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This chapter provides information about the StrataCom BPX Service Node. The information is organized into the following sections:
http://www.cisco.com. For more information, see the chapter "Documentation" at the end of the catalog.
The StrataCom BPX Service Node is a powerful broadband ATM switch. Designed to meet the demanding, high-traffic needs of a public service provider or large private enterprise, the BPX Service Node delivers high-performance ATM adaptation and aggregation for all types of user traffic.
The BPX Service Node offers 10 to 20 Gbps of high-throughput switching for multiple traffic types---voice, data, and image. The switch improves network and trunk utilization to more that 95 percent and supports a wide range of interfaces from Frame Relay to full broadband subscriber interfaces up to 622 Mbps. You can offer multiple services for LAN, X.25, SNA, Frame Relay, and ATM traffic from a single BPX platform.
The BPX Service Node provides 800 Mbps of dedicated bandwidth to each of 12 available slots, allowing you to expand capacity and maintain high performance. Narrowband interfaces are provisioned on separate shelves for full utilization of BPX Service Node capacity to deliver narrowband and broadband services.
The BPX Service Node delivers the following services:
The BPX Service Node switch includes the following features:
The BPX Service Node integrates narrowband and broadband services in a single, highly reliable platform. The BPX broadband shelf supports 20-Gbps of switching capacity. The broadband shelf includes a crosspoint switching fabric that supports broadband interfaces and switches ATM cells over broadband network trunks. The AXIS interface shelf supports narrowband interfaces, adapting non-ATM traffic into 53-byte ATM cells and concentrating it for high-speed switching by the broadband shelf. By integrating narrowband and broadband interfaces on a single platform, service providers can fully utilize the node capacity, incrementally expand capacity as needed, and cost-effectively provide services to an almost unlimited number of subscribers.
Intelligent Advanced Switching Capabilities
The BPX Service Node also includes the StrataCom Intelligent Network Server (INS) node control processor, which provides intelligent call processing for Frame Relay and ATM switched virtual circuits (SVCs), switched voice services (DPNSS, Q.931), and dial-up services. The INS allows service providers to support advanced applications such as dial-up Internet and intranet access for remote users, LAN Emulation (LANE) to bridge network traffic between multiple LANs, and transport of multiple protocols over ATM.
The BPX broadband shelf, AXIS interface shelf, INS node control processors, and applications and services are managed as a single network element. With the StrataCom StrataSphere network management solution, this integrated approach allows network managers to simplify management of multiple services and Service Nodes.
The BPX Service Node is designed for the highest levels of reliability in mission-critical enterprise networks and demanding service provider environments. Every system component can be configured for 100 percent redundancy, and all BPX modules can be removed and reinserted without affecting the performance of other modules or impacting service delivery. In addition, AutoRoute connection management automatically reroutes virtual circuits in the event of a trunk failure.
With high port density, each BPX Service Node supports numbers of users ranging from hundreds to hundreds of thousands, while lowering the cost per subscriber. Capacity can be added as demand requires, giving the BPX unmatched scalability to meet the demands of rapidly increasing numbers of subscribers and deployment of multiple services such as ATM, Frame Relay, Internet, and video. With a capacity of 20 Gbps, BPX-based networks deliver the highest levels of performance for large files, high traffic volumes, and delay-sensitive voice and video. Support for interface speeds up to OC-12/STM-4
(622 Mbps) enable organizations to deliver multiple, high-quality services ranging from transparent LAN services and virtual private network services to video and LAN-to-ATM access capabilities.
High Service Availability and Performance
The BPX Service Node is deployed in the world's largest public ATM and Frame Relay data services---it is a proven switching solution. Robust, redundant architecture ensures high service availability, allowing service providers to provide uninterrupted service to millions of subscribers worldwide. The breadth of interface options, advanced traffic management capabilities, and sophisticated built-in network management features maximize application performance. High throughput without data loss allows service providers to guarantee quality of service and application performance, ensuring subscriber satisfaction and improving subscriber retention.
Broadband and Narrowband Services
The BPX Service Node has a modular design that supports both broadband and narrowband user services through a broadband shelf and support for up to 16 AXIS interface shelves.
