2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 <2021> 2022 2023 2024 | Index | 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 <2021> 2022 2023 2024 |
<== Date ==> | <== Thread ==> |
---|
Subject: | CA gateway chaining |
From: | Timo Korhonen via Core-talk <core-talk at aps.anl.gov> |
To: | EPICS Core Talk <core-talk at aps.anl.gov> |
Date: | Mon, 25 Oct 2021 08:35:11 +0000 |
Hi, We at ESS are using CA gateways in a “chain” configuration, i.e., roughly in the following way: Machine (aka Technical) network -> gateway A-> internal DMZ -> gateway B-> office network. Does any of you have any experience with such a configuration? What we have been seeing are somewhat oddly constant access delays, for instance caget taking more or less exactly one second to read an otherwise idle PV via gateway B. Not surprisingly, this appears to be related to the traffic on the networks (i.e., machine operation.) We have not yet done any systematic studies on this, I just thought to ask if anybody has experience or thoughts about this kind of issue.
Is this usage pattern something that should rather be avoided? Cheers, Timo |