Cisco CRS-1 - Carrier Routing System Router Hardware Installation Guide

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Cisco CRS-1 Carrier Routing System SIP and SPA Hardware Installation Guide
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Chapter 3 Overview: Cisco CRS-1 Shared Port Adapters
4-Port OC-3c/STM-1 POS SPA Overview
4-Port OC-3c/STM-1 POS SPA Overview
The 4-Port OC-3c/STM-1 POS SPA is a single-height SPA that installs into one SIP subslot. The
OC-3c/STM-1 POS SPA with small form-factor pluggable (SFP) optical transceiver modules provides
SONET and SDH network connectivity with a per-port bandwidth of 155.52 Mbps. The 4-Port
OC-3c/STM-1 POS SPA operates at quarter rate.
Note When SFP modules are replaced, the SPA interface retains any previously defined configurations. These
configurations include settings for IP address, clock source, loopback, Cyclic Redundancy Check
(CRC), and POS flags.
For more information about SPA bandwidth, see the “Bandwidth Oversubscription” section in this
chapter. For more information about SPAs and their compatibility with SIPs and modular optics, see the
“SIP and SPA Product Overview” chapter in this guide.
The following sections describe the 4-Port OC-3c/STM-1 POS SPA:
• 4-Port OC-3c/STM-1 POS SPA LEDs, page 3-10
• 4-Port OC-3c/STM-1 POS SPA Interface Specifications, page 3-11
• 4-Port OC-3c/STM-1 POS SPA Optical Transceiver Modules and Cables, page 3-11
4-Port OC-3c/STM-1 POS SPA LEDs
The 4-Port OC-3c/STM-1 POS SPA has three types of LEDs: two LEDs for each port on the SPA and
one STATUS LED. Figure 3-8 sho
ws the 4-Port OC-3c/STM-1 POS SPA.
Figure 3-8 4-Port OC-3c/STM-1 POS SPA Faceplate
1 C/A (Carrier/Alarm) LED 3 STATUS LED
2 A/L (Active/Loopback) LED
STATUS
0
1
2
3
A/L
C/A
A/L
C/A
A/L
C/A
A/L
C/A
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Cisco CRS-1 - Carrier Routing System Router Specifications

General

Brand	Cisco
Model	CRS-1 - Carrier Routing System Router
Category	Network Router
Language	English