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Double NAT

Will be having an Eastlink Tv Maestro box installed for cable television. It has features that apparently require its DHCP to be active to work with its remote tv boxes through the house  

Current system:  currently running eero. Existing Arris modem in bridge mode to be replaced by Arris DCX3635 that cannot be put in bridge mode for the Maestro system to work  in other words, the Arris cannot just be a dumb dhcp gateway.  Its TVs in the other rooms depends on it  

Double NAT: Am using eero Plus, which I want to continue using. I know eero can double NAT but will I have to reset my entire eero system once attached to new modem to allow it to double NAT?  I’ve got 60+ named devices and it took me forever to type all that into the eero app.)  

i intend on maintaining my existing network name with the eero and giving another name to the Arris network. 

Will eero Plus have an issue with the double NAT?  Can I just plug in eero I to the new modem/router or must I completely reset the system ? Hope  this is clearer than mud. 

Best

Daniel, Ontario Canada. 

20 replies

    • cMoo92
    • 6 yrs ago
    • Reported - view

    I don’t have a for sure answer (contacting support might be better), but I’d be very surprised if you’d have to reset your network. You can also just wait and see what happens after the equipment gets installed! That’s the cMoo92 Scientific Method.

    • eero Community Manager
    • Jeff_C
    • 6 yrs ago
    • Reported - view

    Nope! Just connect it via Ethernet (maybe give both your new modem and gateway eero a good ‘ol power cycle to be safe) and you should be back online in no time.

    • Fan of tinkering with new hardware. Canadian dude.
    • cotedan87
    • 6 yrs ago
    • Reported - view

    Many thanks to the CMoo92 scientific method (you’ll get a Nobel prize for it I’m sure). Also thanks to a complementary scientific method from our famous Jeff C.  

    Ill do the power cycle for sure. Only learned after I ordered that the system needs to give DHCP to get its other connections work together. I hope I can kill wireless on the Arris for the tv system.  Eero has been smooth as silk so I want to keep it intact as is. 

    (Jeff, you get a Nobel Peace prize for keeping us all sane in here with your clear insights :)

    • eero Community Manager
    • Jeff_C
    • 6 yrs ago
    • Reported - view
    • Fan of tinkering with new hardware. Canadian dude.
    • cotedan87
    • 6 yrs ago
    • Reported - view

    And kudos to eero engineers for having the foresight to use the .7.1 IP structure to prevent those hard working chips from going psycho. 

    • MrDoh
    • 6 yrs ago
    • Reported - view

    If the  Eastlink Tv Maestro box needs to be a router (doing DHCP, DNS, etc.), you can put your eero into Bridge mode. You don't have to have it do double NAT in "automatic" (router) mode. Then the eero will be your wireless AP. Incidentally, that's how I use my eero, in Bridge mode to handle my wireless needs *smile*. Works really well, have a Netgear R7800 that I use for my "main" router (wired-only), and the eero makes a splendid complement to that for wireless.

      • Fan of tinkering with new hardware. Canadian dude.
      • cotedan87
      • 6 yrs ago
      • Reported - view

      MrDoh ok thanks. Was trying to maintain as many eero features as I could (including eero Plus) but I guess I'll have to put it into bridge mode. I get 5 bars from each of the 60ish devices I have so I don't want to mess with my eero wifi!

      From what I understand, the Arris DCX3635 router needs to control IP assignments to reach the TV boxes in the other rooms. I'm fortunate that all rooms are prewired with coax and ethernet, so hopefully I can turn off the Arris' wifi completely. Otherwise I'll have to 1) bridge the eero, 2) double NAT, or 3) assign a static IP to the eero if the Arris has problems. 

      Will have to give up eero Plus if eero goes into bridge mode. Oh well.... I have an (unused) Cujo unit as firewall but I prefer eero Plus for some reason. 

    • MrDoh
    • 6 yrs ago
    • Reported - view

    Interesting. I haven't heard much about eero Plus, doesn't attract me personally. Pretty much satisfied with our internet protection here without extra security. I would think that Cujo would most likely provide whatever protection from the internet that you feel you need *smile*.

    Anyways, enjoy, the eero makes an excellent wireless AP!

    • Fan of tinkering with new hardware. Canadian dude.
    • cotedan87
    • 6 yrs ago
    • Reported - view

    As the journey continues .... 

    Not much choice but to have the new Arris DCX3635 box do all the dhcp stuff and to put eero in bridge mode.  Have taken off eero Plus, and changed dns to Cloudfare 1.1.1.1 to try them out. 

    The eero Plus VPN is worth the price alone of keeping it. Looking for a replacement for the other parts of eero Plus tho. CUJO and Bitdefender Box 2 are possibilities although 2nd one not yet avail in Canada. Hm.... decisions ....

    • Fan of tinkering with new hardware. Canadian dude.
    • cotedan87
    • 6 yrs ago
    • Reported - view

    Many days later, things still working fine. 

    1. Arris modem wifi off but still does dhcp with 192* IP set  

    2. Bitdenfeder Box 2 connected to Arris. Uses 172* IP set

    3. eero connected to Bitdefender Box. Bridge mode. 

    Everything working great. eero’s Speedtest shows only 20-30% of results using Speedtest.net , but this isn’t a deal breaker.

