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Forum Discussion

Matthew_Gamble_'s avatar
Matthew_Gamble_
Icon for Nimbostratus rankNimbostratus
Mar 12, 2009

TFTP Server?

Is it possible to write a simple TFTP server as an iRule to return static content? I see some examples for load balancing TFTP requests, but not for actually acting as a TFTP server. I have a very s...
application delivery
dev
devops
iRules
James_Quinby_46's avatar
James_Quinby_46
Historic F5 Account
Mar 12, 2009
Interesting question. I'm looking at a simple TFTP server written in Tcl (http://wiki.tcl.tk/12711) and trying to discern whether or not this is doable. There is also an iRule posted to the codeshare repository that helps do LB for tftp servers (http://devcentral.f5.com/wiki/default.aspx/iRules/TFTP_Load_Balancing.html).

 

 

It's probably possible to do this, though I'm wondering how the encoding of the file in chunks can be done most efficiently. There's an example of a simple UDP server implemented in an iRule here:

 

 

 

http://devcentral.f5.com/wiki/default.aspx/iRules/fast_DNS.html

 

 

...that returns an immediate answer from the LTM to certain DNS queries.