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Cisco CRS-1 Carrier Routing System SIP and SPA Hardware Installation Guide
OL-17439-01
Chapter 3 Overview: Cisco CRS-1 Shared Port Adapters
2-Port and 4-Port OC-48c/STM-16 POS/RPR SPA Overview
Table 3-10
describes the 2-Port and 4-Port OC-48c/STM-16 POS/RPR SPA LEDs.
2-Port and 4-Port OC-48c/STM-16 POS/RPR SPA Interface Specifications
The physical layer interface for the 2-Port and 4-Port OC-48c/STM-16 POS/RPR SPA is Optical
Carrier-48 (OC-48), which provides SONET and SDH network connectivity with a per-port bandwidth
of 2.488 Gbps.
Each port on the 2-Port and 4-Port OC-48c/STM-16 POS/RPR SPA has one duplex LC-type receptacle
that allows connection to single-mode optical fiber.
Note
For Cisco IOS XR Software Release 3.8.0, the 2-Port and 4-Port OC-48c/STM-16 POS/RPR SPA
supports Dynamic Packet Transport (DPT) feature. Cisco DPT family of products delivers scalable
Internet service, reliable IP-aware optical transport, and simplified network operations. The Spatial
Reuse Protocol (SRP) is a MAC-layer protocol developed by Cisco and is used in conjunction with Cisco
DPT products, which utilizes a pair of counter-rotating rings in an optimum fashion to provide improved
bandwidth utilization over an equivalent SONET network.
Table 3-10
2-Port and 4-Port OC-48c/STM-16 POS/RPR SPA LEDs
LED Label
Color
State
Meaning
PTH
Off
Off
Port is not in pass-through mode.
G
r
een
On
Port is in pass-through mode.
CAR
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.
Amber
Flashing
Port is enabled by software, and there is a side
mismatch.
PRT
Off
Off
Port is not wrapped or steering.
Green
On
A node on the ring is wrapped.
Green
Flashing
A node on the ring is steering.
Amber
On
Port is locally wrapped.
Amber
Flashing
Port is locally steering.
ACT
Off
Off
Port is not enabled by software.
Green
On
Port is enabled by software, and loopback is off.
Amber
On
Port is enabled by software, and 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 the SPA is being
configured.