The broadband shelf is the heart of the BPX Service Node, providing a 20-Gbps crosspoint switching fabric in a 15-slot chassis. Three slots are reserved for common control modules, and 12 slots are provided for interface modules. The switch employs a midplane design, and each front card has a corresponding line module providing the physical interface to the transmission media. This design permits easy upgrading or replacement of function modules without disturbing cabling.
The broadband shelf design includes three functional card groups---the common core group, the service interface group, and the network interface group. A separate network management interface provides the connection to the StrataSphere network management platform.
Common core cards provide the following functions:
ATM Service Interface (ASI) modules provide standard interfaces for connecting to cell-based customer premise equipment (via ATM UNI standard user interface) or to non-StrataCom networks (via NNI network interface).
ASI modules support native ATM sessions at speeds of T1/E1, n x T1/E1 Inverse Multiplex ATM (IMA), T3/E3, OC3/STM-1, and OC12/STM-4. These interfaces enable configuration of permanent virtual circuits (PVCs) or switched virtual circuits (SVCs) for the following service classes:
ASI modules support up to 16 classes of service and both ATM Frame Relay network interworking and service interworking, giving them the ability to handle all currently defined ATM traffic types, as well as future types.
Broadband Network Interface (BNI) modules connect the BPX Service Node to other BPX or StrataCom IGX and IPX nodes. These modules support up to 16 classes of service and network trunk interfaces including T1/E1, n x T1/E1 IMA, T3/E3, OC3/STM-1, and OC12/STM-4.
Virtual Trunking allows enterprise customers and service providers to interconnect BPX Service Nodes through a public ATM service or ATM crossconnect. When interconnected, each user connection on the BPX Service Node benefits from the full functionality of advanced networking features---AutoRoute, OptiClass, ForeSight, and FairShare.
The AXIS interface shelf enables a wide range of user services to be supported by the BPX Service Node. AXIS modules adapt incoming data to 53-byte ATM cells using industry-standard ATM Adaption Layers (AAL) for transport over the ATM network.
The AXIS shelf supports a wide range of services from a single platform. This enables organizations to reduce equipment costs, fully utilize trunking resources, protect their investments in existing premise equipment, and rapidly deploy new services as required. Services below 34 Mbps are provisioned on the AXIS shelf, and interfaces supported include the following:
AXIS aggregates traffic from as many as 80 T1 or E1 ports onto a single port of a multiport broadband trunk card. This high port density maximizes use of the BPX Service Node high-capacity switch fabric. Each 9-inch rack-mount shelf supports up to 80 DS1 or E1 ports or more than 2,000 64-Kbps users. AXIS has a compact footprint that minimizes the space required within central offices.
Intelligent Network Server Node Control Processor
The Intelligent Network Server (INS) node control processor provides intelligent call processing of ATM and Frame Relay switched virtual circuits, switched voice services, and dial-up access capabilities. Sophisticated interaction between call processing and signaling software and the network database enables the BPX Service Node to deliver flexible, instantaneous any-to-any connectivity. These advanced switching features enable enterprises and service providers to deploy applications including LAN internetworking, client/server and client/client computing, shared workspaces, remote access, and multimedia communications. The INS supports three key applications:
BPX Service Node Advanced Features
The StrataCom BPX Service Node advanced features deliver multiservice functionality, efficient use of bandwidth, high performance for all users, and guaranteed quality of service for all traffic types. Sophisticated routing software maximizes system reliability and therefore, service availability. Class of service features support up to 16 network-wide service classes and guarantee performance levels of each, enabling high-performance delivery of a wide range of services from data and Internet services to voice and video. ABR-based traffic management features dynamically allocate bandwidth so that multiple services can share the network simultaneously. This significantly reduces network costs while delivering higher application performance. Per-VC queuing ensures bandwidth availability to all users. Together, these advanced features enable service providers and enterprises to fully utilize network capabilities, deliver services or differentiate their services to meet a wide range of networking needs, and cost-effectively increase application performance.
The following advanced features are available with the BPX Service Node:
AutoRoute end-to-end connection management software automatically routes and reroutes virtual connections over optimal paths through the network. It keeps traffic moving over the shortest paths while guaranteeing quality of service for each connection. AutoRoute automatically reroutes virtual circuits to alternate paths in the event of a trunk or switch failure. AutoRoute also tracks resources designated to individual connections to prevent overloading of individual trunks, ensuring high levels of network reliability and availability. AutoRoute eliminates the need to manually manage virtual circuits and allocate bandwidth, reducing network operating costs.
