In the firewall dual-machine hot backup scenario, the location, type and number of the service boards and interface cards of the active and standby devices must be the same. Otherwise, the active…

In the firewall dual-machine hot backup scenario, the location, type and number of the service boards and interface cards of the active and standby devices must be the same. Otherwise, the active device will back up past information and be incompatible with the physical configuration of the standby device, causing the active device to fail. A problem occurs after the device is switched.