Understanding Real-Time Performance Monitoring on EX Series Switches
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
,
jnxPingResultsTable
,
jnxPingProbeHistoryTable
,
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 3700
•
Tests and Probe Types on page 3700
•
Hardware Timestamps on page 3701
•
Limitations of RPM on EX Series Switches on page 3703
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
Copyright © 2010, Juniper Networks, Inc.
3700
Complete Software Guide for Junos
®
OS for EX Series Ethernet Switches, Release 10.3
Summary of Contents for JUNOS OS 10.3 - SOFTWARE
Page 325: ...CHAPTER 17 Operational Mode Commands for System Setup 229 Copyright 2010 Juniper Networks Inc ...
Page 1323: ...CHAPTER 56 Operational Mode Commands for Interfaces 1227 Copyright 2010 Juniper Networks Inc ...
Page 2841: ...CHAPTER 86 Operational Commands for 802 1X 2745 Copyright 2010 Juniper Networks Inc ...
Page 3367: ...CHAPTER 113 Operational Mode Commands for CoS 3271 Copyright 2010 Juniper Networks Inc ...
Page 3435: ...CHAPTER 120 Operational Mode Commands for PoE 3339 Copyright 2010 Juniper Networks Inc ...
Page 3529: ...CHAPTER 126 Operational Mode Commands for MPLS 3433 Copyright 2010 Juniper Networks Inc ...