The OptiClass class of service feature offers enterprise network managers and service providers up to 16 classes of service that can be assigned to specific connections. With OptiClass, minimum bandwidth guarantees may be assigned for each connection, ensuring that services are delivered with the appropriate quality of service required. Together with AutoRoute, OptiClass automatically ensures quality of service for each application, resulting in higher performance and throughput. With OptiClass, unused bandwidth on network trunks and ports is also made available to any connection that can use it. OptiClass also gives network managers the flexibility to easily add new services, enabling service providers to more quickly deploy new services.
ForeSight bandwidth optimization and congestion avoidance software continuously monitors trunk utilization to adjust bandwidth to all connections, proactively avoids queuing delays, and virtually eliminates cell loss. The ATM Forum ratified a rate-based, closed-loop method of traffic control, which is the basis of ForeSight. The BPX Service Node employs a full virtual source/virtual destination (VS/VD) implementation of the ATM Forum ABR standard. As a result, the BPX Service Node can improve network bandwidth utilization to up to 95 percent while delivering traffic without cell loss. This allows a service provider to deliver additional services, resell spare capacity, and scale the network without large additional capital investment. It permits enterprise network managers to significantly reduce networking costs while delivering greater network functionality and higher application performance.
FairShare is a patented per-virtual-circuit queuing and rate scheduler. It allocates bandwidth fairly among network users by providing a virtual "firewall" between connections and service classes. Unlike a shared buffer scheme, per-virtual-circuit queuing prevents one misbehaving connection from affecting the performance of others.
BPX Service Node Network Management Architecture
Cisco's StrataSphere network management provides the unique capabilities required for managing ATM WANs. While Stratm is the ASIC implementation of ATM, StrataSphere distributes the logical management intelligence throughout the network via a set of building blocks, or modules. By distributing network management functionality, service management and process automation can be tightly integrated---simplifying management of even the most complex WANs and providing a comprehensive end-to-end management solution.
The StrataSphere Modeler lets network managers read, design, modify, and analyze networks on line. With StrataSphere Modeler software, the best network topology can be quickly and easily designed, based on existing network configuration data. The StrataSphere Optimizer enables "what if" scenarios based on predefined parameters to analyze user traffic patterns, optimize for least cost, and determine minimum adequate redundancy. Optimizer software simplifies prototyping of new services and helps network managers determine how future growth will impact service usage and resource allocation.
StrataView Plus software provides powerful fault, configuration, and performance management capabilities for the BPX Service Node. A user-friendly, graphics-oriented interface running under HP OpenView and IBM NetView for AIX platforms, StrataView Plus lets network managers view the entire network at once to quickly identify and isolate network problems.
Service Management and Integration
The StrataSphere Service Agent provides network and service layer management views and control through a Simple Network Management Protocol (SNMP) proxy agent. This feature enables automated provisioning, simplifies customer network management, and provides a basis for other value-added service management solutions. The StrataSphere Statistics Agent software collects comprehensive network statistics for billing, cost allocation, performance management, and capacity planning. The Statistics Agent saves time and simplifies billing and planning. StrataSphere BILLder software lets network managers monitor network traffic flow and allocate costs. Once billing periods are defined, StrataSphere BILLder captures the data from that period and formats it in a standard or customized billing record.
BPX Service Node System Specifications
Table 219 lists BPX Service Node specifications.
