[f-nsp] Silly many-to-one redirection with csw-policy

[png rhg]

I have a need to bind the same real server port to multiple virtual servers
while maintaining port translation (based on a csw-policy).  Of course it's
not so simple as to just bind the real port twice -- once to each VS.  So I
started looking at what is referred to as a "many-to-one" binding, as so
called by the Foundry folks, and the associated alias port shuffle.  I did
some tests and I can get this to work for situations where port translation
isn't required, however, I kinda really need both functions at the same
time.

Here's a summary:
1.  Requests are made to a VIP on the SI on port 8500.
2.  URI matching/parsing is performed via csw-policy to determine where the
traffic should be sent (forward <group-id>)
3.  Most applications reside on a single physical host (host1)
4.  One applications resides on a different host (host2) and is already
bound to another RS.

Port translation is required for all traffic to the real servers (blame the
developers).  Host2 runs an application that's required for another
application and can not easily be replicated on a new host (blame
management).

Ultimate question:  Is there a way to combine alias ports, port translation
and content switching all in some neat package?  Heck, it doesn't event have
to be a neat package.

Environment:  ServerIron GT-E, ver. 9.4.00s

Suggestions appreciated.  Solutions desired.


- Pat
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