Cisco XR 12000 Specifications download pdf (Page 21)

CHAPTER

1-1

Cisco XR 12000 Series Router SIP and SPA Software Configuration Guide, Release 3.2

Release 3.2, OL-6396-01, Rev.A1 January 9, 2006

SIP and SPA Product Overview

This chapter provides an introduction to modular services cards (SIPs) and shared port adapters (SPAs).

It includes the following sections:

• Introduction to SIPs and SPAs, page 1-1

• SIP and SPA Compatibility, page 1-3

• SPA Optics Compatibility, page 1-3

• SPA Interface Addresses on Cisco XR 12000 Series Routers, page 1-4

• SIP Software and Hardware Compatibility, page 1-5

For more hardware details for the specific SIP and SPAs that are supported on the Cisco XR 12000 Series

Router, refer to the companion publication, Cisco XR 12000 Series Router SIP and SPA Hardware

Installation Guide, Release 3.2.

Introduction to SIPs and SPAs

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

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

and provides some guidelines for their use.

SPA Interface Processors

The following list describes some of the general characteristics of a SIP:

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

connectivity on its own.

• A SIP can contain two or more subslots, which are used to house one or more SPAs. The SPA

provides interface ports for network connectivity.

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

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

• SIPs support online insertion and removal (OIR) while SPAs are inserted in their subslots.

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Cisco XR 12000 Specifications Page 21