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DNS Timeout

12 New Member
Hi everyone,
I live in rural France and at long last have accesss via WiFi to ADSl. Only problem it cuts out about every 30 minutes. A ping test to IP shows no problem but to the DNS primary, initially 70ms then gradually increases to 120, 200, etc until 'timeout'. It then remains offline for about 3 minutes. Our supplier seems either reluctant to address the problem or incapable. Does anyone have any ideas what might be the problem?
Thanks in anticipation,
Chris.
May 28 '09 #1
29 4798
JosAH
11,448 Recognized Expert MVP
Do you have the same problems when you're directly hooked up to that ADSL line, i.e. no WiFi involved (if that is possible for you)? If you can connect directly and don't experience those problems, blame it on your WiFi connection and try another band (there are 13 of them available in Europe).

WiFi is extremely sensitive to relative humidity and it can build up slow oscillating waves that ruin your connection. What's distance between your WiFi access point and your ADSL wired connection? Are they in the line of sight?

kind regards,

Jos
May 29 '09 #2
Chris1949
12 New Member
Thanks for your reply. WiFi transmitter in line of site, about 1.86 miles. Ping test on IP 10.10.10.15 no problem. Ping test on 85.31.192.22 causes problems. It doesn't appear to make any difference if it is dry or wet.
Chris.
May 29 '09 #3
Ciary
247 Recognized Expert New Member
@Chris1949
i'm not sure but isnt 10.10.10.15 an inside IPaddress? and 85.31.192.22 an outside IPaddress? if thats the case, the problem will probably your router. i'm not sure if you have access to it but if you do, check NAT/PAT, DNS and physical interfaces (are the interfaces on or off and should they be what they are) after that check routingprotocol (RIP, (E)IGRP(if cisco or linksys), OSPF,...)
May 29 '09 #4
Chris1949
12 New Member
Hi,
Quite right 10.10.10.15 is internal. The hoster address is 10.10.10.1
Hoster is called MESHNET.fr
May 29 '09 #5
Ciary
247 Recognized Expert New Member
then its probably a routing problem. do you have access to the router?
May 29 '09 #6
NeoPa
32,584 Recognized Expert Moderator MVP
I suggest it would be useful if you describe the topology (what links to where) of your network, with IP addresses where possible. This will give us a better chance of understanding what may be happening in the system and/or devising tests that may help determine where the issue lies.
May 29 '09 #7
NeoPa
32,584 Recognized Expert Moderator MVP
Sometimes PINGs can be unreliable. Various routing devices spoof addresses they think they know they deal with. Essentially they say "I've seen this work before, so rather than waste the traffic shooting it off I'll reply more quickly myself, pretending to be the device requested."

I suggest PathPing or TraceRt instead.
May 29 '09 #8
JosAH
11,448 Recognized Expert MVP
Is there someone else in the vicinity using the same (or near) band on the Wifi band (+- 4GHz)?

Maybe there's an old micro wave oven nearby ...

Another approach could be to install larger antennas on both sides; maybe you can use a couple of extra dBs.

kind regards,

Jos
May 29 '09 #9
NeoPa
32,584 Recognized Expert Moderator MVP
Without further detailed information I would think Jos is most likely on the right lines here.
@JosAH
Don't let him confuse you with reference to databases. He's talking about Decibels :D
May 29 '09 #10

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