Some platforms have broken MIBs relating to VLANs creating off-by-one errors that we have to work around.

That's probably something similar happening here. No one uses these MIBs except us, so these issues sit for ages.

It's also possible we're hypercorrecting an issue that doesn't exist on this particular device, because we erroneously identify it as a device which does present the issue.

Either way, you'll probably be able to figure out what's happening by doing a debugged vlan discovery run and paying attention to the data returned from the device.

Thanks,
adam.

Damien Gardner via observium wrote on 2024-05-06 23:45:

I don't know about 4097, but 4096 is what you used to tag on a vswitch port to pass a full copy of your uplink port to a VM (i.e. to pass all tagged vlans). It would be the same as configuring a dvportgroup of type 'vlan trunk' and setting '0-4096' in the 'vlans' field.

Cheers,

DG

On Mon, 6 May 2024 at 22:13, Brian :: via observium <observium@lists.observium.org> wrote:
They're special broadcom tags for letting you know your network belongs to them.

On Mon 6 May 2024, 1:08 PM grendel--- via observium, <observium@lists.observium.org> wrote:
Observium 23.9.13005 Community Edition

shows under PORTS --> VLANs
two VLAN which are out of IEEE 802.1Q Range (0-4095)

VLAN ID VLAN Name
4096 vlan4096 31
4097 VLAN 4097

after klicking on the VLAN Names
it shows for both VLAN-Names all LAN Connects of our VMWare ESXi Hosts

we got 2 older ESXi Hosts (v6 level)
and 4 new ESXi Hosts (v8 level)

an of course NO ESXi has a VLAN ID 4096/4097

Is this some kind of misinterpretation?
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