How do I enable SNMP on Airport Extreme 802.11ac?

It's not stupid. Read this https://en.wikipedia.org/wiki/Simple_Network_Management_Protocol#Security_implic ations and you might understand why Apple have chosen to remove SNMP support.
I also miss having the possibility to monitor my devices, and in a home scenario, the security implications of SNMP are possibly negligible (security by obscurity). But given that Airports are used by businesses as well, which are greater targets for hacking, it makes sense to remove SNMP.
As some others in this thread have suggested, the best solution (until such a time as Apple introduce some other monitoring possibility) if you absolutely need to monitor traffic is to add 3rd party device to the network: Re: How do I enable SNMP on Airport Extreme 802.11ac?

I don't believe this service can be administered with the (currently latest 6.3) version of the AirPort Utility. At least I also couldn't find it in either the utility itself or within its help information.

In addition, Apple Support's Specifications site does not list SNMP for the 802.11ac models as it did for the prior 802.11n ones. Both of these items would tend to make me believe that this service is no longer supported.

I submitted a ticket this AM to find out if this is a feature that is not coming back. Support did not know of it's dissapearnce, and is commiting to getting an update in 4 business days. Also, the kicker of not being able to deploy the new AE with the windows client utility slipped my notice and I did a firmware update and config restore from my 5th gen to my new AE. The 5th gen is still showing SNMP, but the new AE does not.

Hopefully they aren't 'done' support snmp since most focus is on this router being wireless and being able to troubleshoot that from a perf perspective is very important.

I was not so lucky. I was told that this morning that it was not a supported feature and leaving feedback for the Time Capsule would be my only support option. It's very sad that features are being removed in each Airport Software Version and Firmware on the Actual Time Capsule/Airport Express.

This is truly a bummer. I used iNet to monitor my AirPort data. It appears that feature has been removed. I'm hoping Apple will enable it, as it is EXTREMELY useful!

I just ran into this as well when I installed my new 802.11ac. I am thinking I might send it back and stick with my 5th gen that has support. This is great way for people who have bandwidth caps to monitor so they don't go over and a great way for me to see if anything odd is happening on my network. It is such an epic fail that Apple removed this feature. I use these in my office and this treuly gives me pause if I will continue to do that or switch to something where I have more control. I am sending direct feeback to Apple on this as well.

What do you use to monitor your data cap?

It's not a deal breaker for me, as I only use snmp sometimes, but it's still disappointing to see nice features disappear.

Apple disabled the option to enable SNMP with Airport Utility 6, so if someone has OS 10.7 installed, and can install v5.6, you MAY be able to enable if it sees the new TC/AE device, which I doubt.

This device is new, but it may be possible to still enable SNMP somehow.

Yeah I figured, I just looked and it says v6.3 is required. So I guess that isn't going to work. Oh well...

Apple support confirmed no support ever for new airport extreme.

the disabling is in the router firmware.

Apple needs to bring SNMP back its ridiculous to remove something that the SMB market and every power users want. I guess they are giving up on the SMB market at this point to the likes of Netgear, Linksys (which Cisco sold to Belkin) and some of the other players like Aruba.

It's unfortunate, but SNMP has been disabled for a while. I guess if you enabled it beore Apple removed it, it still worked, so most people didnt notice (me).

I'm still hopeful it can be brought back to life somehow.