Table 219 : BPX Service Node Specifications
Characteristic | Description |
---|---|
15 module slots | 2 slots reserved for redundant control and switch modules
1 slot reserved for Alarm Status Monitor (ASM) module 12 slots for general-purpose function modules |
Dimensions (H x W x D) | 22.75 x 17.72 x 27" (57.8 x 45 x 68.6 cm)
19" (48.3 cm) rack mountable |
Power requirements | -48V DC or 208/240V AC input
1400W dissipation (max) |
Crosspoint switch fabric | Switch capacity of 20 Gbps
12 800-Mbps switch ports that can support up to OC-12 cell rate Arbiter establishes up to 20 million cell connections per second |
Network interfaces | T3 (44.736 Mbps) with PLCP per TA-TY-000773
OC-3 (155.520 Mbps) with SONET framing per ANSI T1.105 E3 (34.368 Mbps) per ITU-T Rec. G.804 STM-1 (155.520 Mbps) with SDH framing per ITU-T Rec. G.708 OC12/STM-4 (622.08 Mbps), complies with SONET standards Bellcore GR-253-CORE, ANSI T1.105; complies with SDH standards ITU-T G.708 and G.709; ITU-T G.957 and G.958 |
Common network interface features | Up to 16 programmable queues for class-based or VP/VC-based queuing
Queues programmable by maximum queue depth, minimum service bandwidth, maximum service bandwidth, Cell Loss Priority (CLP) thresholds, EFCI thresholds ForeSight closed-loop, rate-based congestion management Fully-compliant ABR VS/VD implementation Explicit rate (ER) marking EFCI marking |
Broadband service interfaces | Conformance to ATM Forum Specification v3.1:
T3/DS3 UNI (44.736 Mbps) OC-3 UNI (155.520 Mbps) SONET OC-12 UNI (622 Mbps) SONET E2 UNI (34.368 Mbps) STM-1 UNI (155.520 Mbps) SDH STM-4 UNI (622 Mbps) SDH |
Optional redundancy | All components are optionally redundant to 100% system redundancy including the control processor, crosspoint switch, network interfaces, service interfaces, critical backplane signals, power supplies, power modules, and cooling fans |
Network management | Interfacing to network management is provided by SNMP connection via:
1 802.3 AUI interface for local connection to StrataView Plus 2 asynchronous control/printer ports |
Alarms, indicators, and controls | Major node alarm, minor node alarm, alarm cut-off and history indicators
Visual and audible (major and minor) relay closures provided for connection to central office alarm system, including power supply status indicators and LAN activity indicator Each interface module has a minimum of three visual indicators: Active (green), Standby (yellow), and Fail (red) |
Node synchronization | Stratum 3 clock per ATT PUB 62411
Software programmable source: internal clock, transmission line, auxiliary port to an external clock source |
AXIS Interface Shelf Specifications
Table 220 lists AXIS interface shelf specifications.
Table 220 : AXIS Specifications
Description | Feature |
---|---|
16 slots | 6 slots reserved for common control cards
10 slots available for function modules |
Dimensions
(H x W x D) |
8.75 x 17.45 x 20" (21.8 x 43.6 x 50 cm)
19" (48.3 cm) rack mountable |
Power requirement | -48 VDC or 110/220 VAC
400W Redundant power feeds |
Switching | 640 Mbps ATM cell bus |
Subscriber interfaces | Frame Relay
High-speed Frame Relay ATM Frame UNI n x T1/E1 IMA UNI T1/E1 ATM Circuit emulation ISDN Primary Rate Switched Access |
Redundancy | 1:1 optional common equipment redundancy
9:1 optional subscriber interface redundancy |
Network management | SNMP configuration and monitoring
Trivial File Transfer Protocol (TFTP) software download TFTP statistics collection |
Connection management | PVCs or SVCs |
Table 221 lists the standards that the BPX Service Node supports.
Table 221 : Standards Supported by the BPX Service Node
Standards | ATM
Physical Media Dependent (PMD) DS1 and DS3; ITU-T G.804, Bellcore TA-TSY-772, TA-TSY-773, TR-TSY-499, G.703, ANSI T1.107/107A E3; ITU-T G.705, G.804 OC3; ANSI T1/E1.2/93-020RA, Bellcore TR-NWT-000253, TR-TSY-000020, ANSI T1.105 ATM Layer, traffic management and signaling ITU-T1.362: ATM adaptation layer ITU-T1.432: Cell delineation and HEC ITU-T1.361: ATM cell format ITU-T1.371: traffic control and congestion management ITU-T1.350: Quality of Service and network performance ATM to Frame Relay ITU-T1.555: mapping ITU-T1.36X.1: FRSSCS ITU-T1.363: AAL5 ATM UNI Specification V.3.1 including: PMD ATM Layer ATM Adaptation Layers Traffic Management Interim Local Management Interface (ILMI) OA&M SVC Signaling: ATM Switched Virtual Connections ITU-T Q.2931 (DSS2) ITU-T Q.2110 (SSCOP) ITU-T Q.2130 (SSCF) ATM Forum UNI V.3.1 ATM Forum UNI V.4.0 Frame Relay ANSI T1.606 and ITU-T 1.233.1: Frame Relay service description ANSI T1.618 and ITU-T Q.922: Data Transfer Protocol ANSI T1.606 and ITU-T 1.370: Congestion Management ANSI T1.617 Annex D and ITU-T Q.933 Annex A: signaling ITU-T 1.372: NNI interface requirements Bellcore TR-TSV-1369 Frame Relay PVC exchange service Frame Relay Forum NNI implementation agreement SMDS TA-TSY-001239: generic requirements for low-speed SMDS access TR-TSY-000772: generic system requirements in support of SMDS SIG-TS-001/199: SMDS data exchange protocol |
Table 222 lists the product numbers you can use to order the BPX Service Node and the AXIS interface shelf.
