I am a newbie in the network dept. at my company and have been set the task of recovering the firmware on a Foundry EdgeIron 4802CF switch. I must admit, though, that I did ask my manager if he wanted me to delete the two .bin files and he responded with an affirmative "Yes." Perhaps it was too early in the morning or he hadn't had his starter coffee but, whatever, the files are now gone and I cannot configure the switch!

I have tried what it says in the manual to restore the firmware using a telnet session to the switch with Tera Term Pro and XMODEM but when I change the baud rate in the telnet session, the session stops and I get a garbage output as follows:

Free Space : 6815744
[X]modem Download [D]elete File [S]et Startup File
[C]hange Baudrate [Q]uit
Select>
Change baudrate [A]9600 [B]115200
Baudrate set to 115200"BÂDgÆ60fo" "î1Bêk"Ž+" "Ž/"ŒB "RB">Î6F06N2*²k03Š`f

I have been trying to hack this problem for two days with no success. I cannot log a ticket with Foundry Networks as we do not have a support contract with them anymore... I was hoping someone out there might be able to share an expert answer with me? Please help,

Sam.

Answer by Steve Blass

Expert's answer Once you change the baud rate on the switch side you would need to adjust the baud rate in the terminal program to match. You may be able to restore the communication in the same session or you may have to disconnect and reset your terminal program and then connect again. I'm not sure you need to change the baud rate to load the new firmware image though. 9600 is not very fast but you only have to do this one time and so my recommendation would be to leave the connection speed at 9600 and follow the instructions on page 3-25 of the Foundry EdgeIron User Guide to load the image using TFTP. You can find TFTP server software for Windows available for free from Jounin.net and Tftp-server.com among other places if you do not have a TFTP server handy in your network. Welcome to the wild world of network administration.