This feature gives the possibility to have the best MTU for each session. The benefit of this solution that it works on every platform with the exception of Android.Īn even smarter option Citrix introduces on the background with CVAD 19.12, this is MTU Discovery for EDT. The disadvantage of this solution is that the MTU is lowered for all connections, also it’s needed to figure out which MTU fits best.
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In this article, you can see how to configure EDT for non-standard MTUs e.g. In the recent blog article, I called Citrix “please fix that” but they already started on this at this point. Solution 1: How to configure MSS when using EDT on networks with non-standard MTU It looks like EDT is much more sensible on that than the classic ICA protocol on TCP. So there will be a fragmentation of the packages, in some cases the fragmentation causes problems because the payload is no more enough that a session launch will work. I found out that our branch offices has a smaller MTU than 1500 what is the default, the reason is a crypto-tunnel which is configured to all our branches. (see the recent blog article)įurther analysis of this issue showed that the root cause of this issue is on the MTU, which means the Maximum Transmission Unit or simplified said Package size. But this is not really our intended solution because all the benefits of EDT get lost, so we just did it on client-side with a reg hack, but so we have to identify all the clients with issues. Our first workaround for this issue was to disable the UDP based EDT protocol which is now the default for Citrix Virtual Apps and Desktops.
I wrote a blog article some weeks ago: Issues by accessing Citrix Virtual Apps and Desktops on a pure IPv6 Internet Provider with enabled EDT Desktops were connected from private devices over a Citrix ADC (aka Netscaler) but virtual apps were connected from our internal network from different branch offices. Recently I saw an increased number of issues by connecting to Citrix virtual desktops and apps.
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Only update the default.ica how it’s described below, referencing to if you also are using Citrix Workspace App for Mac in Version 2201 or later!
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