Lightboard Lessons: F5 BIG-IP DNS (GTM) iQuery Protocol Overview

In this episode of Lightboard Lessons, I introduce iQuery, the F5 proprietary protocol utilized by BIG-IP DNS to exchange system configuration with other BIG-IP DNS systems and performance metrics wi...
Published Aug 09, 2017
Version 1.0
application delivery
BIG-IP DNS
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vladimir_klepc1's avatar
vladimir_klepc1
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Nov 26, 2018

Hi Jason. I'm confused how both CMI (DSC) and iquery(big3d) use same tcp port 4353. According the https://support.f5.com/csp/article/K17333 : CMI uses the same port as iQuery tcp:4353, but is independent of iQuery and the port configuration options available for the port. If you are using iQuery, you must allow port 4353 in your port lockdown settings.

 

How can the two different applications use the same tcp/4353 port?