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Cisco WAN Switching Modules

MGX8000 Series Multiservice Switch Broadband ATM Switching

Table Of Contents

Data Sheet

ATM Layer

Virtual Trunks

Cell Buffering

Support for Dynamic Routing Using PNNI

Enhanced Call Admission Control

Statistics

Operation, Administration, and Management

Network Management

Physical Specifications

Electrical Specifications

Electrical, Safety, and Standards Compliance

Data Sheet


Cisco MGX 8000 Series Multiservice Switch

Broadband ATM Switching Module

The Cisco MGX® 8000 Series Multiservice Switch Broadband ATM Switching Module (AXSM) can be used with the Cisco MGX 8850 PXM-45 or the Cisco MGX 8950 Multiservice Switches to deliver broadband connectivity from T3/E3 up to OC-48c/STM 16 speeds.

The class of service (Cos) queue architecture of the Cisco AXSM offers the industry's most advanced and reliable multiservice networking features. These features include Private Network-Network Interface (PNNI), switched virtual circuit/path (SVC/SVP), soft permanent virtual circuit/path (SPVC/SPVP), and Multiprotocol Label Switching (MPLS).

AXSM Ports

16 x T3/E3

16 x OC-3c/STM-1

4 x OC-12c/STM-4

1 x OC-48c/STM-16

Key Features

Each port is configurable for either trunk or access applications

Each OC-48c/STM-16 delivers fully non-blocking, full-duplex through-put

Up to 16 ATM service classes are supported

Carrier-class implementation of standards-based PNNI, SVC/SVP and MPLS services are supported

Large cell buffers (one million cell) help to maximize "goodput" performance during congestion

Dynamically allocated buffers depending on connection resource needs, thereby optimizing use of system resources

High reliability with hot-standby 1:1 AXSM card redundancy, 1:1 and 1+1 line redundancy using automatic protection switching (APS)

Key Applications

Broadband aggregation

Technical Specifications
Physical Layer T3/E3 Interface

Supports ports and trunks on same Cisco AXSM module

Supports User-Network Interface (UNI) specifications 3.0, 3.1, and 4.0

Table 1  Cisco MGX® 8000 Series AXSM T3/E3 Module connection specifications
Type of back card
T3
E3

Port speed

44.736 Mbps

34.368 Mbps

Cell transfer rate

96,000 cells/sec

80,000 cells/sec

Number of ports per Cisco AXSM module

16

16

Line coding

B3ZS1

HDB32

Line framing

ANSI T1.107, T1.107a

ITU-T G.804, G.832

Port media

75-ohm coaxial

75-ohm coaxial

Port connector

SMB3

SMB

Cell mapping

PLCP4

Direct

PLCP

Direct

Redundancy

1:1, Y-cable

1:1, Y-cable


1Binary 8-zero substitution

2High-density bipolar with three zeros

3Small/medium business

4Physical layer convergence procedure

Physical Layer OC-3c/STM-1 Interface

Supports ports and trunks on same Cisco AXSM module

Supports User-Network Interface (UNI) specifications 3.0, 3.1, and 4.0

Compliant with Synchronous Optical Network (SONET) standards

Bellcore GR-253-CORE

ANSI T1.105

Compliant with Synchronous Digital Hierarchy (SDH) standards

ITU-T G.707, G.708, and G.709

ITU-T G.957 and G.958

Table 2  Cisco MGX® 8000 Series AXSM OC-3c/STM-1 Module connection Specifications
Type of back card
STM-1 electrical
MMF1
SMF-IR2
SMF-LR3

Port speed

155 Mbps

155 Mbps

155 Mbps

155 Mbps

Cell transfer rate

353,208 cells/sec

353,208 cells/sec

353,208 cells/sec

353,208 cells/sec

Number of ports per Cisco AXSM module

8

16

16

16

Port media

75-ohm coaxial

MMF

SMF

SMF

Port connector

SMB

MT-RJ

LC

LC

Optics

-

Laser 1310 nm

Laser 1310 nm

Laser 1310 nm

Tx Power Level (dBm)

-

-15 min

-8 max

-15 min

-8 max

-5 min

0 max

Rx Power Level (dBm)

-

-23 min

-8 max

-28 min

-8 max

-34 min

-10 max

Typical Reach/Km

-

2

15

40

Redundancy

1:1, Y-cable, 1+1 and 1:1 APS

1+1 and 1:1 APS

1:1, Y-cable, 1+1 and 1:1 APS

1:1, Y-cable, 1+1 and 1:1 APS


1Multimode frequency

2Single-mode frequency, intermediate reach

3Single-mode frequency, long reach

Physical Layer OC-12c/STM-4 Interface

Supports ports and trunks on same Cisco AXSM module

Supports UNI specifications 3.0, 3.1, and 4.0

Compliant with SONET standards

Bellcore GR-253-CORE, TR-TSY-000020

ANSI T1.105

Compliant with SDH standards

ITU-T G.707, G.708, G.709

ITU-T G.957, G.958

Table 3  Cisco MGX® 8000 Series AXSM OC-12c/STM-4 Module connection specifications
Type of back card
SMF-IR
SMF-LR

