KeyWords:CiscoWorks 2000 Error JRE 3550 这天打开CiscoWorks的Topology Service被吓一跳，Unknown Error? 怎么办？打开Server Configuration / Diagnostics / Analyze ANI Server 看看，ANI Server明明还是正常运行的嘛...Server Configuration里的SNMP Setting等等也设置不了，同样提示ANI Server可能没有在运行。 种种猜测，反复尝试，未得其解。上到cisco网站一看，看到一个旧补丁：CiscoWorks2000 Server CD-One Patches ，Readme中有如下描述： The CD One, 4th Edition patch contains the java Plug-in 1.3.1. It fixes a bug in Java Plug-in 1.3.0 that will cause certain functions of CiscoWorks2000, sUCh as Telnet, PRint, Save, and Save As, to fail when run from a browser. This will occur after the certification eXPires on January 6, 2002. After January 5, 2002, you might see a Security Warning message, which is harmless and will not affect functionality. If you see this message, click Yes to proceed... 安装这个补丁并没有解决这个问题，照着这个思路，可以怀疑现在出现的问题仍然是Java Plug-in的安全授权过期引起的，到java.sun.com下载了一个最新的JRE:j2re-1_3_1_04-windows-i586-i.exe(不能用1.4.1的)，安装上去，问题解决了！
