Generate "Voice-Like" Packets by IP SLA in a Cisco Router

This can be handy in infrastructure designing for VoIP, QoS verification and troubleshooting.
This can be achieved by IP SLA.. As you can see on the following image, there are many IP SLA operations to do these kind of work.

In our example, I using the udp-jitter operation..










I am going to generate packets of g729a codec with control packets to the destination IP address 2.2.2.2 with port number 16384.

ip sla 1
udp-jitter 2.2.2.2 16384 codec g729a control enable
threshold 1000
timeout 1000
frequency 1
!
ip sla schedule 1 life forever start-time now

Frequency of 1 means that the operation will start over every 1 second.
Final command starts running the IP SLA..

Note:-

Destination port numbers for VoIP calls are UDP 16384 - 32767