3Com 4007 Command Reference Manual page 401

Field Description
receiveError Number of general receive errors.
Interpretation:
A non-zero value indicates that OSPF packets are being
dropped and that this could be causing routing problems.
This statistic is incremented under the following circumstances:
When an OSPF Hello packet is received and the packet
length is too short.
When an OSPF Hello packet is received that has the same
router ID as the router receiving the packet.
When an OSPF database descriptor packet is received and
the packet length is too short.
When an OSPF link state request (LSR) packet is received and
the packet length is too short.
When processing an LSR packet, if the area is not
configured on the interface.
When an OSPF link state update (LSU) packet is received and
the packet length is too short.
When processing an LSU packet, if there are more than 500
advertisements the packet is not processed.
When an OSPF link state acknowledgement (LSAck) packet
is received and the packet length is too short.
When processing an LSAck packet, if the area described by
the packet is not known by the router receiving the packet.
When processing any OSPF packet, if the packet length is
less than the OSPF header length then it must have been
truncated and the packet is dropped.
When an OSPF packet is received on an interface that is not
running OSPF.
When an OSPF packet is received over a virtual link, but the
virtual link is down or not configured.
When an OSPF packet is received (over a non-virtual link)
from a source whose IP network does not match the IP
network of the interface on which it was received.
When an OSPF packet is received on a Non-Broadcast
Multiple Access network from an unknown neighbor.
When an OSPF packet is received whose version is not OSPF
version 2.
receiveHello Number of Hello packets that have been received
receiveLsAck Number of LSA acknowledgments that have been received
receiveLSR Number of LSA request packets that have been received
401