D-Link DXS-3250E Installation Guide - Page 31

D-Link DXS-3250/DXS-3227P/DXS-3227 User Guide 4. Activate the AC power receptacle. When the power is turned on with the local terminal already connected, the switch goes through Power On Self Test (POST). POST runs every time the device is initialized and checks hardware components to determine if the device is fully operational before completely booting. If a critical problem is detected, the program flow stops. If POST passes successfully, a valid executable image is loaded into RAM. POST messages are displayed on the terminal and indicate test success or failure. As the switch boots, the bootup test first counts the device memory availability and then continues to boot. The following screen is an example of the displayed POST. ------ Performing the Power-On Self Test (POST) -----UART Channel Loopback Test PASS Testing the System SDRAM PASS Boot1 Checksum Test PASS Boot2 Checksum Test PASS Flash Image Validation Test PASS BOOT Software Version x.x.x.xx Built 07-Jan-200x 10:53:05 Processor: xxxxxx xxxxx xxxx, xx MByte SDRAM. I-Cache 8 KB. D-Cache 8 KB. Cache Enabled. Autoboot in 2 seconds - press RETURN or Esc. to abort and enter prom. The boot process runs approximately 30 seconds. The auto-boot message that appears at the end of POST (see the last lines) indicates that no problems were encountered during boot. During boot, the Startup menu can be accessed if necessary to run special procedures. To enter the Startup menu, press or within the first two seconds after the auto-boot message is displayed. For information on the Startup menu, see "Startup Menu Functions." If the system boot is not interrupted by pressing or , the system continues operation by decompressing and loading the code into RAM. The code starts running from RAM and the list of numbered system ports and their states (up or down) are displayed. Page 31