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Today's Topics:
1. No nodes on some switches (Lavin, Michael (ITS))
2. Meraki MAC to IP (Jimmy Taylor)
--- Begin Message ---
Software Version
App::Netdisco 2.60.4
SNMP::Info 3.89
DB Schema 77
PostgreSQL 11.00.19
Perl 5.16.3
Some of my Cisco IOS devices are not reporting any connected nodes.
As an example, my own PC MAC address is showing up in the NetBIOS information
in Netdisco. The ARP IP mapping is working.
I know it is on port Gi1/0/43 of a switch. I see it when I do a "show mac
address-table" on the switch it is plugged into but when I MAC suck that switch
the debug shows:
[17164] 2023-06-26 13:41:08 debug [10.56.119.8:161] try_connect with ver: 3,
class: SNMP::Info::Layer3::C6500, comm: <hidden
...
[17621] 2023-06-26 13:56:21 debug [10.56.119.8] macsuck - stored 0 forwarding
table entries
[17621] 2023-06-26 13:56:21 debug [10.56.119.8] macsuck - removed 0 fwd table
entries to archive
I read this as no mac addresses are stored and the reports show no devices but
the phone on that switch. The phone information is collected via CDP/LLDP.
The switch is: Vendor / Model cisco / 36xxstack OS / Version ios-xe /
16.3.7
A similar situation occurs on many switches on my network. Others have
workstations and printers mapped to ports as expected. I see no pattern to the
models, vendors or OS of the devices where the Node information is different.
We use VRFs all over our network and I thought the issue was ARPNIP related,
but this MAC does have the IP mapped.
Any insight would be appreciated.
Thank you.
--- End Message ---
--- Begin Message ---
Is there any guidance on getting MAC addresses and maybe even IP addresses from
Meraki? I saw in an old thread some modifications to the SNMP module:
https://sourceforge.net/p/netdisco/mailman/message/37257000/
But frankly I don't know how to build an SNMP pm file, so I'm a little lost on
that. Modifying the Info.pm file with regex is easy enough, but not sure about
the other file.
Thanks.
---
Jimmy Taylor (he, him, dude)
Network Systems Engineer
--- End Message ---
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