Cisco 7600 SIP 200 Hardware Installation Guide - Page 106

2-Port Gigabit Synchronous Ethernet SPA Overview Chapter 3 Overview: Cisco 7600 Series Router Shared Port Adapters 2-Port Gigabit Synchronous Ethernet SPA hardware supports IEEE1588v2, either as a client or server. The 2-Port Gigabit Synchronous Ethernet SPA has these hardware capabilities to support the 1588v2 protocol stack: • Classification and forwarding of 1588v2 protocol packets. • Hardware time stamping. Table 3-34 Note The 2-Port Gigabit Synchronous Ethernet SPA hardware is the same for all configurations of the product. Table 3-34 describes key interface specifications on the 2-Port Gigabit Synchronous Ethernet SPA. Interface Specification for 2-Port Gigabit Synchronous Ethernet SPA Specification Synchronous Ethernet support Interface Type and Density Local Timing Interfaces Local Timing Frequency BITS Interface Support SSM Support IEEE 1588v2 NTPv4 Description Yes 2x1 GE Input; Output 1.544 MHz / 2.048 MHz In; Out Yes Yes Yes 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. 3-60 Cisco 7600 Series Router SIP, SSC, and SPA Hardware Installation Guide OL-5052-14