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Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Hardware Installation Guide
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Chapter 3 Overview: Cisco ASR 1000 Series Aggregation Services Routers SPAs
1-Port Channelized OC-12/STM-4 SPA Overview
1-Port Channelized OC-12/STM-4 SPA Interface Specifications
The framer processes incoming and outgoing SONET or SDH frames. The framer operates at
OC-12/STM-4 line rates (622.08 Mbps), and supports channelization from OC-12 down to DS0 line rates.
Packet data is transported with a user-configured encapsulation (such as Point-to-Point Protocol [PPP])
and is mapped into the STS-12/STM-4 frame.
The 1-Port Channelized OC-12/STM-4 SPA interface is compliant with RFC 1619, PPP over
SONET/SDH, and RFC 1662, PPP in HDLC-like Framing. The 1-Port Channelized OC-12/STM-4 SPA
also provides support for SNMP v1 agent (RFC 1155–1157), and Management Information Base (MIB)
II (RFC 1213).
1-Port Channelized OC-12/STM-4 SPA Cables and Connectors
The 1-Port Channelized OC-12/STM-4 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 3-47).
Table 3-43 1-Port Channelized OC-12/STM-4 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 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.
Green On Port is enabled by software, loopback is off.
Amber On Port is enabled by software, loopback is on.
STATUS Off Off SPA power is off.
Green On SPA is ready and operational.
Amber On SPA power is on and good, and SPA is being configured.
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