Cisco 7304 Installation Guide download pdf (Page 15)

CHAPTER

1-1

Cisco 7304 MSC and SPA Hardware Configuration Guide

OL-4681-01

MSCs and SPA Product Overview

This chapter provides an introduction to the modular services cards (MSCs) and shared port

adapters (SPAs). It contains the following sections:

• Introduction to MSCs and SPAs, page 1-1

• MSC and SPA Compatibility, page 1-2

• Modular Optics Compatibility, page 1-3

For software details for the specific MSCs and SPAs that are supported on the Cisco 7304 router, refer

to the companion publication, Cisco 7304 Router Modular Services Card and Shared Port Adapter

Software Configuration Guide.

Introduction to MSCs and SPAs

MSCs and SPAs are a carrier card and port adapter architecture to increase modularity, flexibility, and

density across Cisco Systems routers for network connectivity. This section describes the MSCs and

SPAs and provides some guidelines for their use.

Modular Service Cards

The following lists describes some of the general characteristics of an MSC:

• An MSC is a carrier card that inserts into a router slot like a line card. It provides no network

connectivity on its own.

Note The MSC-100 is the only carrier card currently available for SPAs on the Cisco 7304 router.

However, SPAs can be inserted into other carrier cards on other router platforms. For

information on carrier cards on other platforms, see the documentation for those platforms.

• The only MSC currently available is the MSC-100, which contains two subslots used to house SPAs.

The SPA provides interface ports for network connectivity.

• During normal operation, the MSC should reside in the router fully populated either with functional

SPAs in all subslots, or with a SPA blank filler plate inserted in any empty subslots.

• An MSC supports online insertion and removal (OIR) with SPAs inserted in its subslots. SPAs also

can be inserted or removed independently from the MSC.

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Cisco 7304 Installation Guide Page 15