Re: [foxboro] Running Manual Cable Test - Automatically?
- From: Kevin Fitzgerrell <fitzgerrell@xxxxxxxxx>
- To: "foxboro@xxxxxxxxxxxxx" <foxboro@xxxxxxxxxxxxx>
- Date: Tue, 5 Feb 2013 12:16:16 +0800
Barry,
I'll echo Shawn and Brian's V7 experiences - in all the instances I've seen
where V7 systems experienced slowdowns that were fixed by running the cable
test (which is every V7 system I've worked with at some point) I've tracked
the issue down to an underlying fault. Those faults have included crossed
A/B cables between devices and switches, crossed A/B cables at NCNI's and
"problem" RCNI's. At one site, crossed cable issues persisted for months
after our fiber guys swore to me they'd confirmed everything until I gave
up and personally checked each and every core (finding multiple crossed
fibers). RCNI problems were harder - I had one where the only V7 part of
the system was a single AW and RCNI - cables were perfect but kept having
occasional slowdowns which a cable check would fix. Changing the RCNI
fixed the problem. After finding that one I used that system to "confirm"
good RCNIs.
Does this V7 site have any V6.x pieces left or is it all V7?
Have you set up nfd_log and nfd_debug to see what faults the system thinks
it's getting?
Cheers,
Kevin
On Mon, Feb 4, 2013 at 7:29 AM, Barry Heap
<Barry.Heap@xxxxxxxxxxxxxxxxxxxx>wrote:
> Hi List,
>
> We have a V7.x site running with NCNI/RCNI and Enterasys switches as our
> Nodebus.
>
> We have experienced the V7.x slowdown that seems to be caused by Cable
> faults that may be fleeting or longer term. Either way, the first
> indication we get is the Operators informing the site engineers that
> 'the screens are running slow again'.
>
> The fix is to run a Manual Nodebus Cable test and the fault clears
> immediately.
>
> My question is:
>
> Is it possible to schedule a 'manual' Cable test to be run automatically?
>
> I know it may be an odd request, but the V7.x systems just don't recover
> themselves the way the old V6.x systems do .. and the screen slowdown is
> causing some grief on site.
>
> Oh, a V8.x upgrade is not an option at this time, or the near future...
>
> Thanks.
>
>
> Barry Heap
> Control Direction
>
>
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