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C H A P T E R
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SIP and SPA Product Overview
This chapter provides an introduction to SPA interface processors (SIPs)and shared port adapters (SPAs).
It includes the following sections:
For more hardware details for the specific SIPs and SPAs that are supported on the Cisco ASR 1000 Series
Routers, refer to the companion publication, Cisco Aggregation Services Router 1000 Series SIP and SPA
Hardware Installation Guide.
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Introduction to SIPs and SPAs, page 15
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SIP and SPA Compatibility, page 17
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Modular Optics Compatibility, page 20
Introduction to SIPs and SPAs
Cisco Aggregation Services Router 1000 Series SIPs and SPAs are a carrier card and port adapter architecture
that increases modularity, flexibility, and density across Cisco 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:
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A SIP is a carrier card that inserts into a router slot like a line card. It provides no network connectivity
on its own.
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A SIP contains one or more subslots, which are used to house one or more SPAs. The SPA provides
interface ports for network connectivity.
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During normal operation, the SIP should reside in the router fully populated either with functional SPAs
in all subslots, or with a blank filler plate (SPA-BLANK=) inserted in all empty subslots.
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SIPs support online insertion and removal (OIR) with SPAs inserted in their subslots. SPAs also support
OIR and can be inserted or removed independently from the SIP.
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide, Cisco IOS XE
Everest 16.5
OL-14127-17
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