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Description:
If one of your devices being managed by the LANCOM Management Cloud (LMC) is shown as “offline”and operated with the firmware "LCOS" is displayed as "offline", but is otherwise working functions normally, the communication with to the LMC is disrupteddisturbed. This article describes what steps for troubleshooting can be taken.
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DNS forwarding takes precedence over all other DNS servers stored in the device and should be checked first. |
1.2.2 In the case of a plain Ethernet connection with static IP parameters, check whether the correct DNS server has been entered under Communication → Protocols → IP parameters → <name of the Internet connection>.
1.2.3 In the case of a plain Ethernet connection with dynamic IP address assignment via DHCP from an upstream router, use LANmonitor to check whether the correct DNS server has been assigned. If the DNS server is not correct, contact the administrator of the upstream router or adjust the configuration yourself if you have access to it.
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