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Today's Topics:

   1. Re: Trying to fetch arp entries from ArubaOSCX, again (Muris)
--- Begin Message ---
Hi Paul, 

 

Thanks for confirming. 

 

I wonder if there is a better solution to exclude macsuck from cli but keep arp 
only. Maybe Oliver can suggest something better how to deal with this issue? 

If it’s worked out, it can be applied to other SSH collectors to exclude 
macsuck if they attempt to use it.

 

Regards,

Muris

 

From: "Mackie, Paul" <[email protected]>
Date: Thursday, 6 November 2025 at 09:25
To: Muris <[email protected]>
Subject: RE: [Netdisco] Trying to fetch arp entries from ArubaOSCX, again

 

HI Muris, you’re right, I didn’t run the debug when testing, my mistake.

 

I’m tempted to just use a cron job in the interim to flip the config every hour 
so at least I get mac/arp alternately succeeding at various points during the 
day.

 

Thanks for your help.

 

Best regards,
 
Paul Mackie 

 

GEA INTERNAL

From: Muris <[email protected]> 
Sent: 05 November 2025 21:52
To: Oliver Gorwits <[email protected]>; Mackie, Paul <[email protected]>
Cc: Jethro Binks <[email protected]>; Nick Nauwelaerts 
<[email protected]>; Cuttler, Brian R via netdisco-users (HEALTH) 
<[email protected]>
Subject: Re: [Netdisco] Trying to fetch arp entries from ArubaOSCX, again

 

Hi,

 

I tried adding action: 'arpnip::nodes' (also tested action: arpnip) to the 
ArubaCX CLI device_auth, but it actually breaks SSH ARP for ArubaCX - the 
worker skips the CLI path entirely.

 

Debug shows the skip as soon as the action restriction is present:

 

[info] arpnip started…

[debug] … Arpnip::Nodes p200

[debug]  (info) skip: driver or action not applicable

[debug] … SNMP path used instead

 

If I remove the action, SSH ARP works again.

 

Any opinions?

 

Regards,

Muris

 

From: Oliver Gorwits <[email protected]>
Date: Friday, 31 October 2025 at 22:00
To: "Mackie, Paul" <[email protected]>
Cc: Muris <[email protected]>, Jethro Binks <[email protected]>, Nick 
Nauwelaerts <[email protected]>, "Cuttler, Brian R via netdisco-users 
(HEALTH)" <[email protected]>
Subject: Re: [Netdisco] Trying to fetch arp entries from ArubaOSCX, again

 

Awesome! Glad to hear it's working and thanks for using Netdisco :)

 

Oliver.

 

On Fri, 31 Oct 2025 at 10:33, Mackie, Paul <[email protected]> wrote:

Many thanks Olly, yes that seems to have cracked it, both job types are working 
and logs are now clean 😊

 

For reference if anyone finds this useful:

device_auth:

  - tag: ssharubacx

    driver: cli

    platform: ArubaCX

    only:

      - 'os:arubaos-cx'

    action:

      - 'arpnip::nodes'

    username: redacted

    password: ‘redacted’

    ssh_master_opts:

      - "-o"

      - "StrictHostKeyChecking=no"

 

 

Best regards,
 
Paul Mackie

 

 

GEA INTERNAL

From: Oliver Gorwits <[email protected]> 
Sent: 29 October 2025 20:15
To: Mackie, Paul <[email protected]>
Cc: Muris <[email protected]>; Jethro Binks <[email protected]>; Nick 
Nauwelaerts <[email protected]>; Cuttler, Brian R via netdisco-users 
(HEALTH) <[email protected]>
Subject: Re: [Netdisco] Trying to fetch arp entries from ArubaOSCX, again 

 

Hi again

 

I realised there might be a workaround. From the device_auth docs:

 

"The action key allows you to restrict credentials to certain actions or even 
stages of actions on the remote device, such as ARP table gathering 
(arpnip::nodes)."

 

So you should be able to add "action: arpnip" (or "action: 'arpnip::nodes'") to 
the device_auth CLI stanza and restrict it to only arpnip. I guess! Maybe it 
works.

 

There are actually three tickets which address this (all in the guts of 
Netdisco, not specific to Aruba): 1391 1322 1294

 

regards

oliver.

 

On Wed, 29 Oct 2025 at 19:09, Oliver Gorwits <[email protected]> wrote:

That’s correct, at present you can have either but not both. However we have a 
ticket for this feature so it should come along soon. Ish. 

 

Oliver. 

 

On Wed, 29 Oct 2025 at 18:33, Mackie, Paul <[email protected]> wrote:

Hi Jethro / all

I implemented the SSH collector for AOS-CX, and arpnip is now working for these 
devices. Thanks for your work on this.

