2-68
Cisco XR 12000 Series Router SIP and SPA Hardware Installation Guide
OL-17438-04
Chapter 2 Overview: Cisco XR 12000 Series Router Shared Port Adapters
1-Port and 3-Port Clear Channel OC-3 ATM SPA Overview
1-Port and 3-Port Clear Channel OC-3 ATM SPA Overview
The 1-Port and 3-Port Clear Channel OC-3 ATM SPA is a single-height SPA that installs into one SIP
subslot. The Clear Channel OC-3 ATM 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.
For more information about SPA bandwidth, see the “Bandwidth Oversubscription” section in this
chapter.
The following sections describe the 1-Port and 3-Port Clear Channel OC-3 ATM SPA:
• 1-Port and 3-Port Clear Channel OC-3 ATM SPA LEDs, page 2-68
• 1-Port and 3-Port Clear Channel OC-3 ATM SPA Interface Specifications, page 2-69
• 1-Port and 3-Port Clear Channel OC-3 ATM SPA Cables and Connectors, page 2-69
1-Port and 3-Port Clear Channel OC-3 ATM SPA LEDs
The 1-Port and 3-Port Clear Channel OC-3 ATM SPA has three types of LEDs. There are two LEDs for
each port on the SPA, and one STATUS LED. Figure 2-49 shows an example of these LEDs on a 3-Port
Clear Channel OC-3 ATM SPA.
Figure 2-49 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 2-44.
1 C/A (Carrier/Alarm) LED 3 STATUS LED
2 A/L (Active Loopback) LED
STATUS
A/L
C/A
Port 0
Port 1
Port 2
SPA-3XOC3-ATM-V2
270697
0
1
2
31 2
Table 2-44 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 software, and there is a valid SONET signal
without any alarms.
Amber On Port is enabled by software, and there is at least one alarm.
A/L Off Off Port is not enabled by software.
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