Re: communication issue

["Wlodek, Jakub via Tech-talk" <tech-talk at aps.anl.gov>]

Hi Alex,

Is your system firewall configured to not allow UDP traffic on port 5065 on the interfaces listed? You may also want to limit which interfaces are used by CAS with environment variables:

https://epics.anl.gov/EpicsDocumentation/AppDevManuals/ChannelAccess/cadoc_4.htm#MARKER-9-2

Best,

Jakub

---

From: Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of Tran, Phi Dung via Tech-talk <tech-talk at aps.anl.gov>
Sent: Friday, March 1, 2024 2:35 PM
To: tech-talk at aps.anl.gov <tech-talk at aps.anl.gov>
Subject: communication issue

 

Hi,

I am getting this message output from st.cmd below.  Do you have any suggestions.

Thank you,

Alex

drvAsynIPPortConfigure ("OC_SP", "255.255.255.255:4004:4004 UDP", 0, 0, 0)

# Commands

drvAsynIPPortConfigure ("OC_CMD", "10.67.146.77:4004 UDP*", 0, 0, 0)

## Load record instances

dbLoadRecords("/epics/iocs/cs700/db/cs700.db", "P=cs700:,Q=CS,PORT=OC_SP,PORTCMD=OC_CMD")

dbLoadRecords("/usr/lib/epics/db/asynRecord.db","P=cs700:,R=CS:ASYN:SP,PORT=OC_SP,ADDR=0,OMAX=1000,IMAX=1000")

dbLoadRecords("/usr/lib/epics/db/asynRecord.db","P=cs700:,R=CS:ASYN:CMD,PORT=OC_CMD,ADDR=0,OMAX=1000,IMAX=1000")

iocInit()

Starting iocInit

############################################################################

## EPICS R7.0.5

## Rev. R7.0.5-dirty

############################################################################

cas warning: Configured TCP port was unavailable.

cas warning: Using dynamically assigned TCP port 37299,

cas warning: but now two or more servers share the same UDP port.

cas warning: Depending on your IP kernel this server may not be

cas warning: reachable with UDP unicast (a host's IP in EPICS_CA_ADDR_LIST)

iocRun: All initialization complete

CAS: CA beacon send to 10.67.146.255:5065 error: Operation not permitted

## Start any sequence programs

CAS: CA beacon send to 10.67.144.255:5065 error: Operation not permitted

#seq snccs700,"user=ptran1"

CAS: CA beacon send to 10.67.145.255:5065 error: Operation not permitted