This sets, in seconds, how long the device waits for a response before retransmitting a request to the TACACS server. Because this governs every TACACS-authenticated login attempt on the device, setting it too short against a TACACS server across a slow WAN link can cause legitimate login attempts to be needlessly retried or to fail outright before the server has a chance to respond, directly affecting how long an admin waits to get a CLI prompt. For example, a value of 3 seconds might work fine for a local TACACS server but could cause repeated login delays or failures if that same server is later moved to a remote data center with higher round-trip latency.