Port speed

622 Mbps

622 Mbps

Cell transfer rate

1,412,832 cells/sec

1,412,832 cells/sec

Number of ports per Cisco AXSM module

4

4

Port media

SMF

SMF

Port connector

SC

SC

Optics laser

Laser 1310 nm

Laser 1310 nm

Transmit power level (dBm)

-15 min

-8 max

-3 min

+2 max

Receive power level (dBm)

-28 min

-8 max

-28 min

-8 max

Typical reach per kilometer

15

40

Redundancy

1:1, Y-cable, 1+1 and 1:1 APS

1:1, Y-cable, 1+1 and 1:1 APS


Physical Layer OC-48c/STM-16 Interface

Supports ports and trunks on same Cisco AXSM module

Supports UNI specifications 3.0, 3.1, and 4.0

Compliant with SONET standards

Bellcore GR-253-CORE

ANSI T1.105

Compliant with SDH standards

ITU-T G.707, G.708, and G.709

ITU-T G.957, G.958

Table 4  Cisco MGX® 8000 Series AXSM OC-48c/STM-16 Module connection specifications
Type of back card
SMF-SR
SMF-LR
SMF-XLR1

Port speed

2.4 Gbps

2.4 Gbps

2.4 Gbps

Cell transfer rate

5,651,328 cells/sec

5,651,328 cells/sec

5,651,328 cells/sec

Number of ports per Cisco AXSM module

1

1

1

Port media

SMF

SMF

SMF

Port connector

SC

SC

SC

Optics

Laser 1310 nm

Laser 1310 nm

Laser 1550 nm

Transmit power level (dBm)

-10 min

-3max

-2 min

+3 max

-2 min

+3 max

Receive power level (dBm)

-18 min

-3 max

-27 min

-9 max

-27 min

-9 max

Typical reach per kilometer

2

40

80

Redundancy

1:1, Y-cable, 1+1 and 1:1 APS

1:1, Y-cable, 1+1 and 1:1 APS

1:1, Y-cable, 1+1 and 1:1 APS


1Single-mode fiber, extra-long reach

Network Synchronization

Configurable for internal timing from the internal Cisco PXM-45 Layer 3 clock

System clock synchronization to any service module port

T1/E1 Building Integrated Timing Supply (BITS) synchronization port

ATM Layer

Conforms to ATM Forum UNI 3.0, 3.1, and 4.0 and ITU-T I.361 and I.432 specifications

Supports IP quality of service (QoS) based on differentiated services (Diff-Serv)

Supports Integrated Local Management Interface (ILMI) 4.0

Complies with standard Usage Parameter Control (UPC) per ATM Forum UNI 3.x, TM 4.0, and ITU-T I.371

Supports early packet discard (EPD), Weighted Random Early Detection (WRED) and partial packet discard (PPD)

Supports virtual circuit connections (VCCs) and virtual path connections (VPCs)

Supports up to 128,000 connections per Cisco AXSM module controlled by Private Network-Network Interface (PNNI)

Supports virtual path identifier (VPI) and virtual channel identifier (VCI) range for VCCs and VPCs per UNI 3.1

Supports virtual channel merge and multipoint connections

Virtual Trunks

Supports maximum of 64 virtual interfaces per module; the interfaces can be ports, trunks, or virtual trunks

Cell Buffering

Supports one million cells of buffering to accommodate large traffic bursts, avoiding network congestion and cell discard; suitable for TCP/IP traffic

Support for Dynamic Routing Using PNNI

Provides automatic end-to-end connection management mechanism

Deterministically allocates bandwidth and reroutes connections autonomously over optimum network paths

Preserves service integrity during network failure

Offers E.164/NSAP addressing

Offers QoS-based routing

Enhanced Call Admission Control

A user-programmable Call Admission Control (CAC) feature (Enhanced CAC [E-CAC]) decides whether to admit or deny connections based upon the requested QoS.

Statistics

Statistics supported using user-configurable bucket intervals

Billing statistics supported on T3/E3, OC-3c/STM-1, and OC-12c/STM-4 interfaces

Diagnostic statistics available per interface, CoS queues, and connections

Operation, Administration, and Management

Supports F4 to F5 fault propagation

Supports inband diagnostics using loopback cells

Supports inband continuity checks and automatic fault reporting for PVCs

Supports loopback facility for diagnostics and self-test purposes

Network Management

Managed by Cisco WAN Manager Software suite

Based on standards-based Simple Network Management Protocol (SNMP)

Physical Specifications

Dimensions: (H x D): 15.83 x 15.65 in. (40.20 x 39.75 cm)

Electrical Specifications

Input power required: -48 VDC

Power consumption: 95W

Electrical, Safety, and Standards Compliance

EMI/ESD compliance

FCC Part 15

Bellcore GR1089-CORE

IEC 801-2

EN55022

Safety compliance

EN 60950

UL 1950

Bellcore NEBS: Level 3 compliant

Optical safety: IEC 825-1 (Class 1)