Wired Intelligent Edge (Campus Switching and Routing)

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Occasional Contributor I

2530-48g-poe+ TDR test not running

We've mostly deployed 2930f switches, but just dropped a 2530 at a client site. Running firmware YA.16.08.0003 I get the following each time. The feature matrix says transciever diagnostics are supported, but I couldn't find something more particular. Is this a hardware limitation or a firmware bug? I'll try different versions, but I thought I'd ask.

 

 

HP-2530-48G-PoEP# test cable-diagnostics 1
The port or transceiver on port 1 does not support cable diagnostics.
Please try only with port or transceivers which are supported.

MVP Expert

Re: 2530-48g-poe+ TDR test not running

Hi,

you wrote "The feature matrix says transciever diagnostics are supported" but there is no evidence of that.

AFAIK only Aruba 2540, 2930F, 2930M, 3810M and 5400R zl2 (on v3 zl2 modules only) do support TDR.
Occasional Contributor I

Re: 2530-48g-poe+ TDR test not running

Aargh! I misphrased the previous bit, but my point was I can't find an item that lines up with TDR on the matrix that the 2530 doesn't have.

 

I've swapped two firmwares out since posting, and I suspect you're right. Really frustrating, as far cheaper other switches do it, and the hardware is obviously capable of at least some testing. (Energy Efficient Ethernet, which the 2530 DOES have, requires cable length determination, though the minimum resolution to meet spec is abysmal)

MVP Expert

Re: 2530-48g-poe+ TDR test not running


@mcoelho wrote:

Aargh! I misphrased the previous bit, but my point was I can't find an item that lines up with TDR on the matrix that the 2530 doesn't have.


Have a look here and search for "Time Domain Reflectometry" feature on the matrix.


@mcoelho wrote:

I've swapped two firmwares out since posting, and I suspect you're right. Really frustrating, as far cheaper other switches do it, and the hardware is obviously capable of at least some testing. (Energy Efficient Ethernet, which the 2530 DOES have, requires cable length determination, though the minimum resolution to meet spec is abysmal)


The point is that VCT (Virtual Cable Testing), which use TDR, needs a system that is engineered in Hardware and Software to provide pulse signals on its interfaces (pulse signals are used to diagnose - through their reflections back to the source - connected copper cable)...so, probably, Aruba 2530 hasn't such feature deployed in Hardware although the user command is available at Software level.

MVP Expert

Re: 2530-48g-poe+ TDR test not running

Greetings!

 

As pointed out by parnassus, TDR is not supported on the 2530 series. The 'test cable-diagnostics' command remains present, however, for transceivers that support Diagnostic Optical Monitoring (DOM) or Virtual Cable Test (VCT) features, which show up as 'Diagnostic Support' in the transceiver information displayed using the command 'show interfaces transceiver detail'. Testing of transceivers supporting these features is supported on the 2530 series.



Matt Fern
Technical Marketing Engineer, Wired Intelligent Edge

Aruba, a Hewlett Packard Enterprise company

8000 FOOTHILLS BLVD  |  ROSEVILLE, CA 95747
T: 916.540.1759  |  E: mfern@hpe.com   |   Matt @ Twitter
Occasional Contributor I

Re: 2530-48g-poe+ TDR test not running

Aargh! Again. Thank you though, that most definitely is a solid answer, even if not what I hoped to find.

 

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