Switch SNMPv3 settings changed to AES128 without warning

[MikeHunt]

One of my sites's SNMPv3 reporting went offline earlier tonight.

The Sites' > Network-Wide > Configure > General > SNMP section had a new Privacy Mode = AES128 dropdown.

Of course our monitoring software is still configured for the previous DES setting

This is easy enough to 'update' our Network Monitor to AES too, which is definitely the preferred option - but seriously WTF was this changed to begin with? This wasn't a change we triggered nor did I receive any advice about this. This caused mass panic & confusion as to why we're suddenly started loosing SNMP polling progressively across all Meraki switches on the site.


To possibly make matters worse - Some of my other sites also have this new AES128 dropdown - yet are still polling fine on the existing DES settings.  WTF is going on with the change control process here?

[alemabrahao]

It's a complicated situation and I'm sorry for you, but it would be a good idea for you to contact Meraki support.

[matts3]

Yes! I just noticed this too, all of our devices just dropped off from SNMP monitoring and I couldn't work out why. Thank you for sharing this.

It's worth noting that if you have mixed networks, i.e. both switching and wireless, that drop down doesn't even show up!

Annoyingly, this change hasn't hit all of our networks yet, just the one or two :S

Thanks Meraki for making silent changes....

[elves]

having the same issue now random devices area having communication issues on prtg and others dont