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

[Jamie Dahl]

enable source-nat..(if possible..) but have you also read up on using the
"real-port" feature under the VS?

server real blah x.x.x.x
port a
port b
server virt blah x.x.x.x
port a
port a real-port a
bind a blah1 b

We're using that under limited deployment b/c of other issues (w/
healthchecking)..  This can also be used if you want the VIP to be one
port, but the servers all run a different port too..there are many
applications for this setup, if only FDRY would figure out the bugs...



On Tue, March 20, 2007 16:25, png rhg wrote:
> 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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-- 
Jamie Dahl

"Thousands of tired, nerve-shaken, over-civilized people are beginning to
find out that going to the mountains is going home; that wilderness is a
necessity; and that mountain parks and reservations are useful not only as
fountains of timber and irrigating rivers, but as fountains of life."
--John Muir