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Catalyst 3750 SwitchSoftware Configuration Guide
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Configuring Cisco IOS IP SLAs Operations
This chapter describes how to use Cisco IOS IP Service Level Agreements (SLAs) on the Catalyst3750
switch. Cisco IP SLAs is a part of Cisco IOS software that allows Cisco customers to analyze IP service
levels for IP applications and services by using active traffic monitoring—the generation of traffic in a
continuous, reliable, and predictable manner—for measuring network performance. With Cisco IOS IP
SLAs, service provider customers can measure and provide service level agreements, and enterprise
customers can verify service levels, verify outsourced service level agreements, and understand network
performance. Cisco IOS IP SLAs can perform network assessments, verify quality of service (QoS), ease
the deployment of new services, and assist with network troubleshooting. Unless otherwise noted, the
term switch refers to a standalone switch and to a switch stack.
Note Switches running the IP base image support only IP SLAs responder functionality and must be
configured with another device that supports full IP SLAs functionality, for example, a Catalyst3750
switch running the IP services image.
For more information about IP SLAs, see the Cisco IOS IP SLAs Configuration Guide, Release 12.4T:
http://www.cisco.com/en/US/docs/ios/ipsla/configuration/guide/12_4t/sla_12_4t_book.html
For command syntax information, see the command reference:
http://www.cisco.com/en/US/docs/ios/ipsla/command/reference/sla_book.html
This chapter has these sections:
•Understanding Cisco IOS IP SLAs, page 43-1
•Configuring IP SLAs Operations, page43-6
•Monitoring IP SLAs Operations, page43-14

Understanding Cisco IOS IP SLAs

Cisco IOS IP SLAs sends data across the network to measure performance between multiple network
locations or across multiple network paths. It simulates network data and IP services and collects
network performance information in real time. Cisco IOS IP SLAs generates and analyzes traffic either
between Cisco IOS devices or from a Cisco IOS device to a remote IP device such as a network
application server. Measurements provided by the various Cisco IOS IP SLAs operations can be used for
troubleshooting, for problem analysis, and for designing network topologies.
Depending on the specific Cisco IOS IP SLAs operation, various network performance statistics are
monitored within the Cisco device and stored in both command-line interface (CLI) and Simple Network
Management Protocol (SNMP) MIBs. IP SLAs packets have configurable IP and application layer