Cisco ASR1006 Hardware Installation Guide - Page 91

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 Figure 3-32 8-Port OC-12c/STM-4 Multirate POS SPA Faceplate SPA-8XOC12-POS STATUS 138896 C/A 0 A/L C/A 1 A/L C/A 2 A/L C/A 3 A/L C/A 4 A/L C/A 5 A/L C/A 6 A/L C/A 7 A/L 12 3 1 C/A (Carrier/Alarm) LED 2 A/L (Active/Loopback) LED 3 STATUS LED Table 3-29 describes the 2-Port, 4-Port, and 8-Port OC-12c/STM-4 Multirate POS SPA LEDs. Table 3-29 2-Port, 4-Port, and 8-Port OC-12c/STM-4 Multirate POS SPA LEDs LED Label C/A A/L STATUS Color Off Green Amber Off Green Amber Off Green Amber State Off On On Off On On Off On On Meaning SONET controller is shut down. Port is enabled by software, and there is a valid SONET signal without any alarms. Port is enabled by software, and there is at least one alarm. Interface is shut down. Port is enabled by software, and loopback is off. Port is enabled by software, and loopback is on. SPA power is off. SPA is ready and operational. SPA power is on and good, and the SPA is being configured. 2-Port, 4-Port, and 8-Port OC-12c/STM-4 Multirate POS SPA Interface Specifications The framer processes incoming and outgoing SONET frames. The framer operates at OC-12c/STM-4 line rates (622.08 Mbps). Packet data is transported with a user-configured encapsulation (such as Point-to-Point Protocol [PPP]), and is mapped into the Layer 2 frame. The 2-Port, 4-Port, and 8-Port OC-12c/STM-4 Multirate POS SPA interface complies with the following IETF RFCs: • RFC 1662, PPP in HDLC-like Framing • RFC 2427, Multiprotocol Interconnect over Frame Relay Encapsulation • RFC 2615, PPP over SONET/SDH OL-14126-12 Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Hardware Installation Guide 3-49