment loopback
RTD loopback
BCM

Physical Layer Performance Statistics

N/A

LED Indicators Per Card

Active (green), Failed (red), Standby (yellow)

BERT

T1 E1 1.2

1 to N Redundancy

Active (green)

Indicator for each T1

Active (green)

Reliability, MTBF

Card Size

Front card: 7.25" x 16.25" (18.43 cm x 41.28 cm)
Back card: 7" x 4.5" (17.78 cm x 11.43 cm)

Power

48VDC, 50 W

Loopbacks

On or Off


Circuit Emulation Service Module for E1 Operation

This section contains operational details for the MGX-CESM-8E1.

Table A-35 CESM 8E1 Card Set Details

Category
Description

Back Card

RJ48-8E or SMB-8E1

Line Rate

E1: 2.048 Mbps ± 100 bps (50 ppm)

Transmit Clocking

Normal clock or SRTS generated

Line Coding

HDB3
AMI

Frame mode

single frame
multiframe

Line alarms

Loss or signal (LOS)
Loss of frame (LOF)
Loss of mulitframe (LOMF)
Remote loss of signal or frame (RAI)
All ones received (AIS)
Bipolar violation

Alarm indication times

Near end alarm up-count
Near end alarm down-count
Near end alarm maximum count
Far end alarm up-count
Far end alarm down-count
Far end alarm maximum count

Supported OAM cells:

AIS
FERF
End-to-end loopback
Segment loopback
RTD loopback
BCM

Physical Layer Performance Statistics

N/A

Indicators:
 

Card-level

Active (green), Failed (red), Standby (yellow)

BERT

Active (green), Errors (yellow)

1 to N Redundancy

Active (green)

Indicator for each T1

Active (green)

Reliability, MTBF

Card Size

Front card: 7.25" x 16.25" (18.43 cm x 41.28 cm)
Back card: 7" x 4.5" (17.78 cm x 11.43 cm)

Power

48VDC, 50 W

Loopbacks

On or Off