TCP/IP Configuration and Management Manual

SCF Reference
TCP/IP Configuration and Management Manual—427132-004
4-77
STATS PROCESS Command
Description of Statistics for the ICMP Layer
Bad Checksum
is the number of packets received with invalid checksum values. An invalid
checksum is usually caused by a noisy link.
Bad ICMP Code
is the number of packets received that contain invalid ICMP packet-type codes in
the header. The NonStop TCP/IP subsystem supports the following ICMP packet
types and packet-type code:
Echo Reply (0)
Destination Unreachable (3)
Source Quench (4)
Redirect (5)
Echo (8)
Time Exceeded (11)
Parameter Problem (12)
Timestamp (13)
Timestamp Reply (14)
Information Request (15)
Information Reply (1
For more detailed descriptions of these packet types, refer to the descriptions of
the individual packet types below.
Bad ICMP Packets
is the number of invalid ICMP packets received.
Bad Router ADDR List
is the number of IRDP messages with a bad address list.
Bad Router ADV Subcode
is the number of IRDP messages with a bad ICMP subcode.
Bad Router Words/ADDR
is the number of IRDP messages with an incorrect address length.
Errors
is the number of times an ICMP error was generated. Note that Redirect messages
are not included in the total. ICMP errors can be caused by any of the following
reasons: invalid IP options, problems in IP packet forwarding, or a UDP server
crash.