| Description | A conceptual row in the inetIcmpMsgTable.
A row with an inetIcmpMsgIfIndex value of zero indicates
a system-wide value; a row with a non-zero
cInetIcmpMsgIfIndex indicates an interface-specific
value. A system may provide both system-wide and
interface-specific values, in which case it is important
to note that the system-wide value may not be equal to
the sum of the interface-specific values across all
interfaces due to e.g. dynamic interface
creation/deletion.
If the system keeps track of individual ICMP code values
(e.g. destination unreachable, code administratively
prohibited), it creates several rows for each
inetIcmpMsgType, each with an appropriate value of
cInetIcmpMsgCode. A row with the special value of
cInetIcmpMsgCode, 256, counts all packets with type
cInetIcmpMsgType that aren't counted in rows with a value
of cInetIcmpMsgCode other than 256. |