FortiGate get system arp
Display the FortiGate ARP table to map IPv4 addresses to learned MAC addresses and interfaces during local-network troubleshooting.
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arpLenovo DE Series with VMware ESXi over SAS: fix single-path visibility, ALUA/NMP claiming and controller management
Troubleshoot Lenovo ThinkSystem DE Series storage connected directly to VMware ESXi over SAS when LUNs appear with only one path, devices show degraded status, volumes are not on the preferred controller, or ESXi reports HPP/NMP claim-rule conflicts.
Recover a failed FortiOS upgrade using the backup firmware partition
Recover a FortiGate that loses LAN connectivity after a firmware jump by booting its working backup partition from the serial console and then following the verified upgrade path.