The switchover occurs frequently between the active and standby management nodes (CRM, OMM, and ESC or VRM). As recorded in the watchdog log, communication fails between the management nodes and the gateway, whereas the gateway can be pinged from the management nodes.
When you ping the gateway on a management node, no packet loss occurs. However, the storage latency varies, and a switchover occurs every 2 to 3 minutes.
Detailed information is as follows:
The watchdog on the CRM, OMM, and ESC nodes or the VRM node detects communication failures between the nodes and the gateway.
When you ping the gateway on the CRM, OMM, and ESC nodes or the VRM node, no packet is lost.
Based on the analysis of packets captured on the network, a large number of ARP packets are sent from the IP address of the faulty node, but the gateway does not respond to the ARP requests.