Cisco 3825 Troubleshooting Guide - Page 9

The show environment Command Table 1 Cisco 3800 Series LED Indicators (continued) LED 3825 3845 GE0: Speed Rear Rear GE1: Link Rear Rear GE1: Speed Rear Rear PS1 - Front PS2 - Front Color and State Meaning Blinking green Blink frequency indicates port speed 1 blink per second: 10 Mbps 2 blinks per second: 100 Mbps 3 blinks per second: 1000 Mbps Off No link Green Ethernet cable present, link established Blinking green Blink frequency indicates port speed 1 blink per second: 10 Mbps 2 blinks per second: 100 Mbps 3 blinks per second: 1000 Mbps Off Power supply 1 not present Steady green Present and enabled Amber Present and off or malfunctioning Off Power supply 2 not present Steady green Present and enabled Amber Present and off or malfunctioning The show environment Command The show environment command can help you monitor and troubleshoot router power and ventilation status. This is an example of the output of the show environment command for a Cisco 3825 router with an AC power supply and no Redundant Power System: Router# show environment Redundant Power System is not present. SYS PS1 is present. Type: AC AUX (-48V) PS1 is absent. Fan 1 Normal Fan 2 Normal Fan 3 Normal Fan Speed is Normal Alert settings: Intake temperature warning: Enabled, Threshold: 50 Core temperature warning: Enabled, Threshold: 70 (CPU: 95) Board Temperature: Normal Internal-ambient temperature = 29, Normal CPU temperature = 46, Normal Intake temperature = 31, Normal Voltage 1(3300) is Normal, Current voltage = 3316 mV Voltage 2(5150) is Normal, Current voltage = 5210 mV Voltage 3(2500) is Normal, Current voltage = 2525 mV Voltage 4(1200) is Normal, Current voltage = 1191 mV OL-5972-01 Troubleshooting Cisco 3800 Series Routers 9