Solution if ISM fails to receive errors reported by devices

Solution if ISM fails to receive errors reported by devices:
Reasons why ISM fails to receive errors reported by devices:
The port for reporting is shielded.
The management network port and service network port are assigned to the same network segment.
The ARP is not updated.
Collect the environment information such as management host route information, storage device route information, and network information by tracing the route to diagnose the fault.
Note:
The port for reporting is shielded.
The port for reporting is shielded (for example, 8011). As a result, the storage system cannot access the host and ISM fails to receive data packets reported by devices. Check whether the port for reporting is shielded by performing the following steps:
1. Check whether the firewall is enabled on the host. If yes, disable the firewall and update the device information.
2. If information about the route from the management host to the storage device still cannot be collected on the host, proceed to step 3.
3. Collect information about the route from the storage device to the management host.
On the CLI, run tracepath ip/port or traceroute. (These two commands are the native commands in the S5000 R5. If this method does not work, try other route tracing methods). Information about the route from the storage device to the port of the IP address is displayed. (Port 8011 is the default port that reports alarms.)
4. If the firewall is enabled on the management host, collect information about the route from the storage device to the management host.
Troubleshooting:
Locate fault on the host. Check whether the management host is enabled with firewall (including the built-in firewall of Windows) or other anti-virus software that has shielded the port for reporting.
The management port and service port are assigned to the same network segment.
The management network port and service network port of the storage device are configured in the same network segment according to the routing table. The alarms are reported by the service network port, and the management host cannot receive the alarms.
Troubleshooting:
Assign the management network port and service network port to different network segments.
The ARP is not updated.
A host is connected to two storage systems with the same IP address. As a result, if you search for a storage device based on the MAC address recorded in the ARP table, no device is detected or an incorrect device is detected.
Run arp -d on the host to delete the ARP table.

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