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Groups > comp.arch.embedded > #25191
| From | Grant Edwards <invalid@invalid.invalid> |
|---|---|
| Newsgroups | sci.electronics.design, comp.arch.embedded |
| Subject | Re: "On-line" 100BaseTX hardware diagnostics |
| Date | 2016-10-12 20:33 +0000 |
| Organization | PANIX Public Access Internet and UNIX, NYC |
| Message-ID | <ntm6ls$6ir$1@reader2.panix.com> (permalink) |
| References | <ntm35f$4pp$1@dont-email.me> |
Cross-posted to 2 groups.
On 2016-10-12, Don Y <blockedofcourse@foo.invalid> wrote:
> What sorts of hooks can I include in my designs to allow
> run-time testing of 100BaseTX hardware?
>
> Obviously, I can monitor traffic, throughput, CRC errors,
> etc. to give me a feel for degradation of the overall link.
>
> But, what can I do to diagnose things like cabling problems
> and failures without impacting the quality of the link
> hardware "otherwise"? (think "built in cable tester")
You use a PHY that has built in cable tester features.
> An even tougher question: can I leverage a *partially*
> functional cable/interface to provide *limited* connectivity
> in the event of a failure that impacts the normal NIC-pair?
> (even if this is an either-or implementation)
Are we to assume you're using a cable with unused pairs in it?
And you want to fail-over to normally unused pairs if the standard
wire-pairs aren't working?
You'll need to add magnetics for the other two pairs, and implement
something to switch the PHY between the two sets of magnetics.
Or add another PHY+magnetics, and switch the MII interface back and
forth between the two PHYs.
On both ends of the cable.
Or something link that.
--
Grant Edwards grant.b.edwards Yow! I am having FUN...
at I wonder if it's NET FUN or
gmail.com GROSS FUN?
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"On-line" 100BaseTX hardware diagnostics Don Y <blockedofcourse@foo.invalid> - 2016-10-12 12:33 -0700
Re: "On-line" 100BaseTX hardware diagnostics Grant Edwards <invalid@invalid.invalid> - 2016-10-12 20:33 +0000
Re: "On-line" 100BaseTX hardware diagnostics Don Y <blockedofcourse@foo.invalid> - 2016-10-12 15:48 -0700
Re: "On-line" 100BaseTX hardware diagnostics Robert Wessel <robertwessel2@yahoo.com> - 2016-10-12 17:47 -0500
Re: "On-line" 100BaseTX hardware diagnostics Don Y <blockedofcourse@foo.invalid> - 2016-10-12 16:07 -0700
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