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Today's Topics:
1. ARP matching for netdisco (Muris)
2. Re: ARP matching for netdisco (Jethro Binks)
--- Begin Message ---
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 ---
--- Begin Message ---
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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