DFS Protocol Details

Don McCall donmccall1 at yahoo.com
Wed Aug 17 17:20:46 GMT 2005

Hi Michael,
Some (most MS) clients do dfs referral cacheing.  I have seen this before myself.  In fact some older clients cache persists even AFTER a local client logoff - see MSKB article: 
So if the client already has the dfs share cached, it will go straight to the target, and you won't see the PATH_NOT_COVERED...
Hope this helps,
Michael B Allen <mba2000 at ioplex.com> wrote:
I'm seeing some DFS behavior that I cannot explain. Instead of the usual
try > PATH_NOT_COVERED > referral > try w/ new target style protocol,
captures show that the clients already know the target is in DFS. At first
I thought operators simply were not capturing the PATH_NOT_COVERED part
but now I think there must be some additional protocol. Does anyone know
how these clients populate their DFS mappings? What am I missing here?


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