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SNMP Support for RTS VDC? [message #1339] Wed, 07 April 2021 11:22 Go to next message
ryan.smith is currently offline  ryan.smith
Messages: 2
Registered: April 2021
Junior Member
I have a customer that wants remote configuration of a Device Master RTS VDC through our software interface. The spec sheet lists SNMP as being supported, but I can not find any information related to the SNMP operation of a DeviceMaster - with the exception of how to enable/disable SNMP. Is there any documentation available related to the SNMP capabilities? Is there a MIB file for the device?
Re: SNMP Support for RTS VDC? [message #1340 is a reply to message #1339] Wed, 07 April 2021 11:30 Go to previous messageGo to next message
Kurt is currently offline  Kurt
Messages: 288
Registered: July 2016
Location: Minnesota
Power User
Hi,

We only do minimal SNMP support.

Comtrol uses an industry standard SNMP V2 MIB II. Hence we do not
issue a custom MIB.

The Information below applies to our DeviceMaster RTS, Serial Hub, and
Pro products.

Here is a little background information.

The Management Information Base (MIB)
is a definition of a set of values that an SNMP "agent" monitors and the
structures with which the agent reports those values to an SNMP
"station" or "management station". The implementation of the MIB in the
agent is integrated into the agent implementation. There is no "MIB
file" on the agent side. We have implemented an SNMP Version 2 agent in
the DeviceMaster RTS. It supports a minimal standard MIB commonly know
as MIB II. MIB II defines a set of values for monitoring the Ethernet
interface and the TCP/IP protocol stack. The definition of MIB II is RFC
1213 which can be obtained from:

<http://www.cis.ohio-state.edu/cgi-bin/rfc/rfc1213.html> .

Among the things MIB II does not include is monitoring of the serial
ports. Our SNMP implementation does not do that.
MIB II and all other MIBs are defined using a formally defined notation
called Abstract Syntax Notation One (ASN.1). The ASN.1 MIB definition is
commonly used with an ASN.1 "MIB compiler" to extend the set of
definitions known to a management station.

This may be what someone is calling the "MIB file". We do not have a MIB
II definition to supply, nor should anyone have any need to get one from
us. MIB II is the least common denominator of MIBs. A management station
that comes without MIB II implemented is difficult to imagine. If it
exists, and they have one, they bought the wrong thing. Further, the
complete ASN.1 definition of MIB II is in RFC 1213. That's where they
should get it if they need it.

SNMP defines methods for providing enterprise unique monitoring
capabilities. Many vendors provide so-called "Enterprise MIBs"
implementing SNMP management of properties unique to their product. Part
of providing an Enterprise MIB is providing the ASN.1 definition of that
MIB so that customers can add it to their SNMP management station by the
process described above. We have no Enterprise MIB.
Another possibility is that they are asking for the "RS232 MIB" defined
in RFC 1659 "Definitions of Managed Objects for RS-232-like Hardware
Devices using SMIv2". We have not implemented that MIB.

The only MIB we have implemented is universally implemented, there is
nothing for us to add to it.

Additional Info

Technical Overview from the O/S perspective
https://files.comtrol.com/dev_mstr/rts/software/redboot/user _guide/ecos-2.0_redboot.pdf
(Starting at page 615)


Kurt Rees
www.comtrol.com
http://forum.comtrol.com/

Comtrol Corporation
100 Fifth Ave NW
Minneapolis, MN. 55112
Direct +1 763.957.6000 | +1 Fax (763) 957-6001
connect. communicate. control
Re: SNMP Support for RTS VDC? [message #1341 is a reply to message #1340] Wed, 07 April 2021 15:23 Go to previous messageGo to next message
ryan.smith is currently offline  ryan.smith
Messages: 2
Registered: April 2021
Junior Member
Thank you for that detailed response. Is there any external interface that the RTS supports that will allow configuration and monitoring of the serial port interface? Or is that really only done through PortVision and the web interface?
Re: SNMP Support for RTS VDC? [message #1343 is a reply to message #1341] Thu, 08 April 2021 07:31 Go to previous messageGo to next message
Kurt is currently offline  Kurt
Messages: 288
Registered: July 2016
Location: Minnesota
Power User
Hi,

Yes, it is possible to monitor a serial port. The DeviceMasters only monitor 1 serial port at a time, however.
We can monitor via a telnet session in Putty or what other application you'd like.

Here is a link that will provide instructions:

https:// files.comtrol.com/contribs/devicemaster/help_files/tracing/m onitor_serial_data_in_devicemaster_using_putty_to_log_file.p df

Kurt


Kurt Rees
www.comtrol.com
http://forum.comtrol.com/

Comtrol Corporation
100 Fifth Ave NW
Minneapolis, MN. 55112
Direct +1 763.957.6000 | +1 Fax (763) 957-6001
connect. communicate. control

[Updated on: Thu, 08 April 2021 07:32]

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Re: SNMP Support for RTS VDC? [message #1346 is a reply to message #1341] Mon, 12 April 2021 13:15 Go to previous message
Ed is currently offline  Ed
Messages: 4
Registered: July 2019
Junior Member

Hello,

The RTS device is configured and monitored through PortVision or the website. Putty or Telnet can be used to monitor the output of each port.
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