Experimental Physics and
Industrial Control System

Thank you guys, for all your help.

I am trying to integrate and monitor the Lantime M300/GPS device.

I confirm it works as expect.

 

One of my records in the db is now:

record(longin, "$(P)$(R)NtpCurrentState") {

  field(DESC, "Status of NTP")

  field(DTYP, "Snmp")

  field(SCAN, "5 second")

  field(INP,  "@$(HOST) $(COMMUNITY) $(MIB)::mbgLtNgNtpCurrentState.0 ( 100 i")

}

 

I had to add .0 or .1 in my INP field.

I also added MIBDIRS macro as suggested Michael and remove -c flag as suggested John.

Thank you for pointing me a new version 1.1.0.1

 

Cheers

Tomasz Brys

European Spallation Source ERIC

 

 

From: Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of Pierrick M Hanlet via Tech-talk <tech-talk at aps.anl.gov>
Reply-To: Pierrick M Hanlet <hanlet at fnal.gov>
Date: Friday, 21 May 2021 w:20 at 16:30
To: "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov>
Subject: Re: SNMP in EPICS

 

Hi Tomasz,
One way in which snmpwalk and snmpget differ is that snmpwalk doesn't specify a specific channel.
However, if you'll notice, it returns MBG-SNMP-LTNG-MIB::mbgLtNgRefclockState.1; note the ".1".  You might
try snmpget with and without it; if my suspicion is correct, then you'll need to add it to your address in the
INP field.
Cheers,
Pierrick

On 5/21/21 3:13 AM, Tomasz Brys via Tech-talk wrote:

Hi,

I have a problem how to implement SNMP protocol in EPICS.

I want to keep MIB file somewhere in the module, not in the /usr/share/snmp directory.

If I run snmpwalk I can:

snmpwalk -v2c -M +/vagrant/modules/e3-M300_GPS/M300_GPS/M300_GPSApp/MBG-SNMP-MIB -m All -c comm 192.168.XXX.XXX MBG-SNMP-LTNG-MIB::mbgLtNgRefclockState

and I get output:

MBG-SNMP-LTNG-MIB::mbgLtNgRefclockState.1 = INTEGER: synchronized(1)

 

How should I define my record in Db?

I did it like that:

record(longin, "$(P)$(R)RefclockState"){

  field(DESC, "Status of GPS refclock")

  field(DTYP, "Snmp")

  field(SCAN, "5 second")

  field(INP,  "@$(HOST) $(COMMUNITY) $(MIB)::mbgLtNgRefclockState Integer: 10")

}

Where:

$(HOST) = 192.168.XXX.XXX – this is of course fake address

$(COMMUNITY) = -c comm

$(MIB) = MBG-SNMP-LTNG-MIB

 

But I got error:

devSnmp: error parsing '192.168.XXX.XXX -c comm MBG-SNMP-LTNG-MIB::mbgLtNgRefclockState Integer: 10'

         format is 'host community oidname mask maxdatalength [set_format/special]'

Error (511,511) PV: P:R:RefclockState devSnmpLi (init_record) bad parameters

 

Any help how I can do this?

 

Best regards

Tomasz Brys

European Spallation Source ERIC

-- 

Pierrick Hanlet

Fermi National Accelerator

Accelerator Front End Controls

+1-630-840-5555 -- lab

+1-312-687-4980 -- mobile

"Whether you think you can or think you can't, you're right" -- Henry Ford