      • Halicoaster
      • 6 yrs ago
      • Reported - view

      cotedan87 

      The Maestro DVR, although it has a modem built in, uses the external modem DHCP to operate and distribute IP signal throughout the network, to the other set tops, etc. Depending on what you are doing, having eero in DHCP mode rather than bridge mode could allow all your wired and wireless devices to be on the same network talking to each other if necessary, and your apps that control the hardware via wi-fi would work seamlessly. So, by that I mean modem bridged / ethernet / eero NAT / ethernet / Maestro gateway / ethernet or wireless / set tops. Service provider probably will not support that bridge modem setup with Maestro too though.

      • Fan of tinkering with new hardware. Canadian dude.
      • cotedan87
      • 6 yrs ago
      • Reported - view

      Halicoaster thanks for the clarification. Here’s how it worked out. 

      1. Maestro was connected by coax etc. Was able to run eero in regular mode. Disabled maestro wifi. 

      2.  Messed things up by tinkering so had to factory reset th Maestro. This killed the Maestro MOCA setup. 

      3.  Maestro now simply connected via Ethernet although cable is too, without MOCA. For some reason, disconnecting the eero didn’t disable the tv. 

      Thing running smoothly now and I can see the Arris tv units as an IP on eero and I suppose they’re protected by eero plus. 

      • Halicoaster
      • 6 yrs ago
      • Reported - view

      cotedan87 

      Glad it worked out like that 👍

      • Fan of tinkering with new hardware. Canadian dude.
      • cotedan87
      • 6 yrs ago
      • Reported - view

      Halicoaster well a couple months later .... Arris Maestro Box totally reset by the techs to get MOCA to work as its supposed to. Simply disabled the wireless in the Arris.

      eero doing all the work, not in bridge mode, with eero Plus doing all the screening. Love the ad blocking for the whole house. Was without it for a few hours the others day, and boy oh boy, I never noticed how bad the web is filled with ads. Try any newspaper website - there’s always some big annoying ad right at the top.

      Any case, guess every user is different. For now, things very stable. Nest cams occasionally disconnect for a few mins, but that’s not necessarily on eero’s shoulders. 

      • MrDoh
      • 6 yrs ago
      • Reported - view

      cotedan87 Interesting...I have the other eero setup, bridged, which is working very well for me. Have a Netgear R7800 set up as my main "wired-only" router, with the eero connected to it in AP/bridge mode. The R7800 is using LEDE firmware, so has "free" ad blocking (without paying for eero Plus), as well as per-IP traffic metering. I'm also using MoCA 2.0 to connect the eero nodes, and that acts as wired backhaul, works well. The MoCA wired backhaul has really helped the speed of the wireless on the eero...if I didn't have that, I'd have to move the farthest eero node closer to the gateway eero node, and still wouldn't see the wireless speed I'm getting now. And it's nice that the built-in ad blocking from the LEDE firmware removes the somewhat aggressive ads from our Roku's without having to pay an extra per-month fee..

      I'd prefer to be using the eero in router/automatic mode, but this configuration does everything I need to do as it is, including solid wireless. So it stays until I get tired of having ad blocking and traffic metering *smile*.

      • CEO & Co-founder
      • weaves
      • 6 yrs ago
      • Reported - view

      MrDoh What do you use IP metering for? Tracking WAN bandwidth consumption, LAN bandwidth consumption, setting bandwidth limits or some combination?

      • MrDoh
      • 6 yrs ago
      • Reported - view

      weaves We have switched from Comcast cable TV to streaming internet TV and are dealing with the 1TB data cap. If we go over the cap, it's like $10 for each extra 50GB above that. Or you can pay for unlimited data for an extra $50/month. I can't afford either of those, so I have to be sure that my total data usage is below the 1TB for the month. If I use more data than I should for a day, keeping an eye on how much data each client is using gives me an idea of where I need to cut back. Without the per-IP traffic metering, I'd be totally guessing where my usage is. The traffic metering has saved me a lot of time in trial-and-error.

      So I can thank Comcast (as usual) for complicating my life *smile*. I tried to switch to AT&T 1Gb. fiber a while ago (no data cap), didn't work. AT&T missed 3 out of 4 installation appointments over almost 2 months, and I just gave up on them. Figured if that's how much they value me as a customer, then I'd just stay with Comcast. It was ridiculous, they'd schedule an appointment for the install, miss it, then I had to wait two weeks for the next appointment that they'd miss. I know exactly where I stand with Comcast, I'm a cash cow to be milked for as much money as they can get out of me *smile*, but they do try to retain me as a customer. So I play Comcast's game with the data cap for the time being.

      • Fan of tinkering with new hardware. Canadian dude.
      • cotedan87
      • 6 yrs ago
      • Reported - view

      MrDoh Used to have eero in bridge mode for a while connected to BitDefender Box2 + the Arris modem with MOCA for tv, but I couldn't use the eero Plus features, and the lack of home network level features like ad blocking was bothering me.

      Not a fan of having to install and update software on each individual computer, phone, tablet etc.  Love to have more network-level stuff within eero - e.g., MalwareBytes baked into eero  :). (hint hint, Nick. Please   👍😎😁)

      • CEO & Co-founder
      • weaves
      • 6 yrs ago
      • Reported - view

      MrDoh ok, got it. So it's WAN consumption tracking. Thanks

      • MrDoh
      • 6 yrs ago
      • Reported - view

      weaves Glad to see that you're interested, thanks for asking *smile*.

Content aside

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