<html><head></head><body>Regarding EAP Proxy on the UDM Pro, this looks promising — <a href="https://github.com/pbrah/eap_proxy-udmpro">https://github.com/pbrah/eap_proxy-udmpro</a><div><br></div><div>Thanks everyone for the information. I definitely have some things to consider and research. <br> <p class="gmail_quote" style="color:#000;">On February 13, 2022 at 11:21:21, Derek Atkins (<a href="mailto:derek@ihtfp.com">derek@ihtfp.com</a>) wrote:</p> <blockquote type="cite" class="gmail_quote"><span><div><div></div><div>Hi,
<br>
<br>Yes, the ONT is the Optical Network Terminal. It's a small box that
<br>converts the fiber to ethernet, which then plugs into your network. AT&T
<br>requires their box to authenticate over the ON to bring your network
<br>online. And yes, an ER-4 is the Edgerouter 4. I had an ER-X in place,
<br>but it can't switch fast enough to keep up with a fully-loaded 1Gbps
<br>symmetric service (but the ER-4 can).
<br>
<br>The biggest issue I have had with the AT&T devices (and note that I also
<br>have a /29 of static IPv4 with them) is that even when using my static
<br>IPs, If I go through their gateway then I am subject to their NAT Table
<br>size limitations (and the added latency of their box). This was the
<br>primary reason I went with an architecture to remove their box from my
<br>data path: to remove their NAT table limits. The fact that it also
<br>removed about 10ms of latency is just an added bonus.
<br>
<br>I've never used a UDM Pro. It's certainly possible that you could set up
<br>the EAP Proxy service there. The fact that it uses SFP shouldn't make a
<br>difference, but you will need 1000BaseT ethernet for the ONT input.
<br>
<br>Beyond that, I cannot really talk about the stability or reliability of
<br>their IPv6. Like I said in my first post, I found that IPv6 performance
<br>wasn't as good as IPv4, but that was "by eye". I can't really find a good
<br>way to measure that because speedtest is a false test (it only tests from
<br>your device to the other end of the fiber, effectively), and fast.com
<br>(which is a more realistic measurement) doesn't do IPv6. And I turned it
<br>off because facetime stopped working (but again, I suspect that's due to
<br>firewall issues). (FYI, I still do the DHCPv6-PD; I just turned off the
<br>announcement of the delegation onto my LAN network).
<br>
<br>I elided the fact that I have two Edgerouter products on my network; I've
<br>got an ER-Pro8 behind the ER-4, so that is likely part of my facetime
<br>firewall issue. I just didn't spend a lot of time on it.
<br>
<br>-derek
<br>
<br>On Sun, February 13, 2022 10:47 am, James Sumners (ALE) wrote:
<br><blockquote type="cite">Let’s assume I’ve only ever picked up fiber cable and never actually
<br>installed or managed a network with it. From your diagram, I am picking up
<br>that the ONT is the device where the fiber terminates in my house, and the
<br>ER-4 is an Ubiquiti Edge Router.
<br>
<br>I am likely to be getting an Ubiquiti UDM Pro to replace my pfSense box
<br>(given that I no longer need to care about tracking total bytes across the
<br>WAN interface). This gateway device has SFP+ ports. Would those factor
<br>into your diagram in any way?
<br>
<br>How does using the AT&T gateway device as an authenticator only device
<br>change the IPv6 reliability?
<br>
<br>On February 13, 2022 at 09:43:29, Derek Atkins
<br>(derek@ihtfp.com(mailto:derek@ihtfp.com)) wrote:
<br>
<br><blockquote type="cite">Just a small correction -- while AT&T does require their box to be
<br>online
<br>for 802.1x authentication, you can absolutely design a network where the
<br>AT&T box is not in the data path! Indeed, I've done that here. Basically
<br>my network looks like:
<br>
<br>--fiber-- [ONT] ---- [ ER-4 ] --- LAN
<br>|
<br>[AT&T Box]
<br>
<br>Using EAP Proxy and some firewall rules allows this to work and -- viola
<br>-- AT&T box is no longer involved in your day-to-day data usage.
<br>
<br>-derek
<br>
<br>On Sun, February 13, 2022 9:23 am, James Sumners \(ALE\) via Ale wrote:
<br><blockquote type="cite">Sounding a lot like I’ll be hoping Comcast actually tries to compete
<br></blockquote>now
<br><blockquote type="cite">that AT&T has brought actual broadband to my area. 😔
<br>
<br>
<br>On February 12, 2022 at 19:17:58, Bryan L. Gay (ale@bryangay.com)
<br></blockquote>wrote:
<br><blockquote type="cite">
<br>I had both Comcast and AT&T Fiber for years in Kennesaw. I was never
<br></blockquote>able
<br><blockquote type="cite">to get IPv6 delegation working reliably on AT&T, even after they
<br></blockquote>stopped
<br><blockquote type="cite">doing 6rd. I have Comcast now at the new place, 1.2Gbps downlink, and
<br></blockquote>have
<br><blockquote type="cite">never had an issue with Comcast's IPv6. AT&T just never seemed to get
<br>their act together. While having 1Gbps symmetric over IPv4 was great,
<br></blockquote>and
<br><blockquote type="cite">it was less expensive, I'm happily on Comcast, now. AT&T requires you
<br></blockquote>use
<br><blockquote type="cite">their gateway, which introduces other recurring problems. On Comcast,
<br></blockquote>I
<br><blockquote type="cite">own my own DOCSIS dumb modem.
<br>
<br>On Fri, Feb 11, 2022, 17:06 James Sumners (ALE) via Ale <ale@ale.org>
<br>wrote:
<br>
<br>
<br>Earlier today AT&T attached some fiber to the pole directly across the
<br>street from my driveway. I’m sure it will take them another month or
<br></blockquote>two
<br><blockquote type="cite">to activate the line, but I want to go ahead and solicit some
<br></blockquote>knowledge
<br><blockquote type="cite">from you folks.
<br>
<br>Currently, I’m on Comcast (plain residential). I despise the business,
<br></blockquote>but
<br><blockquote type="cite">their network people are top notch and have rolled out a nice stable
<br></blockquote>IPv6
<br><blockquote type="cite">network. They assign my WAN interface a `/128` and allow network
<br>assignments via a `/64` or `/60` prefix delegation over DHCPv6. The
<br></blockquote>`/60`
<br><blockquote type="cite">allows me to create multiple VLANs in my house for things like IoT
<br></blockquote>devices
<br><blockquote type="cite">separate from my primary devices.
<br>
<br>Does anyone have experience with AT&T’s IPv6 implementation? Would
<br>switching to them be mostly transparent in this regard? Are there any
<br>“gotchas” that I should be aware of?
<br>_______________________________________________
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<br>https://mail.ale.org/mailman/listinfo/ale
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<br>_______________________________________________
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<br>See JOBS, ANNOUNCE and SCHOOLS lists at
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<br>
<br></blockquote>
<br>
<br>--
<br>Derek Atkins 617-623-3745
<br>derek@ihtfp.com www.ihtfp.com
<br>Computer and Internet Security Consultant
<br>
<br></blockquote>
<br>
<br></blockquote>
<br>
<br>--
<br> Derek Atkins 617-623-3745
<br> derek@ihtfp.com www.ihtfp.com
<br> Computer and Internet Security Consultant
<br>
<br></div></div></span></blockquote> <br><div class="gmail_signature"></div>
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