[SBE] Net Guardian SNMP Monitoring

[Albert Muick]

Hi again Kim,

Well, I think we pretty much have an idea of the biggest part of your
problem.  SNMP was made to be used over TCP/IP, i.e. a LAN.  Both devices
(your NetGuardian and whatever you are trying to control) have to be on the
same net or subnet, and you could try a crossover cable (RJ-45) between them
to set up a simple network for testing purposes. It's not gonna work over
RS-232.

Your UPS will have to have a LAN/NIC card, of course, or it will not be able
to be controlled or connected to the LAN.  Many office printers also have
these LAN/NIC cards and will respond to SNMP.  It might be good to poll them
first to see if you get a response before you try sending commands.

When I was speaking of switches and routers, I was meaning the Cisco, Avaya,
etc. types, and not the ones for household use, although they too may at
least be able to be polled via SNMP.

This sure would be easier if we could send ourselves along with the email to
assist our fellow engineers!  LOL

By the way, kudos to Roberto Londono-Echeverry for also jumping in with
assistance.  This is why I love the SBE!

While the entire protocol structure is too much to get into in this
discussion group, you could check http://support.microsoft.com and their
TechNet if you have access, for some primers on SNMP.  A good network
engineering reference book is also invaluable if you're gonna be dealing
with this stuff.

I'll be monitoring the bounces and let me know if there's anything else I
can help with or if you run into any major obstacles.

Al Muick

-----Original Message-----
From: sbe-bounces at sbe.org [mailto:sbe-bounces at sbe.org] On Behalf Of Kim
Sacks
Sent: Thursday, June 26, 2008 5:46 PM
To: sbe member discussion mail list
Subject: Re: [SBE] Net Guardian SNMP Monitoring

Thanks for the quick response Al. I'm so glad I finally found someone that
might be able to help me with this.

I tried to connect the Net Guardian to my APC Smart UPS 1000 via the RS232
connector. The manual for the UPS said it was SNMP enabled, but I was unable
to get the Net Guardian to "see" the UPS. At the time that UPS was the only
thing I had in my shop with SNMP. Sadly, that UPS was killed in a recent
electrical storm. I didn't think of using a crossover cable or null modem
cable at the time, that may have been my problem. Now I need to find a piece
of inexpensive equipment, or borrow something from a client so I can
continue to experiment with SNMP.  What would you recommend to test with? I
have a few consumer (home network) linksys routers laying around, do you
think one of those would work for my testing purposes?

-- 
Kim Sacks, KB3MZX
http://youtube.com/user/RadioCtrlDWife
www.optimod.fm

On Thu, Jun 26, 2008 at 4:21 PM, Albert Muick <
radioresearch_field_operations at yahoo.com> wrote:


> Hi Kim,

>

> The NetGuardian is an SNMP-capable unit, and I believe the larger APC

units

> as well as the GE SiteMaster units are SNMP controllable.

>

> I'm missing some info from your post...did you have both the NetGuardian

> and

> the UPS configured with IP addresses over the customer's network, or did

> you

> simply connect one to the other?  If you did that, you may need a

crossover

> cable to bypass the need for connecting them through a network.  (You can

> tell by the lack of activity on the NIC cards when they are jacked

> together).

>

> SNMP (Simple Network management Protocol) is a standard and is not too

hard

> to work with, provided you have all the stuff you need.  Maybe if we can

go

> a little further with your test fixture, I or someone else can help you in

> greater detail.  I know you said you sat through the DVD tutorials, so

> maybe

> the problem is something else.

>

> Routers, switches, etc., are also usually SNMP controllable/configurable.

>

> Al Muick CBRE

> MCSE, MCSA, A+, Network+

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