Cisco BXM-T3-12EX Информационный лист

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BXM-T3/E3 Broadband Switch Module

B X M - T 3 / E 3

H E

I S A H I G H

APPLICATION

SPECIFIC INTEGRATED CIRCUIT

THE INDUSTRY

S MOST ADVANCED AND RELIABLE

S-PVC

MPLS LVC

S AND

ATM

CONNECTIVITY TAKES

HE ENHANCED MODELS OF THE

TRAFFIC MANAGEMENT CAPABILITIES IN THE INDUSTRY

THE CONNECTION DENSITY AND CELL BUFFERS ON SELECTED MODELS AS WELL AS PROVIDE FUTURE SUPPORT

FOR VC MERGING FOR LARGE

Key Features

• High-scalability connection densities with up to 144 T3/E3

ATM ports on a single Cisco BPX

wide-area switch

• Complete network control through dynamic resource sharing

and support for all ATM service classes

• Industry's ﬁrst fully compliant ATM Forum available bit rate

(ABR) virtual source/virtual destination (VS/VD) capability in

custom ASICs

• New level of ATM price/performance to optimize the network

life cycle

• Support for VC merging with future software upgrade allows

"label" sharing for different MPLS VCs with the same

destination and class of service (enhanced -E and -EX

models only)

With the increasing deployment of Asynchronous Transfer Mode

(ATM) networks, there is a growing need for an ATM network

platform that can deliver an unprecedented level of scalability,

performance, and functionality at lower costs. Such an ATM

switching platform must support high-speed interfaces with high

port densities as well as advanced ATM trafﬁc management

capability.

Advanced ATM trafﬁc management capabilities are

implemented in a family of custom ASICs that enable

high-density, high-speed ATM interface modules with advanced

features and functionality for the BPX 8600 and IGX

series wide-area switches.

This ASIC technology cost-effectively delivers the most

advanced ATM switching and trafﬁc management capability in

the industry. It represents the ﬁrst commercially available

implementation of VS/VD.

AT M T 3 / E 3

D E N S I T Y

(ASIC)

ATM

(

VC)

LABEL

AND PROVIDES CARD REDUNDANCY PROTECTION

TO NEW LEVELS OF EFFICIENCY AND SCALABILITY

BXM-T3/E3

ALSO DELIVER THE MOST ADVANCED ATM SWITCHING AND

MPLS-

IP+ATM

BASED

8600 series

™

8400

I N T E R F A C E C A R D T H AT U S E S C U S T O M

BPX 8600 S

TECHNOLOGY

FOR THE

NETWORKING FEATURES

. T

HESE MODELS EXTEND SCALABILITY BY DOUBLING

NETWORKS

The BXM-T3/E3 broadband switch module is a 8-, or 12-

port, Digital Signal level 3 (DS-3) (45 or 34 Mbps) ATM interface

card for the BPX switch platform. The interface can be conﬁgured

for trunk, public, or private User-Network Interface (UNI)

applications on a per-port basis to provide a high-density,

low-cost broadband ATM networking solution.

Technical Specifications

Physical Layer

• 8-, or 12-port T3/E3 ports

• Complies with ATM Forum UNI Speciﬁcation Version 3.1, 4.0

• 1:1 BXM redundancy supported using 'Y' redundancy

• Interface Physical Characteristics:

Characteristic

T3 (DS3)

Line Rate

44.736 Mbps 20 ppm

Line Code

B3ZS

Cell transfer rate

96,000 cells/sec

Framing

ANSI T1.107, T1.107a

Signal Level

TA-TSY-00077 (PLCP)

Connector

Locking SMB

Cell Mapping

Direct

Synchronization

• Can be conﬁgured for internal timing from the BPX internal

Stratum 3 clock conforming to ATT Pub. 62411

• System clock synchronization to service module port option

ATM Layer

• Conﬁgurable for trunk and public or private UNI application

ATA

HEET

ERIES

TO DELIVER

. I

PVC

, SVC

UPPORTS

. I

TS HIGH

SPEED

E3 (34 Mbps)

34.368 Mbps 20ppm

HDB3

80,000 cells/sec

ITU-T G.804, G.832

ITU-T G.703

Locking SMB

Direct