Preparing for Basic Switch Management (2.1.1.4) If the LED is amber, PoE for the port has been disabled. If the LED is blinking amber, PoE is off due to a fault. If the port LED is alternating green-amber, PoE is denied because providing power to the powered device will exceed the switch power capacity. If the port LED is green, PoE is being provided to a device. If the LED is green, it indicates the PoE mode is selected and the port LEDs will display colors with different meanings. If the LED is blinking amber, the PoE mode is not selected but at least one of the ports has been denied power, or has a PoE fault. If the LED is off, it indicates the PoE mode is not selected and none of the ports have been denied power or placed in a fault condition. If PoE is supported, a PoE mode LED will be present. If the LED is blinking green, the port is operating at 1000 Mb/s. If the LED is green, the port is operating at 100 Mb/s. If the LED is off, the port is operating at 10 Mb/s. When selected, the port LEDs will display colors with different meanings. Indicates the port speed mode is selected. If the port LED is green, the port is in full-duplex mode. When selected, port LEDs that are off are in half-duplex mode. Indicates the port duplex mode is selected when the LED is green. If the LED is blinking amber, the port is blocked to prevent a possible loop in the forwarding domain. If the LED is amber, the port is blocked to ensure a loop does not exist in the forwarding domain and is not forwarding data (typically, ports will remain in this state for the first 30 seconds after being activated). If the LED is alternating green-amber, there is a link fault. If the LED is blinking green, there is activity and the port is sending or receiving data. If the LED is off, there is no link, or the port was administratively shut down. Indicates that the port status mode is selected when the LED is green.This is the default mode. If the LED is blinking amber, the internal power supply in the switch has failed, and the RPS is providing power. If the LED is amber, the RPS is in standby mode or in a fault condition. If the LED is blinking green, the RPS is connected but is unavailable because it is providing power to another device. If the LED is green, the RPS is connected and ready to provide backup power.
If the LED is off, the RPS is off or not properly connected. If the LED is amber, the system is receiving power but is not functioning properly. If the LED is green, the system is operating normally. If the LED is off, it means the system is not powered. Shows whether the system is receiving power and is functioning properly. Table 2-1 contains the purpose of the Cisco 2960 switch LED indicators, and the meaning of their colors. Use the show bootvar command ( show boot in older IOS versions) to see the current IOS boot file version. In Figure 2-1, the BOOT environment variable is set using the boot system global configuration mode command. The IOS operating system then initializes the interfaces using the Cisco IOS commands found in the configuration file, startup configuration, which is stored in NVRAM.
#How to configuration cisco switch series#
On Catalyst 2960 Series switches, the image file is normally contained in a directory that has the same name as the image file (excluding the. In a depth-first search of a directory, each encountered subdirectory is completely searched before continuing the search in the original directory. If this variable is not set, the switch attempts to load and execute the first executable file it can by performing a recursive, depth-first search throughout the flash file system. The boot loader finds the Cisco IOS image on the switch using the following process: The switch attempts to automatically boot by using information in the BOOT environment variable.
#How to configuration cisco switch software#
Finally, the boot loader locates and loads a default IOS operating system software image into memory and hands control of the switch over to the IOS. The boot loader initializes the flash file system on the system board. It initializes the CPU registers that control where physical memory is mapped, the quantity of memory, and memory speed. The boot loader performs low-level CPU initialization. The boot loader is a small program stored in ROM and is run immediately after POST successfully completes. Next, the switch loads the boot loader software.
It tests the CPU, DRAM, and the portion of the flash device that makes up the flash file system.
First, the switch loads a power-on self-test (POST) program stored in ROM.