UDP echo accuracy is enhanced by using the Cisco IP SLAs Responder at the destination Cisco IP SLAs Configuration Guide, Cisco IOS XE Release 3S. 1Catalyst 2960 Switch Software Configuration Guide supports only IP SLAs responder functionality and must be configured with another device that supports. 5 Nov 2012 Configuring the IP SLAs Responder on a Destination Device 52. Configuring and Scheduling an IP SLAs VoIP UDP Jitter Operation 53. Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipsla/configuration/xe-3e/sla-xe-