However, I see that this also causes macsuck to fail for the same devices, 
because it is being attempted by SSH also.

Am I missing something in my configuration, or do I need to choose between 
having arpnip or macsuck working for Aruba AOS-CX devices? It seems I can have 
either but not both at present?

 

Best regards,
 
Paul Mackie 

 

GEA INTERNAL

From: Muris <[email protected]> 
Sent: 24 September 2025 10:08
To: Jethro Binks <[email protected]>; Nick Nauwelaerts 
<[email protected]>; Oliver Gorwits <[email protected]>
Cc: Cuttler, Brian R via netdisco-users (HEALTH) 
<[email protected]>
Subject: Re: [Netdisco] Trying to fetch arp entries from ArubaOSCX, again 

 

Hi JR Binks, thanks for contributing this addon for ArubaOS-CX, there is 1 
problem with it is that it doesnt work in environments with multiple vrfs

Can i make a suggestion to change this line -

$expect->send("show arp\n");

to

$expect->send("show arp all-vrfs\n");

This way it works accross all VRFs present on the switch.

I did test it modifying to this and it does work correctly in mutiple VRF's and 
grabbing the arps.

 

Regards,

Muris

 

From: Jethro Binks <[email protected]>
Date: Monday, 25 August 2025 at 04:15
To: Nick Nauwelaerts <[email protected]>, Oliver Gorwits 
<[email protected]>
Cc: "Cuttler, Brian R (HEALTH) via netdisco-users" 
<[email protected]>
Subject: Re: [Netdisco] Trying to fetch arp entries from ArubaOSCX, again

 

Mmm yes indeed, the "arpnip::nodes" comes from the Configuration documentation 
("The action key allows you to restrict credentials to certain actions or even 
stages of actions on the remote device, such as ARP table gathering 
(arpnip::nodes)", but I've tried with action: arpnip and no action at all and 
the effect is the same.

 

In fact if I introduce a deliberate syntax error into ArubaCX.pm, or 
alternatively set a nonsense platform: ArubaCXXX, it makes no difference 
either, so it's like this is never properly trying.  It does use SNMP to gather 
Arpnip::Subnets (correctly).

 

I have to run an older version (2.076005) because of other issues just now, so 
it's entirely possibly I'm hitting an issue already resolved, although I've 
been through the notes and a code diff and can't spot anything too relevant.

 

Aha!

 

I moved my cli driver section from the bottom of the device_auth credentials to 
the top, and it now hits the syntax error I introduced.

So now I have:

 

[54908] 2025-08-24 15:03:43 debug 130.159.1.52 54908 arpnip()

[54908] 2025-08-24 15:03:47 debug ⬅ (done) Gathered arp caches from 130.159.1.52

[54908] 2025-08-24 15:03:47 debug ⮕ worker Arpnip::Nodes p100

[54908] 2025-08-24 15:03:47 debug ⬅ (info) skip: namespace passed at higher 
priority

[54908] 2025-08-24 15:03:47 debug ⮕ worker Arpnip::Subnets p100

 

Although it didn't actually get any:

 

[54908] 2025-08-24 15:03:48 debug  resolving 0 ARP entries with max 50 
outstanding requests

But that allowed me to finally check and fix the script which literally took 2 
mins to fix the regexp, and now it all works.

 

I have added to the discussion: 
https://github.com/netdisco/netdisco/discussions/869

 

And also made some references between the various other Aruba-related issues 
that touch on naming problems in various respects.

 

Jethro.

 

.  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 

Jethro R Binks, Network Manager, 

Information Services Directorate, University Of Strathclyde, Glasgow, UK

 

The University of Strathclyde is a charitable body, registered in Scotland, 
number SC015263.

 

From: Nick Nauwelaerts <[email protected]>
Sent: 24 August 2025 1:34 PM
To: Jethro Binks <[email protected]>; Oliver Gorwits <[email protected]>
Cc: Cuttler, Brian R (HEALTH) via netdisco-users 
<[email protected]>
Subject: Re: [Netdisco] Trying to fetch arp entries from ArubaOSCX, again

 

all the examples i see just use arpnip instead of arpnip::nodes

 

perhaps change your config action to plain "arpnip" & make sure there's an 
arpnip function in your ssh module

 

From: Jethro Binks <[email protected]>
Sent: Sunday, August 24, 2025 12:39
To: Oliver Gorwits <[email protected]>
Cc: Cuttler, Brian R (HEALTH) via netdisco-users 
<[email protected]>
Subject: Re: [Netdisco] Trying to fetch arp entries from ArubaOSCX, again

 

Thanks Oliver.

