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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 OC-12/STM-4 POS SPA Overview
The 1-Port OC-12/STM-4 POS SPA LEDs are described in
1-Port OC-12/STM-4 POS 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).
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 OC-12/STM-4 POS SPA interface is compliant with the following RFCs:
•
RFC 1619,
PPP over SONET/SDH
•
RFC 1662,
PPP in HDLC-like Framing
The 1-Port OC-12/STM-4 POS SPA also provides support for SNMP v1 agent (RFC 1155–1157) and
RFC 1213:
•
RFC 1155,
Structure and Identification of Management Information for TCP/IP-based Internets
•
RFC 1156,
Management Information Base for Network Management of TCP/IP-Based Internets
•
RFC 1157,
Simple Network Management Protocol (SNMP)
•
RFC 1213,
Management Information Base (MIB) for Network Management of TCP/IP-Based
Internets:MIB II
.
1-Port OC-12/STM-4 POS SPA SFP Optical Transceiver Modules and Cables
The 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
).
1
C/A (Carrier/Alarm) LED
3
STATUS LED
2
A/L (Active Loopback) LED
Table 2-38
1-Port OC-12/STM-4 POS 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.
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; SPA is being configured.