Table 222 : BPX Service Node and AXIS Interface Shelf Product Numbers
Description | Product Numbers |
---|---|
BPX Products | |
BPX, 15-slot: includes BCC-32M, BCC15-BC, ASM, ASM-BC | BPX |
BPX redundant option: includes BCC-32M, BCC-BC | BPX-REDUNDANT |
BPX Trunk and Interface Card Assemblies | |
Broadband Network Interface (BNI)---3 T3 ports | BPX-BNI-3-T3/C |
Broadband Network Interface (BNI)---3 E3 ports | BPX-BNI-3-E3/B |
ATM Service Interface (ASI) card---2 T3 ports | BPX-ASI-2-T3/C |
ATM Service Interface (ASI) card---2 E3 ports | BPX-ASI-2-E3/B |
T3 back card for BNI or ASI | BPX-T3-BC |
E3 back card for BNI or ASI | BPX-E3-BC |
T3 to 6-Mbps (T2) ATM adapter with AC power supply | BPX-AT3-6M-AC |
T3 to 6-Mbps (T2) ATM adapter with DC power supply | BPX-AT3-6M-DC |
ATM Service Interface 2 port 155 Mbps | BPX-ASI-2-155/B |
Broadband Network Interface 2 port 155 Mbps | BPX-BNI-2-155/B |
Multimode fiber back card | BPX-MMF-2-BC |
Single-mode fiber back card | BPX-SMF-2-BC |
Single-mode fiber long reach back card | BPX-SMFLR-2-BC |
BPX Spares and Accessories | |
AC power option 1---single AC supply/single AC line input | BPX-AC1-1 |
AC power option 2---redundant supplies/single AC line input | BPX-AC2-1 |
AC power option 3---redundant supplies/redundant AC line input | BPX-AC2-2 |
48 VDC power input module | BPX-DC |
Chassis assembly | BPX-CH/C= |
Backplane | BPX-BP= |
Fan assembly | BPX-FAN= |
Faceplate---blank front | BPX-FP-BF= |
Faceplate---blank back | BPX-FP-BB= |
AC power supply | BPX-AC= |
AC power supply rack enclosure, 1 AC line input | BPX-AC-RACK1= |
AC power supply rack enclosure, 2 AC line inputs | BPX-AC-RACK2= |
BPX controller card, 32 MB of DRAM | BPX-BCC-32M= |
BPX controller back card | BPX-BCC-15= |
Alarm Status Monitor (ASM) | BPX-ASM= |
ASM back card | BPX-ASM-BC= |
BPX System Software | |
BPX system software license---Release (version number 720) | BPX-SW-720 |
BPX system software license---Release (version number 721) | BPX-SW-721 |
BPX system software license---Release (version number 724) | BPX-SW-724 |
BPX system software license---Release (version number 725) | BPX-SW-725 |
BPX system software license---Release (version number 7274) | BPX-SW-7274 |
BPX system software license---Release (version number 7275) | BPX-SW-7275 |
BPX system software license---Release (version number 7277) | BPX-SW-7277 |
BPX system software license---Release (version number 7281) | BPX-SW-7281 |
BPX system software license---Release (version number 7282) | BPX-SW-7282 |
BPX Feature License | |
BPX ForeSight license per 2-port T3 or E3 ASI card | BPX-FS-2 |
Configuration save and restore license per node | BPX-CSR |
Virtual trunking license per node | BPX-VT |
Multiuser configuration sessions per node | BPX-MUC |
Priority bumping software license per node | BPX-PRBUMP |
BPX Power Cords | |
BPX power cord with NEMA L6-20 twistlock plug | PWRCD-NA |
BPX power cord with CEE 7/7 plug | PWRCD-FU |
