Cisco Cisco IOS Software Release 12.4(6)T

When compared to the IP SLAs User Datagram Protocol (UDP) jitter operation, the IP SLAs ICMP 
jitter operation may provide less accurate measurements because the accuracy of the measurements 
provided by a non-Cisco destination device cannot be determined.

Since ICMP packets do not support voice technology, the IP SLAs ICMP jitter operation does not 
support Mean Opinion Score (MOS), Calculated Planning Impairment Factor (ICPIF), or estimated 
transmission rating factor (R) reaction configuration capabilities.

To configure an IP SLAs ICMP jitter operation, you should understand the following concepts:

The IP SLAs ICMP Jitter Operation feature provides the following key benefits:

End-to-end performance measurements between a Cisco device (source) and any other IP device 
(destination) using ICMP.

Proactive threshold violation monitoring through Simple Network Management Protocol (SNMP) 
trap notifications and syslog messages.

The IP SLAs ICMP jitter operation supports the following statistical measurements:

Jitter (source-to-destination and destination-to-source)

Latency (source-to-destination and destination-to-source)

Round-trip time latency

Packet loss

Successive packet loss

Out-of-sequence packets (source-to-destination, destination-to-source, and round-trip)

Late packets

Obtaining separate measurements for the source-to-destination and destination-to-source data paths can 
be useful for identifying problems in your network because the paths may be different (asymmetric),