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Chapter 5. SNMP Operation
5.6 SNMP Upgrade via TFTP
To upgrade the SNMP firmware, configure a TFTP server on your network. Configuring a TFTP server is beyond the scope of this document. However, in the upgrade package there should be a free, open source, portable (no installation required), TFTP daemon for Windows. Place the upgrade binary file in the same folder as the TFTP server and set the IP address and image filenames in the SNMP agent. Refer to 4.3.3 for configuring the SNMP card for TCP/IP. Firmware is broken into two images, the 'kernel' and the 'filesystem'. The kernel (kernel.gz) is the Linux OS and is rarely, if ever, updated. The 'filesystem' (romfs.gz) contains most of the operation programming supporting the SNMP and web provisioning for the Fiber Multiplexer. This may require updating when new features are added or if bugs are found and need fixing. For any TCP/IP changes to be remembered in the agent, please click the "Save Parameters" button and then click "Reboot". TFTP Server IP ‐ The IP address of the server running a TFTP daemon. There must be a reliable TCP/IP connection between the TFTP Server and the Fiber Multiplexer's SNMP agent. Kernel Filename ‐ This is the filename of the kernel image which must be on the TFTP server. File‐System Filename ‐ This is the filename of the filesystem which must be on the TFTP server. "Flash Kernel" button ‐ Click this once to start kernel update. "Flash File System" button ‐ Click this once to start filesystem update. Warning!! DO NOT INTERRUPT POWER DURING UPDATE OPERATION OR THE FLASH MEMORY MAY BECOME CORRUPT. 51