This read-write INTEGER (0-30 seconds) sets how long the switch waits for this specific TACACS+ server to reply before giving up, with 0 meaning defer to rlTacacsGlobalDefaultTimeout instead. An admin cares because too short a timeout on a slow WAN link to a remote TACACS+ server can cause spurious authentication failures and unwanted failover to a backup server. For example, an admin whose TACACS+ server sits across a high-latency satellite link might raise this value above the default so slow replies aren't mistaken for a dead server.