Table 26: 4-Port OC-3/STM-1 POS SPA LEDs
MeaningStateColorLED Label
SONET controller is shut down.OffOffC/A
Port is enabled by software, and there is a valid SONET signal without any alarms.OnGreen
Port is enabled by software, and there is at least one alarm.OnAmber
Interface is shut down.
OffOffA/L
Port is enabled by software, and loopback is off.OnGreen
Port is enabled by software, and loopback is on.OnAmber
SPA power is off.
OffOffSTATUS
SPA is ready and operational.OnGreen
SPA power is on and good, and the SPA is being configured.OnAmber
4-Port OC-3/STM-1 POS SPA Interface Specifications
The framer processes incoming and outgoing SONET or SDH frames. The framer operates at OC-3c/STM-1
line rates (155.52 Mbps).
Packet data is transported with a user-configured encapsulation (such as Point-to-Point Protocol [PPP]) and
is mapped into the STS-3c/STM-1 frame.
The 4-Port OC-3/STM-1 POS SPA interface complies with the following RFCs:
• RFC 1662, PPP in HDLC-like Framing
• RFC 2427, Multiprotocol Interconnect over Frame Relay
• RFC 2615, PPP over SONET/SDH
4-Port OC-3/STM-1 POS SPA Optical Transceiver Modules and Cables
The 4-Port OC-3/STM-1 POS 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 the below
figure).
Cisco Systems qualifies the optics that are approved for use with its SPAs. The 4-Port OC-3/STM-1 POS
SPA supports the following types of optical transceiver modules:
• Multimode (MM) SFP module—SFP-OC3-MM
• Short-reach (SR) SFP module—SFP-OC3-SR
• Intermediate-reach (IR) SFP module (15 km)—SFP-OC3-IR1
• Long-reach (LR) SFP module (40 km)—SFP-OC3-LR1
• Long-reach (LR) SFP module (80 km)—SFP-OC3-LR2
Cisco ASR 9000 Series Aggregation Services Router SIP and SPA Hardware Installation Guide
39
Overview: Cisco ASR 9000 Series Router Shared Port Adapters
4-Port OC-3/STM-1 POS SPA Interface Specifications
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