Redundancy and Reliability with Ubiquiti's UniFi Shadow Mode! UDM Pro MAX!

We are going to take a look at the redundancy capability of the Ubiquiti UDM Shadow mode, a fantastic new feature that gives you the ability to have a complete failover UDM controller/firewall/app platform! And of course there will be at least one story.

[smokecrackmrkrabs]

I aspire to be as self actualized as you are Jeff, I thank you for your inspiration and your insane home networking setup that I get to nerd out about.

[rayk]

Best explanation I've seen because you talk about all the possible scenarios particularly having 2 ISP connections. You also explain what interfaces are up/down and why.

[TheYoutubes-fs]

Just going down the Ubiquity rabbit hole, great videos on these recently.

[shm]

I have a remote Ubiquiti Aircam up and running over 10 years no issues. However, the internet provider router sometimes used to crash. A simple “mains timer plug” which cuts power between 3am and 4am has worked a charm. Router gets a hard reboot every day! If it ever stops responding, just need to wait until the morning. 👍

[arnivska]

That Arista is going to have 6x ASICS’s, probably the Fulcrum ones. At the time the max 10G ports you could have on a commercially available ASIC was 24, so you could have a single ASIC 24 port switch but if you wanted 48 ports of none-blocking 10G in one switch you needed 6 ASICS to achieve that in a CLOS architecture, with 4 ASICS’s providing 12 ports forward facing each and then the two ASICS’s for the backend to connect the other four. So that contributed to some of the high power use :) if you open up the switch you will see the six ASIC’s in the 4 - 2 arrangement

[silasb]

Jeff, love your videos and your setup. Just getting started with your channel, but wondering what you do for IPAM? Flat L2 network? Routes L3? Any routing protocols in use?

[dcoxdon]

Great Video! I have a UDM Pro and a UDM SE. I know one is a bit slower/etc. than the other but can I use shadow mode between my PRO and SE? One question I did have with your setup. It seems you just moved the single point of failure from the UDM to the small switch between your modem and UDMs... But I can't think of any way to get past that if your incoming modem doesn't have 2 working ports.

[bothorsen]

We have been on a quest to get rid of single points of failure all over our network, and this will be the next step.

One thing I'm currently looking at: I have fiber coming in to the office and this is going directly into the UDM Pro. Do you know if it's possible to do a splitter so the fiber can go in to the other one as well? It would be fantastic, if there was a way to do this without an active "fiber switch" box.

After this, the 10G aggregation switch is the last failure point. And I am considering exactly what you proposed - to do a backup ethernet based switch to each of the servers. But as you say, network equipment is pretty reliable, and it's very easy to replace a switch. It's not easy replacing a UDM, because of the UniFi controller.

[isaacjohnston]

At around 21:40 you mentioned that you could create a VLAN on the Ubiquiti switch to "split" your ISP connection. You said that if you lose your internet, you lose the ability to connect to the UDM and any other part of your network. If you are using a backup ISP to the UDMs, wouldn't that still allow you to connect to them (the backup ISP modem has two ports available so it would not be relying on the Ubiquiti switch for splitting the backup connection)?

[gerelltroche]

I love all your videos but on my phone the volume is a bit low. I always put on the cc. Those work great but im not sure if more would benefit from a bit louder voice. ❤❤

[Ferdaze]

I was just trying to build a segregated VLAN so I can connect my Comcast internet to it in my data closet and then I can drop that VLAN off another Unifi switch on my test bench so I can use my public /29 on the UDM-SE and on my bench. Just not sure how I would setup that VLAN in the UDM. Any suggestions?

[stevejjd]

Is it possible to make several computers connected together that behave like it’s actually 1 computer?

[bentheguru]

Hey Jeff, I have been very critical of many YTer's who have all been getting free UniFi nopw the UBNT have gone to the bribe-style product flogging like 45-Drives did. All You-Floggers claimed to be unbiased in their revies but sadly, many of the reviews / reviewers were in many cases, out of their depth and in a shiny-blinky trance. Outcome has been biased and niave to the history of bad firmwares and UBNT's claims of enterprise grade since day one and is only just getting there now.
I must say, your review was clearly deep and detailed and as you are strong with your UniFi Kung-Fu, I happily watched despite you getting demo gear which we both know, unlikely to be swayed.

[BDBD]

I'd be curious how quickly internet failure for the Unifi LTE modem is. I have one but haven't had a use case to deploy it yet.