Specifications

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Cisco 7500 Series Installation and Configuration Guide

OL-5008-03 B0

Chapter 1 Cisco 7500 Series Product Overview

Terms and Acronyms

Following is a list of acronyms, initializations, and terms that identify the Cisco 7500 series system

components and features:

• AIP—Asynchronous Transfer Mode (ATM) Interface Processor.

• Backplane—Single or dual system bus to which Cisco interface processors and system processors

attach within a Cisco 7500 series router.

• Card cage—Assembly in which the backplane is mounted.

• CIP2—Channel Interface Processor.

• CT3IP—Channelized T3 Interface Processor.

• CxBus—Cisco Extended Bus, the 533-megabit-per-second (Mbps) data bus in the Cisco 7000 series

routers.

• CyBus—Cisco Extended Bus, the 1.067-gigabit-per-second (Gbps) data bus in the Cisco 7500 series

routers; the Cisco 7505 has one CyBus; the Cisco 7507, Cisco 7507-MX, Cisco 7513, and the Cisco

7513-MX have two CyBuses (called the dual CyBus) for an aggregate bandwidth of 2.134 Gbps. The

Cisco 7576 has two dual CyBuses on a single split backplane creating two independent routers. Each

Cisco 7576 independent router has an aggregate bandwidth of 2.134 Gbps. (Interface processors

designed for the CxBus work with the CyBus.)

• dBus—Diagnostic bus for Route Switch Processor diagnostic and control access, system discovery

and control, microcode download, and fault diagnosis for all processors connected to the CyBus.

• DIMM—Dual in-line memory module.

• DRAM—Dynamic random-access memory.

• EIP—Ethernet Interface Processor.

• FEIP—Fast Ethernet Interface Processor.

• FIP—FDDI Interface Processor.

• FSIP—Fast Serial Interface Processor.

• FRU—Field-replaceable unit, defined as any spare part that requires replacement by a

Cisco-certified service provider.

• Gbps—Gigabits per second.

• HSA—High System Availability.

• HIP— HSSI Interface Processor.

• Interface processor—Printed circuit card attached to a metal carrier that provides the electrical

interfaces used by the Cisco 7500 series routers.

• Mbps—Megabits per second.

• MIP—MultiChannel Interface Processor.

• NVRAM—Nonvolatile random-access memory.

• POSIP—Packet over OC-3 Interface Processor.

• Processor modules—All interface processors and main system processors used in the Cisco 7500

series routers.

• RSP—Route Switch Processor; the main system processor. In this publication, the term RSP

includes all RSP models (differences between RSP models are clearly noted).

• RSP2—Specific main system RSP for the Cisco 7505.