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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
2-Port Gigabit Synchronous Ethernet SPA Overview
Power Supply
The 2-Gigabit Synchronous Ethernet SPA extracts 18.854 watts maximum. The actual Lab
measurements at room temperature result in only around 10.5 watts maximum.
Standards Compliance
The 2-Port Gigabit Synchronous Ethernet SPA complies with these standard specifications:
• ITU-T G.8261 (2008) specifications for SyncE support on ethernet interfaces.
• ITU-T G.8262 (OPTIONS 1 AND 2) for platform timing support and performance.
• IETF TICTOC telecom profile support for performance.
• ITU-T G.8261, G.8262, G.823, G.824, G.825, O.171, and O.172 for clock jitter and wander
specifications.
2-Port Gigabit Synchronous Ethernet SPA Cables and Connectors
SFP Optics Module
The 2-Port Gigabit Synchronous Ethernet SPA uses a small form-factor pluggable (SFP) optical
transceiver module installed in each port.
Figure 3-21 SFP Optics Module
Long-range SFP optical transceiver modules (for long-reach configurations) cannot be connected
back-to-back without using an attenuator between the two of them.
IEEE 1588v2 Yes
NTPv4 Yes
Specification Description
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