On 2/16/21 12:25 PM, Kevin Peterson via Tech-talk wrote:
> Olivier,
>
> I've seen CA misaligned protocol errors on IOCs at the APS in the past. I believe they were caused by network security scans run by the IT group. There was a strong correlation between the error messages and shutdown days, which is the only time IT scans the beamlines.
cf. another recent example https://epics.anl.gov/tech-talk/2021/msg00072.php
The exact wording the the warning depends on the Base version(s) involved.
Seeing messages like this occasionally is almost certainly a non-CA client attempting
to connect to a CA server. Actual CA clients retry continually, so any real problem
would be much more verbose.
> IOCs usually didn't need to be restarted after the errors occurred. I believe Windows IOCs were the exception. I vaguely recall the scans crashing Windows IOCs.
Any misbehavior associated with malformed message warnings should be reported as a bug.
> Kevin
>
>
> On 2/16/21 5:15 AM, Delahaye Olivier via Tech-talk wrote:
>> Hi,
>>
>>
>> I'm working at GANIL in Caen, France.
>>
>> We are currently using EPICS 3.14.12.4. We are facing issues about UDP CAS. (UPD: "CAS: Missaligned protocol rejected).
>>
>> For that, we are wondering whether or not it would be interesting to switch on a more "up to date" version.
>>
>>
>> I would like to know what is the latest "stable" version of EPICS ?
>>
>> I read in your download page there was "stable" versions and "current" versions. What are exactly the differences between "current" and "stable" ?
>>
>> Are current versions stable or not ?
>>
>>
>> Thx for your answer,
>>
>> Olivier Delahaye
>>
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