https://community.extremenetworks.com/t5/extremeswitching-eos/snmp-contact-lost-and-device-down/m-p/17126#M444 Hi Visconti,<BR /> It isn't clear what your question is here. How can we help you?<BR /> Tue, 11 Sep 2018 00:04:00 GMT Drew_C 2018-09-11T00:04:00Z https://community.extremenetworks.com/t5/extremeswitching-eos/snmp-contact-lost-and-device-down/m-p/17125#M443 I have received a problem whit one (B5 series) of my (16 switch B5 and X450 series).<BR /> Since the 4:02 AM the event log show a sequence of "SNMP contact lost" and "SNMP contact stabilished" all the port iof this switch resulted DOWN and at 11:28 AM result a restart of this switch (!!!!!!)<BR /> I have noticed that the ping it's OK but the device terminal do not functioned...<BR /> At the 11:34 AM before I have monitored same of windows of the management network the switch is restarded...<BR /> <BR /> Someone in this FORUM recommended to set the "SNMP timedout" form 3 to 5 seconds<BR /> <BR /> Tue, 04 Sep 2018 15:29:00 GMT https://community.extremenetworks.com/t5/extremeswitching-eos/snmp-contact-lost-and-device-down/m-p/17125#M443 Visconti 2018-09-04T15:29:00Z https://community.extremenetworks.com/t5/extremeswitching-eos/snmp-contact-lost-and-device-down/m-p/17126#M444 Hi Visconti,<BR /> It isn't clear what your question is here. How can we help you?<BR /> Tue, 11 Sep 2018 00:04:00 GMT https://community.extremenetworks.com/t5/extremeswitching-eos/snmp-contact-lost-and-device-down/m-p/17126#M444 Drew_C 2018-09-11T00:04:00Z https://community.extremenetworks.com/t5/extremeswitching-eos/snmp-contact-lost-and-device-down/m-p/17127#M445 One of my 16 switches (seris B5) has reboot for no reason <BR /> Tue, 11 Sep 2018 15:22:00 GMT https://community.extremenetworks.com/t5/extremeswitching-eos/snmp-contact-lost-and-device-down/m-p/17127#M445 Visconti 2018-09-11T15:22:00Z