Mobiles connected to wifi repeater mode but no internet access

[jonathan88]

Hi all, merry festive season,

I have a AC68U connected to a my modem from my isp and pumping out reliable wifi. Recently we added a AC88U set up in repeater mode to try and force our devices to connect to the 5ghz band which none of our neighbours are using.

Laptops seem to be able to connect fine most of the time. But both android and iphone mobiles will connect OK for maybe 30 min before displaying error message that wifi is connected but no internet available. This is when connected to the repeater.

At this time, the AC88U [repeater] says connected to the internet, and pings successfully to google from the tools screen. I've tried giving static ips, setting the wifi bands and many other setttings but not really sure how to further diagnose the problem.

Any ideas?

 

[RASG]

yes.
traceroute and see where it stops

| ~ : $ traceroute google.com.br

traceroute to google.com.br (216.58.202.35), 64 hops max, 52 byte packets

 1  powerbox.home (192.168.25.1)  2.328 ms  1.753 ms  1.730 ms
 2  bla.net.br (123.123.126.59)  6.623 ms  8.854 ms  8.331 ms
 3  ble.net.br (123.123.75.223)  6.826 ms  8.442 ms  6.471 ms

or this very nice tool called mtr (combines tracert with ping)

ramon@ac66u:/tmp/home/root# mtr --report-wide --show-ips -i 1 -Z 1 globo.com

Start: Sat Dec 31 15:23:48 2016

HOST: ac66u                                                   Loss%   Snt   Last   Avg  Best  Wrst StDev

  1.|-- PowerBox.home (192.168.25.1)                             0.0%    10    0.6   1.9   0.6  11.4   3.2
  2.|-- bla.net.br (123.123.126.59)              40.0%    10    4.8   5.3   4.8   5.6   0.0
  3.|-- ble.net.br (123.123.75.223)   0.0%    10    5.3   5.5   5.3   5.9   0.0
  4.|-- bli.net.br (123.123.64.101)  0.0%    10   22.9  24.7  22.2  26.9   1.4
  5.|-- ???                                                     100.0    10    0.0   0.0   0.0   0.0   0.0
  6.|-- 192.168.30.14                                            0.0%    10   25.0  24.6  23.6  25.8   0.5
  7.|-- ???                                                     100.0    10    0.0   0.0   0.0   0.0   0.0
  8.|-- 186-192-90-5.ptr.globo.com (186.192.90.5)                0.0%    10   21.3  21.3  20.9  21.4   0.0

also check your dns log for query / reply

ramon@ac66u:/tmp/home/root# tail -f /mnt/EXT3_29G/config/rede/dnsmasq/dnsmasq.log

Dec 31 15:17:27 dnsmasq[8747]: query[A] google.com.br from 192.168.25.50
Dec 31 15:17:27 dnsmasq[8747]: forwarded google.com.br to 192.168.25.1
Dec 31 15:17:27 dnsmasq[8747]: reply google.com.br is 216.58.202.35