This integer, constrained to 10-300 seconds, sets how long the LES waits for an LE client's Join request to complete before timing it out. An admin cares because on ELANs with many clients or slow ATM signaling, a too-short timeout can cause legitimate but slow-to-respond clients to be rejected as failed joins, while too-long a timeout delays detection of genuinely unresponsive clients. For example, setting this to 30 seconds gives clients on a congested ATM switch more room to complete the join handshake than the aggressive low end of 10 seconds would.