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DATA SHEET
BXM-T3/E3 Broadband Switch Module
THE BXM-T3/E3 IS A HIGH-DENSITY ATM T3/E3 INTERFACE CARD THAT USES CUSTOM
APPLICATION
THE INDUSTRY
S-PVC
CONNECTIVITY TAKES
HE ENHANCED MODELS OF THE BXM-T3/E3 ALSO DELIVER THE MOST ADVANCED ATM SWITCHING AND
T
TRAFFIC MANAGEMENT CAPABILITIES IN THE INDUSTRY
BXM-T3/E3 Broadband Switch Module
THE CONNECTION DENSITY AND CELL BUFFERS ON SELECTED MODELS AS WELL AS PROVIDE FUTURE SUPPORT
FOR VC MERGING FOR LARGE
-SPECIFIC INTEGRATED CIRCUIT (ASIC) TECHNOLOGY, FOR THE BPX 8600 SERIES, TO DELIVER
’S MOST ADVANCED AND RELIABLE ATM NETWORKING FEATURES.IT SUPPORTS PVCS, SVCS,
S AND MPLS LVCS (LABEL VC) AND PROVIDES CARD REDUNDANCY PROTECTION.ITS HIGH-SPEED
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/virtualdestination (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)
Withthe increasing deployment of Asynchronous TransferMode
(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.
ATM TO NEW LEVELS OF EFFICIENCY AND SCALABILITY.
.THESE MODELS EXTEND SCALABILITY BY DOUBLING
MPLS-BASED IP+ATM 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
®
8600 series
™
8400
cardfor the BPX switch platform. The interfacecan 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) E3 (34 Mbps)
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
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
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• UNI conformant to ATM Forum UNI Specification V.3.1,
ITU-T I.361 and I.432 specifications
• Support for ATM Forum ILMI 4.0
• Complies with standard Usage Parameter Control (UPC) per
ATM Forum UNI Specification V.3.1, TM 4.0 and ITU-T I.371
• Supports virtual circuit connections (VCCs) and virtual path
connections (VPCs) per ATM Forum UNI Specification V.3.1
and ITU-T I.371
• Connections:
– 16,384 to 32,768 connections per card per UNI Specification
3.1
• Virtual path identifier (VPI)/virtual channel identifier (VCI)
range for VCCs and VPCs: per UNI Specification V.3.1
• Support for VC merging with future software upgrade
(enhanced -E and -EX models only)
Traffic Management
• Per-VC queuing and scheduling
• Per-VC traffic shaping
• Per-VC weighted fair queuing (WFQ)
• Up to 16 classes of service with the following configurable
parameters:
– Separate cell discard threshold for CLP0 and CLP1 cells
– Separate early packet discard (EPD) threshold for CLP0 and
CLP1 cells with future software upgrade (enhanced -E and
-EX models only)
– Maximum Queue Depth (MQD) with partial packet discard
(PPD)
– Service Priority Level (SPL)
– Explicit Forward Congestion Indication (EFCI) threshold
Constant Bit Rate Service
• UPC per ATM Forum UNI Specification V.3.1, TM V.4.0 and
ITU-T I.371
• UPC: Ingress rate monitoring and discarding for:
– Peak Cell Rate (PCR)
– Cell Delay Variation Tolerance (CDVT)
Variable Bit Rate Service
• UPC per ATM Forum UNI Specification V.3.1, TM V.4.0 and
ITU-T I.371
• UPC: Ingress rate monitoring and cell tagging for:
– PCR
– CDVT
– Sustainable Cell Rate (SCR)
– Maximum Burst Size (MBS)
• CLP tagging, enabled, or disabled on a per-virtual circuit (VC)
basis at the ingress side
• Support for both VBR-rt and VBR-nrt
• EPD
ABR Service and Congestion Control
• VS/VD per ATM Forum Traffic Management
Specification V.4.0
• Explicit Rate (ER) stamping
• EFCI tagging monitoring
• ForeSight
®
• Support for non-AAL5 traffic (enhanced -E and -EX models
only)
ABR VS/VD
• VS and VD resource management (RM) cell generation and
termination
• Virtual connection queue (VCQ) assigned to each VC ingress
• VCQ configurable parameters:
– Separate cell discard threshold for CLP0 and CLP1 cells
– EPD threshold
– Maximum queue depth with PPD
– Reserved buffer space for RM cells
• Support for UBR and VBR access
®
• Interworking with ForeSight
(enhanced -E and -EX models
only)
Unspecified Bit Rate Service
• UPC per ATM Forum UNI Specification V.3.1, TM V.4.0 and
ITU-T I.371
• Minimum cell rate configurable and guaranteed
• EPD
Virtual Trunks
• Support for up to 31 virtual trunks per card, each with 16
class-of-service queues
• UNIand NNI option for the interface with public ATM network
• Per virtual trunk traffic shaping
• Reconfigurable maximum trunk rate
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BXM T3/E3 Broadband Switch Module
Switched Virtual Circuits
• Signaling protocol per ATM Forum UNI Specification V.3.0
and V.3.1
• E.164/NSAP addressing per ATM Forum UNI
Specification V.3.1
