Cisco BPX 8620 Installation And Configuration Manual page 54

The BPX 8600 Series
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The following are supported by the BPX 8650:
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BPX 8680
The BPX 8680 universal service switch is a scalable IP+ATM WAN edge switch that combines the
benefits of Cisco IOS® IP with the extensive queuing, buffering, scalability, and quality-of-service
(QoS) capabilities provided by the BPX 8600 and MGX 8800 series platforms.
The BPX 8680 switch incorporates a modular, multishelf architecture that scales from small sites to very
large sites and enables service providers to meet the rapidly growing demand for IP applications while
cost-effectively delivering today's services.
The BPX 8680 consists of one or more MGX 8200 series connected as feeders to a BPX 8620. Designed
for very large installations, the BPX 8680 can scale to 16,000 DS1s by adding up to 16 MGX 8200 series
concentrator shelves while still being managed as a single node.
BPX 8680-IP
The BPX 8680-IP scalable Layer 2/Layer 3 WAN solution integrating the proven multiservice switching
technology of the Cisco BPX 8650 switch with the flexibility and scalability of the Cisco MGX 8200
series. The MGX 8200 series switch serves as an edge concentrator to the BPX 8650, which employs the
BPX 8600 series switch modular, multishelf architecture to enable scalability. The BPX 8650 switch
includes a Cisco 7204 label switch controller (LSC) and supports multiprotocol label switching (MPLS)
for New World integrated infrastructures.
Cisco BPX 8600 Series Installation and Configuration
1-4
Layer 2 virtual circuit switching advantages
Layer 2/Layer 3 interoperability
Premium IP services—Specifies the Internet, intranets, extranets, and IP VPNs, which are now
available over an ATM infrastructure.
Value-added services, such as content hosting, voice over IP, and video, as well as data-managed
services
ATM Services—Specifies that standard-based ATM interfaces are offer broadband and narrowband
interconnection for routers, ATM LANs, and other ATM access devices
The ATM Forum's available bit rate (ABR) virtual source/virtual destination (VS/VD) traffic
management capabilities
Constant bit rate (CBR)
Real time variable bit rate (rt-VBR)
Non real-time VBR (nrt-VBR)
Unspecified bit rate (UBR)
Chapter 1 The BPX Switch: Functional Overview
Release 9.3.30, Part Number 78-12907-01 Rev. E0, May 2005