This alarm is to notify you that the heartbeat from the Local Manager the Control Center has failed due to a connection time out.
The steps to clear the alarm involve determining the point of failure between the Local Manager and the Control Center.
Ping the Control Center IP address to ensure the Local Manager can route to it:
[admin@Test5000]# ping 172.30.111.192 PING 172.30.111.192 (172.30.111.192) 56(84) bytes of data. 64 bytes from 172.30.111.192: icmp_seq=1 ttl=62 time=0.364 ms 64 bytes from 172.30.111.192: icmp_seq=2 ttl=62 time=0.371 ms 64 bytes from 172.30.111.192: icmp_seq=3 ttl=62 time=0.399 ms 64 bytes from 172.30.111.192: icmp_seq=4 ttl=62 time=0.391 ms --- 172.30.111.192 ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 2998ms rtt min/avg/max/mdev = 0.364/0.381/0.399/0.019 ms
If you are unable to reach the Control Center, it's a good indication that the heartbeat failed due to internal network connectivity issues.
Heartbeating occurs over port 8443. If you have a firewall on your network, verify that it's allowing transmission of data on port 8443.
Often the error occurs due to incorrect configuration settings. Please see Control Center Management and verify that the management configurations settings are correct.
If you are using a DNS server, this alarm can also mean that the DNS server can't be reached. Run the config system ip command and verify that the DNS settings are configured correctly.
If these steps do not resolve the issue, please contact Lantronix Support for further troubleshooting steps.