Cisco 7600 SIP 200 Hardware Installation Guide - Page 105
-Port Gigabit Synchronous Ethernet SPA LEDs
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Chapter 3 Overview: Cisco 7600 Series Router Shared Port Adapters 2-Port Gigabit Synchronous Ethernet SPA Overview 2-Port Gigabit Synchronous Ethernet SPA LEDs The 2-Port Gigabit Synchronous Ethernet SPA is a half-height SPA with these LEDs: • SPA status LED • Line status LED - A bi-color, surface-mount, right-angle LED dedicated to each SFP, RJ-45 and coax connector to indicate port status • Debug LED Table 3-33 describes the 2-Port Gigabit Synchronous Ethernet SPA LEDs. Table 3-33 2-Port Gigabit Synchronous Ethernet SPA LEDs LED Label Color Meaning SPA status LED Off The SPA is powered off. Amber The SPA is powered on but initializing. Green The SPA is powered on and operational. Amber and This state is unused and its meaning is undefined. Port is green not enabled. Line Status LED Off Port is not enabled by the software. Amber Port is enabled by the software, but there is a problem with the link. Green Port is enabled by the software, and the link is valid. Amber and This state is unused and its meaning is undefined. green Debug LED Green Indicates a SPA OK status to the host. Figure 3-48 2-Port Gigabit Synchronous Ethernet SPA Faceplate STATUS 279144 A/L 0 A/L 1 SPA-XXXXXXXXXXX 2-Port Gigabit Synchronous Ethernet SPA Interface Specifications The 2-Port Gigabit Synchronous Ethernet SPA is compatible with the 2-Port Gigabit Ethernet SPA on all platforms and provides additional services of clock frequency and time of day synchronization. The2-Port Gigabit Synchronous Ethernet SPA uses new technologies such as Synchronous Ethernet (SyncE), ESMC, and IEEE1588v2. However, the 2-Port Gigabit Synchronous Ethernet SPA supports only optical interfaces. As a result the 2-Port Gigabit Synchronous Ethernet SPA does not support multiple line speeds (10/100/1000 Mbps) on the 2-Port Gigabit Ethernet SPA. Synchronous Ethernet is a layer 1 technology which delivers a very accurate frequency reference, but it doesn't address time synchronization. IEEE1588v2 defines a Precision Time Protocol (PTP),which distributes accurate timing information (both clock frequency and time of day) over packet networks. OL-5052-14 Cisco 7600 Series Router SIP, SSC, and SPA Hardware Installation Guide 3-59