Which command configures the router to be the destination of jitter measurements?

An engineer is concerned with the deployment of new application that is sensitive to inter-packet delay variance.

Which command configures the router to be the destination of jitter measurements?
A . Router(config)# ip sla responder udp-connect 172.29.139.134 5000
B . Router(config)# ip sla responder tcp-connect 172.29.139.134 5000
C . Router(config)# ip sla responder udp-echo 172.29.139.134 5000
D . Router(config)# ip sla responder tcp-echo 172.29.139.134 5000

View Answer

Answer: C

Explanation:

Cisco IOS IP SLA Responder is a Cisco IOS Software component whose functionality is to respond to Cisco IOS IP SLA request packets. The IP SLA source sends control packets before the operation starts

to establish a connection to the responder. Once the control packet is acknowledged, test packets are sent to the responder. The responder inserts a time-stamp when it receives a packet and factors out the destination processing time and adds time-stamps to the sent packets. This feature allows the calculation of unidirectional packet loss, latency, and jitter measurements with the kind of accuracy that is not possible with ping or other dedicated probe testing.

Reference: UDP Jitter measures the delay, delay variation (jitter), corruption, misordering and packet loss by generating periodic UDP traffic. This operation always requires IP SLA responder. The command to enable UDP Jitter Operation is “ip sla responder udp-echo {destination-ip-address} [destination-port]