With proper monitoring, you can be sure to be alerted to any environmental issues affecting network equipment and prevent network outages before they occur. You can use SNMP in the Cisco IOS to send environmental traps to a network monitoring station. The Show Environment command provides detailed information about your router’s or switch’s fan, power, and temperature.

With this code, a trap would be sent to your SNMP management station for environmental alerts such as fan failure, temperature thresholds warnings, voltage notifications, or redundant power supply failures. To do this, use the envmon SNMP notification type, like this: By enabling SNMP on the router, it can send traps to an SNMP management station that alerts you when environmental thresholds are exceeded. With SNMP in the Cisco IOS, you can be alerted to the environmental conditions that your router is able to monitor. If there is an environmental problem, what can I do to be alerted? Unfortunately fixed configuration switches require the use of xModem to restore a corrupt or missing IOS images unlike the Cisco 4500 and Cisco 6500 Series supervisor.

Type command Show version or check the box tag, or check serial number at the bottom of device. Recovering the Cisco IOS Image on a fix configuration Cisco Catalyst Series Switch is quite a bit different and more of an old school way of doing an IOS image recovery. Troubleshooting or return, need to check serial no. For example, on the 3845 series, there are additional features, such as the multiple temperature sources and alert thresholds that can be configured. Check the Serial Number of Cisco Products. Voltage 4(1200) is Normal, Current voltage = 1203 mVĪs you can see, the functionality of the Show Environment command also varies from one hardware platform to another. Voltage 3(2500) is Normal, Current voltage = 2501 mV Voltage 2(5150) is Normal, Current voltage = 5153 mV Voltage 1(3300) is Normal, Current voltage = 3300 mV Internal-ambient temperature = 35, Normal Intake temperature warning: Enabled, Threshold: 55Ĭore temperature warning: Enabled, Threshold: 70 (CPU: 90) Let’s look at three examples of the Show Environment command and how it displays information based on different routers and switches. Well, with one swift command you can display temperature and fan status and internal temperatures of your routers. I should also point out that the options for this command vary based on the hardware that it is running on. You can view the status of your router fans, power supply, system board temperature, and more. Show environment Īs you can see, this command has a number of options. Here are the options available for the Show Environment command:

You will need to access this command in global Exec mode. The Show Environment command can be very helpful to alert you of potential hardware issues. If your remote router and switches are being cooled properly, how do you know that? Are the fans working? In the following article David Daviswill tell you how to see the environmental status of your Cisco routers and switches and how to be alerted when there is a hardware problem.

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