user manual
Table Of Contents
- User Guide for Internetwork Performance Monitor
- Contents
- Preface
- Overview of IPM
- Getting Started With IPM
- Using IPM to Measure Network Performance
- Measuring Network Performance for DHCP
- Measuring Network Performance for DLSw
- Measuring Network Performance for DNS
- Measuring Network Performance for HTTP
- Measuring Network Performance for FTP
- Measuring Network Performance for IP
- Measuring Network Performance for SNA
- Measuring Network Performance for TCP
- Measuring Network Performance for UDP
- Measuring Network Performance for Enhanced UDP
- Modifying IPM Components
- Working With Source Devices
- Working With Target Devices
- Working With Operations
- Working With Collectors
- Adding Components Using Seed Files
- Changing IP Addresses
- Setting the Baseline
- Setting IPM Database Preferences
- Setting SNMP Timeout and Retry Environment Variables
- Setting New IPM Server Process Timeout Values
- Setting the DISPLAY Variable in Solaris
- Backing Up or Restoring the IPM Database
- NVRAM Settings
- Managed Source Interface Settings
- Changing Administrative Password
- Changing IPM Database Password
- Working With Message Log Window
- Working With IPM From the CiscoWorks Homepage
- Accessing IPM Data From the CiscoWorks Homepage
- Viewing IPM Server Information
- Importing Devices From Device and Credential Repository
- Downloading the IPM Client
- Viewing Configuration Information
- Viewing Latency Data
- Viewing Jitter Data
- Viewing HTTP Data
- Accessing Software Updates and Additional Information
- IPM FAQs and Troubleshooting Tips
- IPM Command Reference
- SA Agent Feature Mapping
- Glossary
- Index
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User Guide for Internetwork Performance Monitor
OL-11291-01
Chapter 3 Using IPM to Measure Network Performance
Measuring Network Performance for DHCP
Measuring Network Performance for DHCP
The DHCP operation measures the round-trip latency time taken to discover a DHCP server and obtain
a lease from it. After obtaining an IP address, SA Agent releases the IP address that was leased by the
server. By default, the DHCP operation sends discovery packets on every available IP interface on the
source router.
However, if a specific DHCP server is configured on the router, then discovery packets are sent to only
that DHCP server. The DHCP operation also measures availability and errors for DHCP services.
To measure end-to-end performance for DHCP:
Step 1 Define a device as the source device from which to measure performance. For details on defining a
source device, see Defining a Source Device.
Step 2 To control how statistics are collected, use the DefaultDHCP operation or define your own DHCP
operation. For details on defining a DHCP operation, see Defining a DHCP Operation.
Step 3 Define a collector to measure performance between the source router and the DHCP servers. For details
on defining a collector, see Defining a Collector.If you set the collector’s schedule to On Demand, start
the collector when needed.
Step 4 View the statistics in the DHCP Historical Statistics window. For details on viewing statistics for DHCP,
see Viewing Statistics for DHCP.
Defining a DHCP Operation
IPM provides a default DHCP operation for measuring performance in leasing an IP address from a
DHCP server. In addition, IPM provides the option to create, modify, or delete your own DHCP
operations from the DHCP Operation Configuration window.
To define a DHCP operation:
Step 1 From the IPM Main Window, select Edit > Configuration.
The Configuration window appears.
Step 2 Click Operation.
The Operation Configuration window appears within the Configuration window.
Step 3 Click DHCP.
The DHCP Operation Configuration window (Figure 3-1) appears.