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Viewing ICMP Group Statistics
datagram. If the timer expires before all fragments are received, the station
discards the fragments it has already received, and transmits a time exceeded
message.
Parameter Problem
The number of ICMP Parameter Problem messages sent, according to the
icmpOutParmProbs. A parameter problem message indicates that a datagram was
discarded due to a problem not covered by any of the previous messages.
Source Quench
The number of ICMP Source Quench messages sent, according to the
icmpOutSrcQuenchs. A router issues a source quench message when network
traffic overwhelms the router’s buffering capability. A source quench message
instructs a host to slow its current rate of datagram transmission.
Redirect
The number of ICMP Redirect messages sent, according to the icmpOutRedirects.
When a host transmits, it uses minimal routing information and it learns new
routes from routers. A router that detects a host using an inefficient route sends a
redirect message that contains new routing information.
Echo Request
The number of times an ICMP Echo (request) messages is sent, according to the
icmpOutEchos. An echo request tests the connectivity between two network
devices.
Echo Reply
The number of ICMP Echo Reply messages sent, according to the
icmpOutEchoReps. When a device receives an echo request, it responds by issuing
an echo reply.
Timestamp Request
The number of ICMP Timestamp Request messages sent, according to the
icmpOutTimeStamps.
Timestamp Reply
The number of ICMP Timestamp Reply messages sent, according to the
icmpOutTimeStampReps. To synchronize system clocks, a machine can issue a
timestamp request to another machine. The destination machine then issues a
timestamp reply message that includes the system time.
Address Mask Request
The number of ICMP Address Mask Request Messages sent, according to the
icmpOutAddrMasks.