xdmcp connection failed by cat [3]

I tried to connect AIX by the method of xdm query in windows XP, but the result was xdmcp connection failed. but other PCs of windows XP can did it successful by same configure. some troubles in my windows XP? for your help and thanks!

and my XP's firewall had been diable!

the ip of AIX is 10.0.1.10 and the XP's is 10.0.1.15

Please read FAQ #1 at:

/support/faq.html

Specifically, your IP address might be mapped to an invalid name in the name server. Please check the ip-to-name and name-to-ip tables in your name server.

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Technical Support