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| <== Date ==> | <== Thread ==> |
|---|
| Subject: | UDP Warnings (VME and Linux) - Subnet wide |
| From: | "Sullivan, Joseph via Tech-talk" <[email protected]> |
| To: | EPICS tech-talk <[email protected]> |
| Date: | Fri, 24 May 2019 21:16:03 +0000 |
|
Hello,
The following warning messages are appearing periodically (~2hrs) on all the EPICs IOC's (VxWorks and Linux -
base-3.14.12.3) on a beamline here at the APS - (base-3.14.12.3).
../udpiiu.cpp: Undecipherable (payload too small) UDP msg from 169.254.0.2:3956 ignored
../udpiiu.cpp: Undecipherable (payload too small) UDP msg from 169.254.132.146:3956 ignored
../udpiiu.cpp: Undecipherable (payload too small) UDP msg from 169.254.0.2:3956 ignored
../udpiiu.cpp: Undecipherable (payload too small) UDP msg from 169.254.0.2:3956 ignored
../udpiiu.cpp: Undecipherable (payload too small) UDP msg from 169.254.0.2:3956 ignored
../udpiiu.cpp: Undecipherable (payload too small) UDP msg from 169.254.0.2:3956 ignored
../udpiiu.cpp: Undecipherable (payload too small) UDP msg from 169.254.0.2:3956 ignored
../udpiiu.cpp: Undecipherable (payload too small) UDP msg from 169.254.132.146:3956 ignored
../udpiiu.cpp: Undecipherable (payload too small) UDP msg from 169.254.132.146:3956 ignored
Eventually the CAS-Event processes fail (after a day or so). A reboot brings everything back and the sequence starts over.
This happened after the IOCs where brought up after a shutdown period.
Is this a network issue (someone on the CA ports that should not be) or should I look at the CA Clients (medm)?
Thanks for any help.
Joe
Joseph Sullivan
[email protected] <> 630-252-8657
Advanced Photon Source
APS Xray Science Division
Beamline Controls & Data Acquisition Group
|