ICMP (G)

The ICMP objects (Internet Control Message Protocol) are the input and output error and control message statistics for the IP layer. The (G) indicates that graphs are available. The ICMP group consists of twenty-six counters that track the number of times this message type was generated by and received by the local ICMP entity. The other counters keep track of the total messages received, sent, received in error, or not sent due to error.

Figure 77. SNMP Browser: ICMP Group

The fields on the ICMP MIB Information screen are:

 

In

Out

Messages

ICMP In Messages. The total number of ICMP messages the entity received. Note that this counter includes all those counted by icmpInErrors.

ICMP Out Messages. The total number of ICMP messages this entity attempted to send. Note that this counter includes all those counted by icmpOutErrors.

Errors

ICMP In Errors. The number of ICMP messages that the entity received but determined as having ICMP-specific errors (bad ICMP checksums, bad length, etc.).

ICMP Out Errors. The number of ICMP messages that this entity did not send due to problems discovered within ICMP, such as a lack of buffers. This value should not include errors discovered outside the ICMP layer, such as the inability of IP to route the resultant datagram. In some implementations no types of error exist that contribute to this counter's value.

Dest. Unreachable

ICMP In Dest. Unreaches. The number of ICMP Destination Unreachable messages received.

ICMP Out Destination Unreachable. The number of ICMP Destination Unreachable messages sent.

Time Exceeded

ICMP In Time Exceeds. The number of ICMP Time Exceeded messages received.

ICMP Out Time Exceeds. The number of ICMP Time Exceeded messages sent.

Parameter Problem

ICMP In Parameter Problems. The number of ICMP Parameter Problem messages received.

ICMP Out Parameter Problems. The number of ICMP Parameter Problem messages sent.

Source Quench

ICMP In Source Quenches. The number of ICMP Source Quench messages received.

ICMP Out Source Quenches. The number of ICMP Source Quench messages sent.

Redirect

ICMP In Redirects. The number of ICMP Redirect messages received.

ICMP Out Redirects. The number of ICMP Redirect messages sent.

Echo

ICMP In Echoes. Echo (request) messages received.

ICMP Out Echoes. The number of ICMP Echo (request) messages sent.

Echo Reply

ICMP In Echo Replies. The number of ICMP Echo Reply messages received.

ICMP Out Echo Replies. The number of ICMP Echo Reply messages sent.

TimeStamp

ICMP In Timestamps. The number of ICMP Timestamp (request) messages received.

ICMP Out Timestamps. The number of ICMP Timestamp (request) messages sent.

TimeStamp Reply

ICMP In Timestamp Replies. The number of ICMP Timestamp Reply messages received.

ICMP Out Timestamp Replies. Number of ICMP Timestamp Reply messages sent.

Address Mask

ICMP In Address Mask. The number of ICMP Address Mask Request messages received.

ICMP Out Address Masks. Number of ICMP Address Mask Request messages sent.

Address Mask Reply

ICMP In Address Mask Replies. The number of ICMP Address Mask Reply messages received.

ICMP Out Address Mask Replies. Number of ICMP Address Mask Reply messages sent.

 

See also: