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Configure SMB to work with Application Load Balancer

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					      How-to:

           Configure SMB to work with

             Application Load Balancer




Author:    Andrew Knowlson
Review:    Oliver Gross
Version:   2.0
Date:      5th May 2010
jetNEXUS Makes Applications Fly!



Synopsis:
This document details how to configure SMB on the jetNEXUS ALB


Contents:
   •   Setting up the new SMB IP Service.
   •   Adding additional ports for SMB Shares.
   •   Testing.
   •   Load balanced SMB.




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Setting up the new SMB IP Service.
Open the web portal

On the left menu panel click on IP Services




Click add IP Address




You will now be presented with a blank interface:




Add your Listening IP address, subnet mask and port.




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Ensure Data is set to Layer 4




Ensure monitoring is set



To complete testing ensure that IP Based is selected



Add your SMB server, this is the server where your SMB share resides. Ensure that
the port matches that of the listening interface.




Your Rule should then look like the following:




Click Update then refresh




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Adding additional ports for SMB Shares.
We now need to add the other ports for SMB

138
139
389
445

Click the Add Port on our current IP Service




Ensure the same settings are enabled on the new port




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Repeat this process until your rule looks like the following, as you can see I have
filled in the Service description for each service




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Testing.
From your local workstation:

Confirm you can ping your load balanced IP




When the ping responds, this signifies that the listening IP has been raised.

Open windows explorer, and go to Tools > Map Network Drive




Select a drive letter




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Type the load balance IP \your selected share




Windows should then try to access the server share




You will then be challenged for a username and password for the resource




Once you have typed your username and password the share should appear in
windows explorer




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Load balancing.
Now we have proved connectivity we need to add more content servers

On the left menu panel click on IP Services




On each of the current Server groups you will need to select




Add your secondary server and ensure the port again matches, complete this for
each port.




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jetNEXUS Makes Applications Fly!


Once completed your rule should look like the rule below




You can now select the type of Load balancing you wish to enable




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You will have to ensure that your destination servers have the same share names
to ensure load balancing works correctly between each server.

jetNEXUS lab network layout for SMB shares as described above




I hope you have found this How-to informative, but if you need any clarification or
further information, please do not hesitate to get in contact with jetNEXUS
support@jetnexus.com.




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