IBM TSM客户端登陆慢？

在tsm客户端输入dsmadmc命令弹出输入账号后，得过一段时间才出现密码输入，但是登陆TSM后敲命令却不慢。这是为什么呢？
$ dsmadmc
IBM Tivoli Storage Manager
Command Line Administrative Interface - Version 6, Release 2, Level 1.0
(c) Copyright by IBM Corporation and other(s) 1990, 2010. All Rights Reserved.
Enter your user id: admin
--回车后在这里等待时间特别长
Enter your password:*
Session established with server SERVER1: Windows
Server Version 6, Release 2, Level 4.0
Server date/time: 01/09/18 10:06:00 Last access: 01/09/18 09:29:04