SCTP ABORT sent for SCTP COOKIE_ECHO during load test

Issue

• Setup nearly 30K SCTP associations from different SCTP Client IP addresses. After roughly 16-19K SCTP associations are established, SCTP server is sending SCTP ABORT when Test Simulator sends SCTP COOKIE_ECHO
• The issue is less pronounced if we use single IP address pair and different SCTP ports from clients. i.e. only one client server pair.