Bpx Switch Operation; The Bpx Switch With Mgx 8220, Mgx 8230, And Mgx 8250 Shelves - Cisco BPX 8620 Installation And Configuration Manual

BPX Switch Operation

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BPX Switch Operation
With the BCC-4 card, the BPX switch employs a nonblocking crosspoint switch matrix for cell switching
that can operate at up to 19.2 Gbps peak. The switch matrix can establish up to 20 million point-to-point
connections per second between ports.
The BXM cards support egress at up to 1600 Mbps and ingress at up to 800 Mbps. The enhanced egress
rate enhances operations, such as multicast.
Access to and from the crosspoint switch matrix on the BCC is through multiport network and user
access cards. It is designed to easily meet current requirements with scalability to higher capacity for
future growth.
A BPX switch shelf is a self-contained chassis that may be rack-mounted in a standard 19-inch rack or
open enclosure.
All control functions, switching matrix, backplane connections, and power supplies are redundant, and
nondisruptive diagnostics continuously monitor system operation to detect any system or transmission
failure. Hot-standby hardware and alternate routing capability combine to provide maximum system
availability.

The BPX Switch with MGX 8220, MGX 8230, and MGX 8250 Shelves

Many network locations have increasing bandwidth requirements due to emerging applications and the
confluence of voice, data, and video digital communications. To meet these requirements, you can
overlay your existing narrowband networks with a backbone of BPX switches to utilize the high-speed
connectivity of the BPX switch operating at up to 19.2 Gbps with its T3/E3/OC-3/OC-12 network and
service interfaces.
The BPX switch service interfaces include BXM ports on the BPX switch and service ports on
MGX 8220, MGX 8230, and MGX 8250 shelves.
The MGX 8220 shelves may be colocated in the same cabinet as the BPX switch, providing economical
port concentration for T1/E1 Frame Relay, T1/E1 ATM, CES, and FUNI connections. Ten service
module slots are supported for the MGX 8220.
As a BPX feeder, the MGX 8230 concentrates user ATM, Frame Relay (T1/E1 and T3/E3), T1/E1 ATM,
and T1/E1 CES interfaces. Eight service module slots are supported for the MGX 8230.
Cisco BPX 8600 Series Installation and Configuration
1-6
The IPX switch
The Extended Services Processor (ESP)
However, PNNI is available on the BPX through the Service Expansion Shelf (SES) PNNI. For a
brief description, see Chapter 2, "BPX Switch Physical Overview," Service Expansion Shelf PNNI
section.
VSI 1.0
The FastPAD
The FTM card
The BTM card
No support for 3810
Chapter 1 The BPX Switch: Functional Overview
Release 9.3.30, Part Number 78-12907-01 Rev. E0, May 2005