BPX power cord with AS 3112 plug | PWRCD-ANZ |
BPX power cord with BS 1363 plug | PWRCD-GBI |
BPX power cord with CDI 23 16/V11 plug | PWRCD-IT |
AXIS Interface Shelf | |
AXIS, 16-slot, rack mount, ASC, ASC-BC | AXIS |
AXIS Core Cards | |
Broadband Network Module---1 T3 port | AX-BNM-T3 |
Broadband Network Module---1 E3 port | AX-BNM-E3 |
BNM back card with DB15 clock connector | AX-T3E3-D-BC |
BNM back card with BNC clock connector | AX-T3E3-B-BC |
Service redundancy module | AX-SRM-T1E1 |
AXIS Service Modules | |
Frame service module, 4 fractional T1 ports | AX-FRSM-4T1 |
Frame service module, 4 channelized T1 ports | AX-FRSM-4T1-C |
Frame service module, 4 fractional E1 ports | AX-FRSM-4E1 |
Frame service module, 4 channelized E1 ports | AX-FRSM-4E1-C |
Circuit emulation service module, 4 T1 ports | AX-CESM-4T1 |
Circuit emulation service module, 4 E1 ports | AX-CESM-4E1 |
ATM UNI service module, 4 T1 ports | AX-AUSM-4T1 |
ATM UNI service module, 4 E1 ports | AX-AUSM-4E1 |
AIMUX trunking module, T3 to T1s | AX-AIMNM-T3-T1 |
AIMUX trunking module, E3 to E1s | AX-AIMNM-E3-E1 |
4-port T1 back card for service module, DB15 connectors | AX-DB15-4T1-BC |
4-port E1 back card for service module, DB15 connectors | AX-DB15-4E1-BC |
4-port E1 back card for service module, BNC connectors | AX-BNC-4E1-BC |
8-port T1, 1-port T3 back card for AIMUX trunking module | AX-RJ48-T3T1 |
8-port E1, 1-port E3 back card for AIMUX trunking module | AX-RJ48-E3E1 |
8-port E1, 1-port E3 back card for AIMUX trunking module | AX-SMB-E3E1 |
Redundancy back card for DB15-4T1-BC based service module | AX-R-DB15-4T1 |
Redundancy back card for DB15-4E1-BC based service module | AX-R-DB15-4E1 |
Redundancy back card for BNC-4E1-BC based service module | AX-R-BNC-4E1 |
AXIS Spares and Accessories | |
AXIS DC power entry module | AX-DC |
AC power option 1---1 875W, 1 AC input | AX-AC1-1 |
AC power option 2---2 875W, 1 AC input | AX-AC2-1 |
AC power option 3---2 875W, 2 AC input | AX-AC2-2 |
875W AC power supply | AX-PS-AC |
AXIS shelf contoller card | AX-ASC= |
AXIS shelf controller card back card | AX-ASC-BC= |
AC power supply rack enclosure, 1 AC line input | AX-AC-RACK1= |
AC power supply rack enclosure, 2 AC line inputs | AX-AC-RACK2= |
Short cable, AC shelf to AXIS | AX-CAB-AC-SHRT |
Long cable, AC shelf to AXIS | AX-CAB-AC-LONG |
AXIS Cooling Options | |
AXIS two-shelf cooling | AX-COOL2 |
AXIS additional two-shelf cooling | AX-BOOST2 |
AXIS Firmware | |
Firmware media kit for use with AXIS | AX-FW-2113 |
AXIS Software/Feature Licenses | |
AXIS ForeSight license for each frame service module | AX-FS-4 |
AXIS FUNI license for each frame service module | AX-FUNI-4 |
AXIS ABR ForeSight license for each 4-port ATM service module | AX-ABR-4 |
AXIS AIMUX license for each 8-port ATM service module | AX-AIMUX-8 |
AXIS service redundancy license for each SRM-T1E1 card | AX-SR-8 |
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