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Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Hardware Installation Guide
OL-14126-12
Chapter 3 Overview: Cisco ASR 1000 Series Aggregation Services Routers SPAs
2-Port, 4-Port, and 8-Port OC-12c/STM-4 POS SPA Overview
2-Port, 4-Port, and 8-Port OC-12c/STM-4 POS SPA Overview
The 2-Port, 4-Port, and 8-Port OC-12c/STM-4 Multirate POS SPA is a single-height SPA that installs
into one SIP subslot. For the OC-12 SPAs, any given channel can be configured as either OC-3 or OC-12,
so the per-port bandwidth can be either 155.52 Mbps or 622.08 Mbps respectively, depending on the
customer configuration.
Note When SFP modules are replaced, the SPA interface retains any previously-defined configurations. These
configurations include settings for IP address, clock source, loopback, CRC, and POS flags.
The 8-port OC-12c/STM-4 POS SPA is a full-rate SPA; therefore, it can only be installed in subslots 1
or 2 of the SIP. The 2-Port OC-12c/STM-4 POS and 4-Port OC-12c/STM-4 POS SPAs are half-rate
SPAs.
The following sections describe the 2-Port, 4-Port, and 8-Port OC-12c/STM-4 Multirate POS SPA:
• 2-Port, 4-Port, and 8-Port OC-12c/STM-4 Multirate POS SPA LEDs, page 3-48
• 2-Port, 4-Port, and 8-Port OC-12c/STM-4 Multirate POS SPA Interface Specifications, page 3-49
• 2-Port, 4-Port, and 8-Port OC-12c/STM-4 Multirate POS SPA Optical Transceiver Modules,
Connectors, and Cables, page 3-50
2-Port, 4-Port, and 8-Port OC-12c/STM-4 Multirate POS SPA LEDs
The 2-Port, 4-Port, and 8-Port OC-12c/STM-4 Multirate POS SPA has three LEDs: two LEDs for each
port on the SPA, and one STATUS LED as shown in Figure 3-32.
Note Three different faceplates exist for the 2-Port, 4-Port, and 8-Port OC-12c/STM-4 Multirate POS SPAs.
They each contain the same LEDs and the number of ports are 2, 4, and 8 respectively.
RX overload OC-12 MM: –6 dBm
OC-12 SR: –8 dBm
OC-12 IR-1: –8 dBm
OC-12 LR-1: –8 dBm
OC-12 LR-2: –8 dBm
Maximum receiver power damage OC-12 MM: 5 dBm
OC-12 SR: 5 dBm
OC-12 IR-1: 5 dBm
OC-12 LR-1: 5 dBm
OC-12 LR-2: 5 dBm
Table 3-28 OC-12 Specifications (continued)
Specification Description
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