which port does a Cisco IOS IP SLA source use to send a control message to an IP SLA responder? seenagape 9 years ago To initiate testing, which port does a Cisco IOS IP SLA source use to send a controlmessage to an IP SLA responder? A. UDP port 2020 B. UDP port 1967 C. TCP port 2020 D. ICMP port 1967 ← Previous question Next question →