https://community.extremenetworks.com/t5/extremecloud-iq-site-engine/upgrading-x460-from-version-15-5-3-4-to-version-16-2-2-4-using/m-p/42953#M5591 As you'd see per default "Restart Devices After Upgrade" is set.<BR /> That restart/reboot would explain the alarms that you get.<BR /> <BR /> <P class="fancybox-image"><span class="lia-inline-image-display-wrapper" image-alt="5239b0ecf7544b2c989cc59bbe588839_RackMultipart20170616-117438-tkakwc-EMC_device_fw_upgrade_inline.png"><img src="https://community.extremenetworks.com/t5/image/serverpage/image-id/5950iC1C4D21027459458/image-size/large?v=v2&amp;px=999" role="button" title="5239b0ecf7544b2c989cc59bbe588839_RackMultipart20170616-117438-tkakwc-EMC_device_fw_upgrade_inline.png" alt="5239b0ecf7544b2c989cc59bbe588839_RackMultipart20170616-117438-tkakwc-EMC_device_fw_upgrade_inline.png" /></span></P><BR /> <BR /> Fri, 16 Jun 2017 23:18:00 GMT Ronald_Dvorak 2017-06-16T23:18:00Z https://community.extremenetworks.com/t5/extremecloud-iq-site-engine/upgrading-x460-from-version-15-5-3-4-to-version-16-2-2-4-using/m-p/42951#M5589 We have found that downloading XOS to a x460 from netsight ( or its latest naming convention ) we loose remote management and SNMP traffic , to that switch, that basically causes our management systems ( PRTG and Netsight ) to start generating alarms. <BR /> <BR /> The update is successful once access is returned by confirming in the log etc.<BR /> <BR /> We have manually upgraded some X480 units ( console/telnet connected and a TFTP server ) and we do not see the same scenario ie. No alarm generated. Logs look OK .<BR /> <BR /> So the question is:<BR /> Is netsight working as expected .. does netsight , uses different commands or process that have an effect on the CPU.<BR /> <BR /> Basically is this expected behaviour or not.<BR /> <BR /> Fri, 16 Jun 2017 16:43:00 GMT https://community.extremenetworks.com/t5/extremecloud-iq-site-engine/upgrading-x460-from-version-15-5-3-4-to-version-16-2-2-4-using/m-p/42951#M5589 Rod_Robertson2 2017-06-16T16:43:00Z https://community.extremenetworks.com/t5/extremecloud-iq-site-engine/upgrading-x460-from-version-15-5-3-4-to-version-16-2-2-4-using/m-p/42952#M5590 Did you restart the X480 so the new software is active or could the switch do that without a reboot?<BR /> Fri, 16 Jun 2017 21:43:00 GMT https://community.extremenetworks.com/t5/extremecloud-iq-site-engine/upgrading-x460-from-version-15-5-3-4-to-version-16-2-2-4-using/m-p/42952#M5590 Ronald_Dvorak 2017-06-16T21:43:00Z https://community.extremenetworks.com/t5/extremecloud-iq-site-engine/upgrading-x460-from-version-15-5-3-4-to-version-16-2-2-4-using/m-p/42953#M5591 As you'd see per default "Restart Devices After Upgrade" is set.<BR /> That restart/reboot would explain the alarms that you get.<BR /> <BR /> <P class="fancybox-image"><span class="lia-inline-image-display-wrapper" image-alt="5239b0ecf7544b2c989cc59bbe588839_RackMultipart20170616-117438-tkakwc-EMC_device_fw_upgrade_inline.png"><img src="https://community.extremenetworks.com/t5/image/serverpage/image-id/5950iC1C4D21027459458/image-size/large?v=v2&amp;px=999" role="button" title="5239b0ecf7544b2c989cc59bbe588839_RackMultipart20170616-117438-tkakwc-EMC_device_fw_upgrade_inline.png" alt="5239b0ecf7544b2c989cc59bbe588839_RackMultipart20170616-117438-tkakwc-EMC_device_fw_upgrade_inline.png" /></span></P><BR /> <BR /> Fri, 16 Jun 2017 23:18:00 GMT https://community.extremenetworks.com/t5/extremecloud-iq-site-engine/upgrading-x460-from-version-15-5-3-4-to-version-16-2-2-4-using/m-p/42953#M5591 Ronald_Dvorak 2017-06-16T23:18:00Z https://community.extremenetworks.com/t5/extremecloud-iq-site-engine/upgrading-x460-from-version-15-5-3-4-to-version-16-2-2-4-using/m-p/42954#M5592 Hi<BR /> <BR /> The basic scenario , is that we were uploading code to the switch for a later timed reboot.<BR /> <BR /> What we found when using Netsight for this upload we lost communication while the upload was preformed ( I have assumed high CPU while downloading image ) stopped the switches response to PRTG and Netsight.<BR /> <BR /> While performing the same action , this time not using Netsight as the tftp server, we experienced no alarms from our management tools.<BR /> <BR /> I hope that clears up the scenarios we were encountering. Mon, 19 Jun 2017 15:49:00 GMT https://community.extremenetworks.com/t5/extremecloud-iq-site-engine/upgrading-x460-from-version-15-5-3-4-to-version-16-2-2-4-using/m-p/42954#M5592 Rod_Robertson2 2017-06-19T15:49:00Z https://community.extremenetworks.com/t5/extremecloud-iq-site-engine/upgrading-x460-from-version-15-5-3-4-to-version-16-2-2-4-using/m-p/42955#M5593 The units were rebooted this morning and successfully upgraded Mon, 19 Jun 2017 15:49:00 GMT https://community.extremenetworks.com/t5/extremecloud-iq-site-engine/upgrading-x460-from-version-15-5-3-4-to-version-16-2-2-4-using/m-p/42955#M5593 Rod_Robertson2 2017-06-19T15:49:00Z