UPS: Lost the local network management interface-to-UPS communication

[quciky_harry]

Hi, 

as many other subjects I've the same problem. The solutions with power cycle and so on didn't solve my problem. As I saw in the eventlog the problem appeared just after I changed paramaters in the SNMP area. I turned back the original items b ut the problem is still the same. What may be the correction?

Eventlog:

04/21/2023 13:14:20 Device UPS: The local network management interface-to-UPS communication not established. 0x0102
04/21/2023 13:13:44 System Network service started. System IP is 192.168.248.xxx from DHCP server 192.168.248.xxx with 863992 second lease. 0x0007
04/21/2023 13:13:31 System Network service started. IPv6 address FE80::2C0:B7FF:FEB7:34D8 assigned by link-local autoconfiguration. 0x0007
04/21/2023 13:13:24 System Network Interface restarted. 0x0002
04/21/2023 13:13:16 System Network Interface restarting. 0x0009
04/21/2023 13:13:16 System Web user 'apc' logged out from 192.168.248.xxx. 0x001F
04/21/2023 13:10:16 apc Configuration change. SNMP access control 1 access enable. 0x0033
04/21/2023 13:09:48 apc Configuration change. SNMP user profile 1 privacy protocol. 0x0033
04/21/2023 13:09:48 apc Configuration change. SNMP user profile 1 authentication protocol. 0x0033
04/21/2023 13:09:48 apc Configuration change. SNMP user profile 1 access type. 0x0033
04/21/2023 13:09:47 apc Configuration change. SNMP user profile 1 privacy passphrase. 0x0033
04/21/2023 13:09:45 apc Configuration change. SNMP user profile 1 authentication passphrase. 0x0033
04/21/2023 13:09:43 apc Configuration change. SNMP user profile 1 user name. 0x0033
04/21/2023 13:08:21 apc Configuration change. SNMPv3 Access 0x0033
04/21/2023 13:08:09 apc Configuration change. SNMPv3 Access 0x0033
04/21/2023 13:07:45 apc Web user 'apc' logged in from 192.168.248.xxx. 0x0015

[quciky_harry · Accepted solution]

As decribed I tried to uddate the NMC2 firmware. During the uüdate I got an error an aborted the task. Surprise! The UPS was visible again.

Here the log:

Device UPS: Restored the local network management interface-to-UPS communication.
System Network service started. System IP is 192.168.248.xxx from DHCP server 192.168.248.xxx with 863992 second lease.
System Network service started. IPv6 address FE80::2C0:B7FF:FEB7:xxxx assigned by link-local autoconfiguration.
System Network Interface restarted.
System Web user 'apc' logged out from 192.168.248.xxx.
apc Web user 'apc' logged in from 192.168.248.xxx.
System Web user 'apc' logged out from 192.168.248.xxx.
apc Web user 'apc' logged in from 192.168.248.xxx.
Device UPS: The local network management interface-to-UPS communication not established.

Even we didn't find the reason for the primary problem we can close my ticket.