Cisco bpx-bxm-t3-12 Guia De Especificação

D

ATA

S

HEET

BXM-T3/E3 Broadband Switch Module

T

H E

B X M - T 3 / E 3

I S A H I G H

-

D E N S I T Y

AT M T 3 / E 3

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

APPLICATION

-

SPECIFIC INTEGRATED CIRCUIT

(ASIC)

TECHNOLOGY

,

FOR THE

BPX 8600 S

ERIES

,

TO DELIVER

THE INDUSTRY

’

S MOST ADVANCED AND RELIABLE

ATM

NETWORKING FEATURES

. I

T

S

UPPORTS

PVC

S

, SVC

S

,

S-PVC

S AND

MPLS LVC

S

(

LABEL

VC)

AND PROVIDES CARD REDUNDANCY PROTECTION

. I

TS HIGH

-

SPEED

CONNECTIVITY TAKES

ATM

TO NEW LEVELS OF EFFICIENCY AND SCALABILITY

.

T

HE ENHANCED MODELS OF THE

BXM-T3/E3

ALSO DELIVER THE MOST ADVANCED ATM SWITCHING AND

TRAFFIC MANAGEMENT CAPABILITIES IN THE INDUSTRY

. T

HESE MODELS EXTEND SCALABILITY BY DOUBLING

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

FOR VC MERGING FOR LARGE

MPLS-

BASED

IP+ATM

NETWORKS

.

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

ATM ports on a single Cisco BPX

®

 8600 series

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

™

8400

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.

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.

• 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:

• 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

• Configurable for trunk and public or private UNI application

Line Rate

44.736 Mbps   20 ppm

34.368 Mbps   20ppm

Line Code

B3ZS

HDB3

Cell transfer rate

96,000 cells/sec

80,000 cells/sec

Framing

ANSI T1.107, T1.107a

ITU-T G.804, G.832

Signal Level

TA-TSY-00077 (PLCP)

ITU-T G.703

Connector

Locking SMB

Locking SMB

Cell Mapping

Direct

Direct