I am having a major headache with RME collecting the vlan.dat from a VSS and 4510, the device and credentials work fine, however when archiving the config i get partial success due to vlan failing. You can see in the IC_Services log that it attempts to TFTP the .dat file off which it fails with, i believe vlan fetch is only supported by SSH or telnet
when you do a CDA test both devices pass on everything..
When lms does the tftp it literally logs into the box and does the same command you did that timed out. Its not working because whatever interface its using does not have a roue back to the cw box. Use the tftp interface command on the device to choose a routable interface from which todo tftps with and retry the archive sync.