• Support for Private Network-Network Interface (PNNI) per
ATM Forum PNNI Specification V.1.0
Fault Management and Reporting
• Compliant with Bellcore GR-253-CORE
Alarms
• Loss of Signal (LOS)
• Loss of Pointer (LOP)
• Loss of Frame (LOF)
• Loss of Cell Delineation (LOC)
• Alarm Indication Signal (AIS)
• Remote Defect Indication (RDI)
• Alarm integration up/down count
Cell Buffering
• Large ingress and egress cell buffer architecture
• 204,800 to 1,024,000 cells stored per card
– Accommodate large traffic bursts
– Avoid network congestion and cell discard
– Suited to TCP/IP traffic
Intelligent QoS (Quality of Service) Management Suite
Connection Admission Control (CAC)
Automatic Routing Management
• Automatic end-to-end connection management mechanism
• Deterministically allocates bandwidth and routes VCs
autonomously over optimum network paths
• Automaticrerouting preserves service integrity during network
failures
Advanced CoS (Class of Service) Management
• Up to 16 class-of-service queues, with independent service
algorithms dedicated to each interface in the network
Optimized Bandwidth Management
• Dedicated queue- and rate-controlled servers for each VCC/
VPC
• Dynamic thresholding, providing fairness and more than
95 percent utilization
ATM-Frame Relay (FR) Service Interworking
• Provides transparent end-to-end connectivity, operating two
services on a single switch platform
Performance Monitoring
• Performance monitoring provided for line, section, and path
• Bit Interleaved Parity (BIP) error detection
• Far-End Block Error (FEBE) count
• Unavailable Seconds (UAS)
• Errored Seconds (ES)
• Severely Errored Seconds (SES)
• Header Checksum (HCS) monitoring
Statistics
• ATM statistics collected on a per-VC basis
• Four levels of ATM-layer statistics collection provided
OAM
• Segment and end-to-end Operations, Administration and
Maintenance (OAM) loopbacks supported per Bellcore
TA-NWT-001248
• External OAM segment flows, consisting of segment loopback
cells per ATM Forum UNI Specification V.3.1 and ITU-T I.371
• Generation and detection of AIS and RDI OAM cells
• OAM cell generation and loopback facility supported for
diagnostics and self-test purposes
Network Management
• Management using Cisco Wan Manager™ software
• Simple Network Management Protocol (SNMP)-based
for configuration and statistics collection
• Graphical user interface
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Alarm Indicators
• Via LEDs on face plate
Status
Site
Card Active Standby Fail
Port Active and OK Active—remote
Physical Specifications
Alarm
LED Green
Alarm
LED Yellow
alarm
Alarm
LED Red
Active—local
alarm
• Dimensions: (H x W x D) 19 in x 1.1 in x 27 in (48.26 cm x
2.79 cm x 68.58 cm)
• Weight: 6 lb (2.7 kg)
Electrical Specifications
• Input power required: -48V DC
• Power consumption: 100W
Electrical and Safety 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
Summary Specifications
Product Number
BXM-T3-8,
BXM-E3-8
Product Number
BXM-T3-12,
BXM-E3-12
BXM-T3-8E,
BXM-E3-8E
BXM-T3-12E,
BXM-E3-12E
BXM-T3-12EX,
BXM-E3-12EX
Enhanced
Model
Number of
Ports per Card
8 102,400 102,400 16,384/32,768
Ingress Cell
Buffer (cells)
Egress Cell
Buffer (cells)
Connections per
Card
VC Merge
Capable
Number of
Number of
Enhanced
Model
Yes 8 256,000 256,000 16,384/32,768 Yes
Yes 12 256,000 256,000 16,384/32,768 Yes
Yes 12 512,,000 512,000 32,768 Yes
Number of
Ports per Card
12 133,120 235,520 16,384/32,768
Ingress Cell
Buffer (cells)
Egress Cell
Buffer (cells)
Connections per
Card
VC Merge
Capable
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San Jose, CA 95134-1706
USA
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Tel: 408 526-4000
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Copyright © 1999 Cisco Systems, Inc. All rights reserved. Printed in the USA. BPX, Cisco WAN Manager, Cisco, Cisco IOS, ForeSight, Cisco Systems, and the Cisco Systems logo are registered trademarks of Cisco Systems, Inc.
in the U.S. and certain other countries. All other trademarks mentioned in this document are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any of
its resellers.(9907R) 7/99 LW
Americas
Headquarters
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706
USA
http://www.cisco.com
Tel: 408 526-7660
Fax: 408 527-0883
Asia Headquarters
Nihon Cisco Systems K.K.
Fuji Building, 9th Floor
3-2-3 Marunouchi
Chiyoda-ku, Tokyo 100
Japan
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Tel: 81 3 5219 6250
Fax: 81 3 5219 6001
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