Cisco 10720 Configuration Guide - Page 87

Chapter 3 Installing the Cisco 10720 Internet Router Verifying the Cisco 10720 Internet Router LEDs Note The color of the LEDs is green/red on the DPT and POS/DPT uplink cards, and green/amber on the RPR/SRP uplink card. Table 3-6 DPT Uplink Card Status LEDs LED Activity Description ACTIVE Green The port is active. Blinking red Fiber misconnect is detected (that is, side A connected to neighbor side A). Off The port is not active. CARRIER Green Framer has locked onto the SONET frames. RX PACKET Off Green Framer has not achieved lock. Packets are being received on the port.1,2 Off No packets are being received on the port. WRAP Red Port is in local wrap. Green Wrap in system (for example, another port on the ring is wrapped). Off No wrap (i.e., the port is operating normally). PASS THRU Green Port is in Pass-thru mode. Off Port is operating normally. 1. Note that due to the SRP IP packets, this LED will remain permanently lit during normal SRP operation. 2. After you shut down the port interface on the uplink card, the RX PKT LED remains on if SRP packets (including transit SRP packets) are still being received in Pass-thru mode. The RX PKT LED turns off if no SRP packets are received. Table 3-7 POS/DPT Uplink Card Status LEDs LED ACTIVE CARRIER RX PACKET SRP WRAP SRP PASS THRU Activity Green Off Green Off Green Off Off Off Description Port is active. Port is not active. Framer has locked onto the SONET frames. Framer has not achieved lock. Packets are being received on the port. No packets are being received on the port. Not applicable to POS. Not applicable to POS. 78-13062-10 Cisco 10720 Internet Router Installation and Configuration Guide 3-37