We got a problem with SBM-XEM-X10S. On the switch sometimes there is no more working management interfaces, both telnet / web. In fact it is not possible to contact management ip anymore, even a ping is not working. If IGS is enabled, after a while we cannot manage anymore the switch or contact it by any way (ping, telnet, ssh, http etc). The only way to recover it is to reboot it.
Please upgrade the switch firmware later than v1.0.4-8 to get the problem fixed.