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Forum Discussion

khamlat_316003's avatar
khamlat_316003
Icon for Nimbostratus rankNimbostratus
Jun 01, 2017

iRule - UDP payload/Netflow

I would like to create an iRule to look for [example] flowset length count in my UDP payload and forward traffic to a certain pool member based on that flowset length count.   Can someone assist?...
application delivery
iRules
LTM
Niels_van_Sluis's avatar
Niels_van_Sluis
Icon for MVP rankMVP
Jun 03, 2017

I think you need to do something with 

UDP::payload
and 
binary scan
. For more info on these topics see:

You could use something like this to grab the flowset length and do something based on the lenght you have captured from the packet.

when CLIENT_DATA {
    skip packet header and flowset id
    set field_offset 22
    get flowset length
    binary scan [UDP::payload] @${field_offset}S flowset_length
}