TFTP error: server unable to handle request

Serial Servers & Infrastructure Mangement ConnectPort TS/LTS
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1

Hi, Just changed from PortServers to ConnectPort devices & TFTP does not work for Backup, Firmware etc. Works fine for PortServers on the same subnet etc. Error is "server unable to handle request. Tried different TFTP servers & applications as well.

2

I just tested this with a ConnectPort TS 16 device and the firmware, backup and restore all worked just fine using a tftp server in Linux.

I did see the error you reported when the permissions were not open on the file located on tftp server. I recommend confirming the tftp connections are not being blocked/firewalled and the file/directory permissions are open.

3

PortServer TS on the same subnet to the same TFTP server works fine, It’s not being blocked by any firewalls, PortServer TS working OK confirms that & also any file/directory permission issues.
I’ve used the following Windows TFTP server applications all with the same results (Solarwinds,Cisco, Microsoft, OpenTFTPServer, SourceForge + others)
What flavour Linux & TFTP application do you use?

4

I used tftp-server on CentOS EL6. What function are you trying to accomplish when you see this error (i.e. firmware update, backup or restore)?

5

Thanks - I’ll stand up a server & test it out. TFTP fails on all 3, FW update, backup & restore on both a TS8 & TS16. I have wireshark captures now & will also use “set trace” on the ConnectPort.