I am looking to set up IP SLA to monitor my WAN performance. Its a converged network so I would like to have some assurance on the VOIP traffic. The router is running IOS 15.1(4), but the IP SLA commands that I would expect to see are not there. I followed a Cisco document as well, but they just aren't there. The only subcommands I have under ip sla are key-chain, responder and server. And the only thing under server is twamp. According the documentation, I should be able to set up ip sla auto (and further subcommands). This is the base IOS, but I have found nothing online that says ip sla is not included in the base IOS. Any assistance would be appreciated.