3-5
Cisco CRS-1 Carrier Routing System SIP and SPA Hardware Installation Guide
OL-17439-01
Chapter 3 Overview: Cisco CRS-1 Shared Port Adapters
1-Port and 3-Port Clear Channel OC-3 ATM SPA Overview
Figure 3-2 3-Port Clear Channel OC-3 ATM SPA Faceplate
The 1-Port and 3-Port Clear Channel OC-3 ATM SPA LEDs are described in Table 3-3.
1-Port and 3-Port Clear Channel OC-3 ATM SPA Interface Specifications
The physical layer interface for the 1-Port and 3-Port Clear Channel OC-3 ATM SPA is Optical Carrier-3
(OC-3), and the data link layer is designed to comply with ATM specifications. The 1-Port and 3-Port
Clear Channel OC-3 ATM SPA provides up to one and three 155-Mbps OC-3 network interfaces,
respectively, for all supported platforms.
Each SPA port accepts an SFP module wi
th a duplex LC-type receptacle that allows connection to
single-mode or multimode optical fiber.
1-Port and 3-Port Clear Channel OC-3 ATM SPA Cables and Connectors
The 1-Port and 3-Port Clear Channel OC-3 ATM SPA uses a small form-factor pluggable (SFP) optical
transceiver module installed in each port for SONET and SDH single-mode and multimode optical fiber
connection (see Figure 3-3).
1 C/A (Carrier/Alarm) LED 3 STATUS LED
2 A/L (Active Loopback) LED
STAT U S
A/L
C/A
Port 0
Port 1
Port 2
SPA-3XOC3-ATM-V2
270697
0
1
2
31 2
Ta b l e 3-3 1-Port and 3-Port Clear Channel OC-3 ATM SPA LEDs
LED Label Color State Meaning
C/A Off Off Port is not enabled by software.
Green On Port is enabled by softw
are, and there is a valid SONET signal
without any alarms.
Amber On Port is enabled by softw
are, and there is at least one alarm.
A/L Off Off Port is not enabled by software.
Green On Port is enabled by softw
are, and loopback is off.
Amber On Port is enabled by softw
are, and loopback is on.
STATUS Off Off SPA power is off.
Amber On SPA power is on and good, and SPA is being configured.
Green On SPA is ready and operational.
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