09-29-2017 8:42 AM
I have tried three different routers and all of them run at 60 mbps down and around 220 up. What is wrong with my Pace 5268AC.
WNDR3700 - returned
ASUS RT68U - still have and running dd-wrt
Third and final which I'm keeping:
pfsense box running on a quad core i5 with two Intel Gigabit PCI Network cards.
Long and short is I tried to put all of these in cascaded router mode / DMZ+ and everyone of them gave me the same speeds. However if I hook up directly to the Pace I get 950 +/- down and 950 +/- up.
What gives? I have seen other people with the same problem. The Pace's firewall settings are horrendous, plus I can't monitor my bandwidth using NetFlow like I can with my pfsense. I'm very close to cancelling AT&T and going back to Comcast.
09-30-2017 9:05 AM
Try checking the duplex setting, see if that is the cause of the issue you are experiencing,
Tony–AT&T Community Specialist
- edited 10-03-2017 9:37 AM
Thanks I did, tried to put on Auto-Negotiate and chose 1000 Full Duplex, didn't make a difference. I also ran an iperf test on my pfsense router and all the various clients I have hooked up and am getting between 650-750 Mbps between clients. However speedtest.net and att.com/speedtest both are only showing like 60 Mbps down and 225 or so up. I am using all CAT 6 Cable, that was the first thing I checked.
- edited 10-08-2018 5:57 PM
Have you guys fixed this issue? I'm facing this issue now. I have the gigabit internet as well. I tried different combinations and everytime, the dmzplus mode drops the speed to 50mbps down and ~200mbps up. I've tried all suggested workarounds (ipv6 disabled, wireless turned off, auto-detect to 100Base and back to auto-detect). All this didn't do any good.
I tried doing this with my mac and my nighthawk router like this:
- Mac-Nighthawk-Pace (with Nighthawk as DMZ) = no good
- Mac-Pace (with Mac as DMZ) = no good
- Mac-Nighthawk-Pace (no DMZ) = I get gigabit speeds
- Mac-Pace (no DMZ) = I get gigabit speeds
Something is off with Pace DMZ+ mode that causes the internet speed to slow down to just ~50mbps.
- edited 11-13-2018 7:43 AM
Same EXACT issue here. I just got off the phone with support, no help at all. I did a MAC clone and verified that out of DMZ+ mode, I get full GBit. As soon as I enable DMZ+, I'm locked at 50Mb/s down.
EDIT: Per this thread comment on Reddit, https://www.reddit.com/r/ATT/comments/9nhajt/5268ac_issue_information/e96ykzd, I contacted support. Unfortunately, they do not have any other devices available other than the 5268 (go figure). They're sending me a new one. Hopefully it doesn't have the same firmware.
- edited 11-19-2018 6:37 PM
I'm seeing the same issue and I'm 99% sure it's due to an update. I had been running my own router behind the AT&T gateway for several months without any issues. I had to make a change in the AT&T Gateway but the UI page would never fully load to allow me to make my change. I had to reset the AT&T gateway and it after the reboot, it rebooted a couple more times. After I added my router back into the DMZ my speeds dropped to 50mbps. If I leave my router double NAT'd I get 900mbps.
If someone finds a resolution to this issue please let me know. I cannot deal with AT&T support because it's a waste of time. If this issue keeps up I will be forced to cancel my uverse.
11-20-2018 9:30 PM
Wow, and I just thought it was me. DMZ+ has been working fine for years with my pfSense setup, and just in the last few days it's been capped at 50. Sure enough if I Double NAT it now I'm getting full speed. This is absolutely unacceptable.
- edited 11-25-2018 10:02 AM
Same here. I usually get 850 mbps give or take, as soon as I enable DMZplus I get capped at 50 mbps. It was working for me for at least a year just fine. So I agree it must be due to a pace modem firmware update. It started happening 2-3 weeks ago for me.
Is there any way to revert to a previous pace modem firmware?
Customer service gave me $50 credit adjustment this month and will be calling ATT every month expecting the credit adjustment until this issue is resolved.
I first found the issue when I couldn't transfer files over SCP from home to my cloud servers (AWS and Linode). My SSH connections get killed if I try transferring any files larger than 5MB! It's such a pain.
Here are some MTR reports which made me aware the issue was on my side.
11-26-2018 7:25 PM
Me too!!! Argg I just wasted an hour or so to figure out the dmz plus is what is limiting my bandwidth to 50mbs. If I remove it then I get like 800.
I guess I gotta call their technical support when I get some time.
11-30-2018 6:11 AM
I confirm I see the same issue here with edgerouter 4 behind 5268AC with firmware 188.8.131.521418-att. DL capped at around 50 Mbps when DMZ+ enabled, and ~ 850 Mbps otherwise (fiber connection).
12-01-2018 4:08 AM
I'm dealing with this as well. I was even testing two identical Datto routers, one in DMZ+ and one using DHCP and couldn't figure out why the one on DHCP was running at line speed and the one in DMZ+ was 50/220.
This is unacceptable garbage (yet again) from ATT.
12-02-2018 10:57 AM
I just ran into this as well. My setup has been in DMZ mode for 1 1/2 years with no issue. Something has happened in the past few days that introduced this speed issue and general
Download Speeds are capped around 48Mbs. If I change the 'Lan IP Allocation between DMZ -to- Private IPs with firewall' I am back to 700-800Mbs.
I first noticed a issue on Friday November 30th. My security system could no longer get out but everything else seemed to work.. It uses a SIP protocol (voice over IP). A reboot of the gateway fixed the issue. Then I started having some issues with discord voice chat and some video streaming. That is when I noticed the speed dropped into this 40mbs range.
I also noticed at this point the 'wifi' light on the gateway was blinking when I know I had shut off the wifi at installation time (1 1/2 years ago). Somehow it had enabled the 5ghz band by itself.
It took forever to get the web page to come up so I could disable it again. It seems that some of the web pages on the gateway are now getting stuck for 10mins+.
This feels like a really bad software update.
My gateway information:
Model 5268AC , Hw version 260-2173300 , Software Version 184.108.40.2061418-att
For now I will have to live in non DMZ mode. I will try to contact support during the week. I really dread that process.
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