Juniper Networks J-Series manual RPM Statistics, Round-Trip Times, Probe Counts

J-series™ Services Router Administration Guide

RPM Statistics

At the end of each test, the Services Router collects the statistics for packet round-trip time, packet inbound and outbound times (for ICMP timestamp probes only), and probe loss shown in Table 139 on page 270.

Table 139: RPM Statistics

RPM Statistics	Description
Round-Trip Times
Minimum round-trip time	Shortest round-trip time from the Services Router to the remote server, as measured
	over the course of the test
Maximum round-trip time	Longest round-trip time from the Services Router to the remote server, as measured
	over the course of the test
Average round-trip time	Average round-trip time from the Services Router to the remote server, as measured
	over the course of the test
Standard deviation round-trip time	Standard deviation of the round-trip times from the Services Router to the remote
	server, as measured over the course of the test
Jitter	Difference between the maximum and minimum round-trip times, as measured
	over the course of the test
Inbound and Outbound Times (ICMP Timestamp Probes Only)
Minimum egress time	Shortest one-way time from the Services Router to the remote server, as measured
	over the course of the test
Maximum ingress time	Shortest one-way time from the remote server to the Services Router, as measured
	over the course of the test
Average egress time	Average one-way time from the Services Router to the remote server, as measured
	over the course of the test
Average ingress time	Average one-way time from the remote server to the Services Router, as measured
	over the course of the test
Standard deviation egress time	Standard deviation of the one-way times from the Services Router to the remote
	server, as measured over the course of the test
Standard deviation ingress time	Standard deviation of the one-way times from the remote server to the Services
	Router, as measured over the course of the test
Egress jitter	Difference between the maximum and minimum outbound times, as measured
	over the course of the test
Ingress jitter	Difference between the maximum and minimum inbound times, as measured
	over the course of the test
Probe Counts
Probes sent	Total number of probes sent over the course of the test
Probe responses received	Total number of probe responses received over the course of the test

270■ RPM Overview