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GSM7352Sv2 bricked? No GUI or CLI access.
Adopting this switch was my foray into the world of enterprise networking. The switch was working, though I was having connectivity issues (which turns out was unrelated), upon which I noticed the firmware/software being out of date, so I decided to update it. I updated it via the web-GUI since I didn't have a console cable handy, and figured it'd be easy enough. Clearly I did not do enough research, because I think, but I'm not sure I may have jumped to the 10.x software and I'm not sure I was on the latest 8.x before doing so. Which I read somewhere would cause problems. Anyway, the webgui showed that it flashed successfully and I proceeded to reboot the system and have never been able to get it working since.
I've rebooted and I've tried resetting to factory. It seems to boot when powered on. There are no amber lights, however, when I plug in a cable to any of the ports it does nothing. I can't access the web-GUI since none of the ports are responsive. I later tried accessing the console using a db9-db9 cable connected to a usb-db9 adapter to a windows laptop. Using putty I tried to access the CLI and I get nothing but a blank screen. I've tried at baud rate 9600, and somewhere I read 115200, neither of which produce a thing. Is this thing a paperweight now?
Hello khagberg,
Welcome to the community!
It appears that the flash memory may have been corrupted. I'm not sure if this recovery procedure from before will work because it needs at least a message displayed on the console. Is there a way you can test a different console cable?
Thanks,
4 Replies
Hello khagberg,
Welcome to the community!
It appears that the flash memory may have been corrupted. I'm not sure if this recovery procedure from before will work because it needs at least a message displayed on the console. Is there a way you can test a different console cable?
Thanks,
I have no other electronics with a serial port in order to test the cable on a separate device. I'm using a USB-Serial adapter along with a DB9-DB9 cable to connect. Both are brand new, so I doubt that the cable is the culprit. I may try to get another cable just to check, though, since a cable is a lot cheaper than junking an entire switch.
I have to admit. I'm a little surprised that a corrupt flash (which I had assumed was the case) would cause the console port not to work. That's what has me so baffled.
Hello khaberg,
I'm not saying that the cable is defective or something but cases from before showed that the GSM7352Sv2 or the likes are a little sensitive and choosy on cables used. I am not sure as well, if its really just corrupted flash it might be something else but that is the first thing that came into my mind after reading your post.
Thanks,
In the end it was the cable causing the issue. I just bit the bullet and ordered another. New one arrived today and works like a charm. Now to reflash.
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