Rpm Packet Collection; Switches; Tests And Probe Types - Juniper JUNOS OS 10.4 - FOR EX REV 1 Manual

Complete Software Guide for Junos
Understanding Real-Time Performance Monitoring on EX Series Switches
3998
®
OS for EX Series Ethernet Switches, Release 10.4
Real-time performance monitoring (RPM) enables you to configure active probes to
track and monitor traffic across the network and to investigate network problems. You
can use RPM with Juniper Networks EX Series Ethernet Switches.
The ways in which you can use RPM include:
Monitor time delays between devices.
Monitor time delays at the protocol level.
Set thresholds to trigger SNMP traps when values are exceeded.
You can configure thresholds for round-trip time, ingress or egress delay, standard
deviation, jitter, successive lost probes, and total lost probes per test. (SNMP trap
results are stored in pingResultsTable
and
pingProbeHistoryTable
Determine automatically whether a path exists between a host router or switch and
its configured BGP neighbors. You can view the results of the discovery using an SNMP
client.
Use the history of the most recent 50 probes to analyze trends in your network and
predict future needs.
RPM provides MIB support with extensions for RFC 2925, Definitions of Managed Objects
for Remote Ping, Traceroute, and Lookup Operations.
This topic includes:
RPM Packet Collection on page 3998
Tests and Probe Types on page 3998
Hardware Timestamps on page 3999
Limitations of RPM on EX Series Switches on page 4001

RPM Packet Collection

Probes collect packets per destination and per application, including ping Internet Control
Message Protocol (ICMP) packets, User Datagram Protocol and Transmission Control
Protocol (UDP/TCP) packets with user-configured ports, user-configured Differentiated
Services code point (DSCP) type-of-service (ToS) packets, and Hypertext Transfer
Protocol (HTTP) packets.

Tests and Probe Types

A test can contain multiple probes. The probe type specifies the packet and protocol
contents of the probe.
EX Series switches support the following tests and probe types:
Ping tests:
ICMP echo probe
, jnxPingResultsTable
.)
Copyright © 2010, Juniper Networks, Inc.
, jnxPingProbeHistoryTable ,