UDP TCP Packet Duplication

Hi, I tried this for duplicate mysql traffic but I can't login to DBs after do it! Can you help me?

Thanks.

This iApp should not be used. It uses a virtual server as a pool member, which is not supported.

A better way to approach the same goal would be to use a single virtual server and distribute to multiple HSL destinations - more control over how packets are distributed within those distributions could be achieved using a Log Publisher and Remote HSL Log Destination rather than a pool.

If you ever need an iApp based on this template to duplicate traffic to virtual servers instead of to pool or nodes. Below is the procedure I used.

Create an iApp with dummy values for the “Destination Server Questions” section during creation

Uncheck the strict updates on the iApp to make manual changes

Replace the dummy string records created by the iApp in the data gorup with the virtual server names that you want the traffic to be duplicated to. The label values will not be used 

Data group string records should look like this

Change this iRule (name should be ending with “_distribute” ) with the one below

when CLIENT_ACCEPTED {

               binary scan [UDP::payload] ssssa256a* a b c d destinationwithpad data

               #log "sending from $a.$b.$c.$d to pool: $destinationwithpad"

               UDP::payload replace 0 [UDP::payload length] $data

               snat "$a.$b.$c.$d"

               #get just dest without pad

               set destination [findstr $destinationwithpad "" 0 "~"]

               #log $destination

                set nodeandport [split $destination ":"]

               virtual [lindex $nodeandport 0]

}

Duplicated traffic would be sent to the virtual server name listed on the data group

Hi

I am using the tool, however it creates an IPv6 address with the IP I am providing in: What IP address do you want to use for this virtual server?

Is it possible to use it on IPv4?

Thanks

awilhelm - Can you please elaborate on this HSL method for UDP packet duplication and distributing?  We are looking at upgrading from 14x to 16x, though I have not tested in the lab yet, I'm suspect of this iAPP continueing to work.  Plus, iAPPs are on the way out being replaced with FAST and AS3, as I understand it. 

steve2 sure. You can use the UDP_DATA event and UDP::payload command in iRules to retrieve the UDP payload, then use HSL (or sideband commands) to send it. HSL commands in iRules do not do any formatting.

Was the snippet removed? 

it looks like it was removed by the author. I have v1 in a zipfile, hit me at j.rahm@f5.com if you want a copy to study/modify. awilhelm's advice stands, shouldn't use it as is.