Cisco ASR 1000 Configuration Guide

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Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide
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Chapter 2 SIP and SPA Product Overview
Introduction to SIPs and SPAs
Shared Port Adapters
The following list describes some of the general characteristics of a SPA:
• A SPA is a modular type of port adapter that inserts into a subslot of a compatible SIP carrier card
to provide network connectivity and increased interface port density. A SIP can hold one or more
SPAs, depending on the SIP type.
• Some SPAs provide services rather than network connectivity, and can be inserted into subslots of
a compatible SIP. For example, the Cisco WebEx Node for ASR 1000 Series, which provides
provides WebEx meeting services, and the DSP SPA which provides voice transcoding and
transrating capabilities.
• SPAs are available in the following sizes, as shown in Figure 2-1 and Figure 2-2:
– Single-height SPA—Inserts into one SIP subslot.
– Double-height SPA—Inserts into two single, vertically aligned SIP subslots.
Figure 2-1 Single-Height and Double-Height SPA Sizes
Figure 2-2 Horizontal and Vertical Chassis Slot Orientation for SPAs
Caution SIP subslot 0 is not available on the Cisco ASR 1002 Router as that is the slot occupied by the integrated
Route Processor with native Gigabit Ethernet ports.
• Each SPA provides a certain number of connectors, or ports, that are the interfaces to one or more
networks. These interfaces can be individually configured using the Cisco IOS command-line
interface (CLI).
Single-height SPA
Double-height SPA
Front of SIP
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SPA 0 SPA 1
SPA 2 SPA 3
Front of SIP, horizontal chassis slots
SPA 0 SPA 1 SPA 2 SPA 3
Vertical slot orientation
SPA 0 SPA 1
Double-height SPA
SPA 3
SPA 1
Double-height SPA
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SPA 0
SPA 2

Cisco ASR 1000 Specifications

General

Brand	Cisco
Model	ASR 1000
Category	Network Router
Language	English