Fortinet FortiSwitch-548B v. 5.2.0.2 Administration Manual page 788

Non-Configurable Data
IpInReceives - The total number of input datagrams received from interfaces, including those
received in error.
IpInHdrErrors - The number of input datagrams discarded due to errors in their IP headers,
including bad checksums, version number mismatch, other format errors, time-to-live exceeded,
errors discovered in processing their IP options, etc.
IpInAddrErrors - The number of input datagrams discarded because the IP address in their IP
header's destination field was not a valid address to be received at this entity. This count includes
invalid addresses (e.g., 0.0.0.0) and addresses of unsupported Classes (e.g., Class E). For entities
which are not IP Gateways and therefore do not forward datagrams, this counter includes datagrams
discarded because the destination address was not a local address.
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