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Today's Topics:
1. Re: ARP matching for netdisco (Muris)
--- Begin Message ---
Hey Jethro, thanks for contributing.
Yes ive noticed the issue around the Aruba CX switches also, but also ArubaOS
wireless controllers. Aruba recently acquired Silverpeak also and I spent a
considerable time working out how to integrate that into netdisco which ive now
submitted the code I did for it to integrate it so the devices appear as
“silverpeak” rather than “unknown enterprises”, luckily the silverpeaks work
fine for the arp component.
The SSH collector doesn’t work for ArubaOS either. I also think some arping
around the Cisco ISR’s running XE code need fixing, as those can’t seem to map
mac to IP on a to a port to display on webpage in ISR 1111/1113/1127/1131
routers, and especially running VRF’s etc.
Like look at this ticket I raised in 2021 -
https://github.com/netdisco/snmp-info/issues/442
I don’t mind having a look and digging through the code myself and seeing how
things function, but this whole arp and arp to mac mapping is whole new
component that I think isn’t really written somewhere for someone to pickup and
understand the whole ins and outs of it.
I wish there was some kind of guide for testing this and what its outputting
and what’s it not outputting, and how that procedure is interpreted and what
needs to be modified, but I just haven’t seen anything like that available.
If something is missing in the Aruba platform that it’s not working let me know
what exactly , I got direct access to their teams to raise cases and find out
why, same goes for Cisco.
Muris
From: Jethro Binks <jethro.bi...@strath.ac.uk>
Date: Thursday 25 July 2024 at 21:05
To: "netdisco-users@lists.sourceforge.net"
<netdisco-users@lists.sourceforge.net>
Subject: Re: [Netdisco] ARP matching for netdisco
Hi,
I'm also interested in this, and while I'm not sure I can answer your question
it gives me a chance to mention these lingering tickets.
Unclear whether you meant Aruba OSCX, but it's certainly a problem there. I
can't remember for (AOS) ArubaOS (wireless controllers). This issue refers for
OSCX: https://github.com/netdisco/snmp-info/issues/452 And it seems due to
the use of "newer" MIBs rather than the classic ones this would require some
fundamental changes in SNMP-Info.
Using an SSH collector is suggested as a workaround:
https://github.com/netdisco/netdisco/discussions/869
(I might take Olly's suggestion and convert that to an issue)
But that doesn't work for me as it stands:
https://github.com/netdisco/netdisco/issues/1230
That's for ArubaOSCX - it would need modifying or another one doing for ArubaOS.
I've no reason to believe there is any problem with ArubaOS-Switch (i.e.
classic Procurve).
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: Muris <alcat...@gmail.com>
Sent: 25 July 2024 05:27
To: netdisco-users@lists.sourceforge.net <netdisco-users@lists.sourceforge.net>
Subject: [Netdisco] ARP matching for netdisco
Hey all,
Ive picked up another issue ive come across in relation to arpnip’s and
netdisco picking up for matching to mac addresses
Ive found on ArubaOS controllers this does not work, and gets 0 arps and ive
seen it on a couple of Aruba switches or two. This is running the netdisco-do
arpnip function when I look at the output.
Ive also noticed on Cisco SDWAN platform using Cisco ISR 1127/1131 which has
VRF’s on a router it also doesn’t appear to match arps to macs probably because
it has VRFs?
I tried to use the SSH script in this instance but still didn’t work. The
routers I have are running IOS XE, which doesn’t seem to work with the SSH
collector, as that only has IOS and IOSXR
1) I wanted to ask, is there a troubleshooting method for arps retrieval, and
what part of code handles the arp matching?
2) What if I have a IOS XE router with vrf’s is it able to retrieve IP to mac
mappings? If I can do a “show arp vrf 2000” this shows the list, but how do I
make that available into netdisco?
3) What part of the code in the netdisco looks at arp retrieval and then
storing it into the db into particular method? Is there something that can be
tweaked how it interprets the data, say for a Aruba Controller, or a Cisco
router with vrfs etc
Sorry if its been asked before .. but im finding lately due to the environment
getting complex I wouldn’t mind how the whole arp storing works and getting
more things to work better .
Muris
--- End Message ---
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