[ANSS-netops] experience with K-2's having internal IP interface cards

[David S. Croker]

Hello all,

Good info about terminal servers.  I like the idea of a ts running 
directly on 12V like the Digi unit.  Like Will Kohler said, we've had 
decent success with MSS100's, but they do occasionally hang.  It 
appears so far that it only happens at sites where we use telco 
telemetry.  I don't seem to recall a site visit (knock on wood) to 
reset an MSS100 at the couple field sites where we have one attached 
to an Ethernet Freewave radio.  One other note is that we almost 
exclusively do not use the power supply that were supplied with the 
MSS100.  We have been using Astrodyne 12-5V DC-DC converters which 
have been very reliable, both in the urban strong motion sites and 
the remote sites.  Can't remember one dying all by itself.  We are 
also very pleased with the FGR-Plus Freewave radios with terminal 
servers built in.  Although we had one fail, they have otherwise been 
pretty stable and it sure is nice not having another device (external 
ts) attached and being able to log into the radios remotely.

Dave

At 12:57 PM 7/22/2008, Dave Drobeck wrote:
>Not much to tell - they work as advertised.  One oddity is that they arrive
>with the "timeout" (essentially packet size) set very small, so you get tons
>of overhead if you don't change that - took awhile before Jon here figured
>that out.   Some of them also use a 10-pin RJ-45-ish connector, which is
>slightly odd.  They're also available in multiport versions of course, and
>some versions do PPP, etc.  Last time I purchased a single-port unit it was
>$125.
>  We've never looked into a correlation between MSS100 hangs and broadcast
>traffic, curious problem.  One thing that was annoying to us about the
>MSS100s is that they're very sensitive to power - and most of the x-former
>supplies that came with them failed on us.
>
>
>On Tuesday 22 July 2008 06:49 am, mwithers at memphis.edu wrote:
> > Can you tell us more about the digi term servers Dave?  We have mostly
> > good luck with the mss100's but ones on domains with lots of broadcast
> > traffic tend to hang.  Our solution is (or is about to be) putting
> > a router in front of it.
> >
> > Mitch
> >
> > Center for Earthquake Research and Information (CERI)
> > University of Memphis                Ph: 901-678-4940
> > Memphis, TN 38152                   Fax: 901-678-4734
> >
> > On Mon, 21 Jul 2008, Dave Drobeck wrote:
> > > Hi Glenn,
> > > We have not used them - we have decided that if we're going to have
> > > problems we'd rather it be with the external device only.   We've had
> > > similar problems - so one thing we have done is switch to mainly Digi
> > > term servers - they have been much more reliable than the MSS-100 and
> > > operate on 9-30 VDC. Dave
> > >
> > > On Friday 18 July 2008 05:28 pm, Glenn Biasi wrote:
> > >> Hi NetOps,
> > >>
> > >> Anyone out there have experience with K2's having internal ethernet
> > >> cards?  We run K2's and Etna's on MSS-100 serial servers, mostly to good
> > >> effect, but sometimes the serial server freezes and requires a site
> > >> visit for  power cycle.
> > >>
> > >> Thanks,
> > >>
> > >> Glenn
> > >
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