 

Any thoughts on why I can't get the SSHCollector script to trigger though 
("(info) skip: driver or action not applicable"),  ND2_LOG_PLUGINS=1 providing 
no further clues.

 

While I potentially have a workaround now using that -p option, that's still 
going to need work and is still < SSHCollector ( < SNMP::Info 
ipNetToPhysicalTable).  It must be something simple but I can't see it.

 

Jethro.

 

.  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 

Jethro R Binks, Network Manager, 

Information Services Directorate, University Of Strathclyde, Glasgow, UK

 

The University of Strathclyde is a charitable body, registered in Scotland, 
number SC015263.

From: Oliver Gorwits <[email protected]>
Sent: 22 August 2025 10:02 PM
To: Jethro Binks <[email protected]>
Cc: Cuttler, Brian R (HEALTH) via netdisco-users 
<[email protected]>
Subject: Re: [Netdisco] Trying to fetch arp entries from ArubaOSCX, again

 

Hi Jethro,

 

Ah you're right the API wiki page has Perl syntax (not JSON) because the 
mojolicious library will convert it. The netdisco-do man page is misleading.

 

It actually means to refer to the API spec itself which is here: 
https://netdisco2-demo.herokuapp.com/swagger-ui/?url=/swagger.json#/Objects/put_api_v1_object_device__ip__arps

 

I'll see if we can make netdisco-do doc clearer.

 

By the way, glad to see -p option being used. In the next major version this is 
changed to be "-e '@/path/to/file'" or you can pipe it in with "-e '@-'". Just 
to make it a bit cleaner across different commands.

 

regards

oliver.

 

On Fri, 22 Aug 2025 at 13:32, Jethro Binks <[email protected]> wrote:

Hey,

 

I've tried it with and without the action:.

 

Adding env ND2_LOG_PLUGINS=1 provided no additional output here:

 

[35351] 2025-08-22 10:42:36 debug ⬅ (done) arpnip is able to run

[35351] 2025-08-22 10:42:36 debug //// EARLY \\\\ phase

[35351] 2025-08-22 10:42:36 debug ⮕ worker Arpnip::Nodes p0 "prepare common 
data"

[35351] 2025-08-22 10:42:36 debug //// MAIN \\\\ phase

[35351] 2025-08-22 10:42:36 debug ⮕ worker Arpnip::Nodes p1000000

[35351] 2025-08-22 10:42:36 debug ⬅ (info) skip: arp table data supplied by 
other source

[35351] 2025-08-22 10:42:36 debug ⮕ worker Arpnip::Nodes p200

[35351] 2025-08-22 10:42:36 debug ⬅ (info) skip: driver or action not applicable

[35351] 2025-08-22 10:42:36 debug ⮕ worker Arpnip::Nodes p100

[35351] 2025-08-22 10:42:36 debug snmp reader cache warm: [ipaddress]

 

But I didn't know about that, so I will remember it in future thanks.

 

Failing progress here, I took a look at doing it out-of-band, and then using:

 

    Submit arpnip results directly to Netdisco by putting the JSON data in a

    file and using the "-p" option (see API web docs for data format

    example):

 

     ~/bin/netdisco-do arpnip -d 192.0.2.1 -p /tmp/arp-table.json

 

Which also seems a more recent addition I'd not noticed before.  But while the 
API docs suggest the format for the JSON should be:

 

[

  { mac => "aa:bb:cc:dd:ee:ff", ip => "A.B.C.D" }

]

 

I had to write it such:

 

[

  { mac: "aa:bb:cc:dd:ee:ff", ip: "A.B.C.D" }

]

 

But it did work!  So that's another interim workaround perhaps.  Still icky.

 

J.

 

.  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  .  . 

Jethro R Binks, Network Manager, 

Information Services Directorate, University Of Strathclyde, Glasgow, UK

 

The University of Strathclyde is a charitable body, registered in Scotland, 
number SC015263.

From: Christian Ramseyer <[email protected]>
Sent: 22 August 2025 12:54 AM
To: Jethro Binks <[email protected]>; Cuttler, Brian R (HEALTH) via 
netdisco-users <[email protected]>
Subject: Re: [Netdisco] Trying to fetch arp entries from ArubaOSCX, again

 

Hi!

On 21.08.2025 21:31, Jethro Binks wrote:
>      action: arpnip::nodes

Your config looks fine at a first glance except for I have never seen
action: used in device_auth... just as a wild guess maybe try without it?

You can also try ND2_LOG_PLUGINS=1 as env var to get some more output
from plugin and worker selection, maybe that helps.

Cheers
Christian

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