Experimental Physics and
Industrial Control System

Sean Leavey via Tech-talk <tech-talk at aps.anl.gov> · Tue, 20 Sep 2022 09:16:07 +0100

Hi Marco,

I had some troubles caused by different subnets a couple of weeks ago:

https://epics.anl.gov/tech-talk/2022/msg01375.php

Some commands are mentioned in that thread that can help diagnose what's

going on on the network, e.g. tcpdump, nmap, etc.

Cheers,
Sean

On 19/09/2022 15:42, Marco A. Barra Montevechi Filho via Tech-talk wrote:

Hello all.

I have two IOC servers and inside server 1 im trying to caget a PV from

server 2. They are not in the same subnet.

I can caget PVs from server 2 from other servers so im guessing problem

is in server 1. Inside server 1 i make:

export EPICS_CA_ADDR_LIST="$EPICS_CA_ADDR_LIST <IP_from_server_2>"
caget <MY_PV>

and i get:
Channel connect timed out: '<MY_PV>' not found.

Server 2 is a Debian 9.11 and server 1 is Debian 10. nftables or

iptables commands are not recognized in server 1 so i have no ideas on

how to look for my firewall configurations.

Any tips on how to debug this? Thanks in advance 🙂

Marco

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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System