Chapter 1 The Bpx Switch: Functional Overview; Bpx 8620 - Cisco BPX-BXM-155-8DX Installation And Configuration Manual

The BPX 8600 Series
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BPX 8620

The Cisco BPX 8620 switch is a scalable, standards-compliant unit, fully compatible with:
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The BPX multishelf architecture integrates both IP and ATM services, thereby enabling you to deploy
the industry's widest range of value-added services. This architecture offerslow-cost entry points for
small sites up to unprecedented port density and scalability for the very largest sites. Finally, it supports
both broadband services and narrowband services within a single platform.
The architecture supports both the broadband BPX switch and up to 16 edge concentrator shelves. This
scalability results in full utilization of broadband trunks and allows the BPX switch to be expanded
incrementally to handle an almost unlimited number of subscribers.
The edge concentrators terminate traffic from a variety of interfaces, such as IP, Frame Relay, ATM,
and circuit emulation, and adapt non-ATM traffic into ATM cells. This traffic is aggregated and sent to
the BPX switch where it is switched on high-speed ATM links. This aggregation on a single platform
maximizes the density of broadband and narrowband ports. High-density aggregation of low-speed
services also optimizes the efficiency of the high-speed switching matrix and broadband card slots.
The multishelf view is a "logical" view. Physically, the edge concentrator shelves may be co-located
with the BPX switch or they may be located remotely. The connection between a shelf and the BPX
switch is a high-speed, optionally redundant ATM link.
The BPX switch consists of the BPX shelf with fifteen card slots that may be co-located with the MGX
8220 or MGX 8800 and Service Expansion Shelf (SES) as required.
Three of the slots on the BPX switch shelf are reserved for common equipment cards. The other twelve
are general purpose slots used for network interface cards or service interface cards. The cards are
provided in sets, consisting of a front card and its associated back card.
The BPX shelf can be mounted in a rack enclosure that provides mounting for a co-located SES and the
MGX 8220 or MGX 8800 interface shelves.
Cisco BPX 8600 Series Installation and Configuration
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BPX 8680 universal service node
BPX 8680-IP (BPX + MGX 8850 + 7204 LSC)
Cisco MGX™ 8800 series wide area edge switch
Cisco MGX 8220 edge concentrator
Cisco IGX™ 8400 series wide-area switch
Cisco Service Expansion Shelf
Chapter 1 The BPX Switch: Functional Overview
Release 9.3.0, Part Number 78-10674-01 Rev. D0, July 2001