This caps how many times SCTP will retry sending the INIT or COOKIE-ECHO chunks during association setup before giving up entirely, with 8 attempts as the RFC-recommended default. It directly determines how long a client will keep trying to establish an SCTP association against an unreachable or overloaded peer before reporting failure, which matters for how quickly a signaling application can fail over to a backup path. Lowering this to 3 on a device fronting an active-standby signaling pair would make failover detection noticeably faster at the cost of being less tolerant of brief transient packet loss during setup.