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  1. #1

    RE450 spams time.nist.gov and several other NTP servers constantly

    Model :

    Hardware Version :

    Firmware Version :

    ISP : [/COLOR]

    Hi,

    I have a RE450 repeater installed since a couple months ago, working OK, no problems.

    Recently I installed a Pihole ad blocker which happens to log every DNS access, and I have seen that the RE450 spams CONSTANTLY to several NTP and DNS servers:

    time.nist.govnz.pool.ntp.org
    time-nw.nist.gov
    au.pool.ntp.org
    time-b.nist.gov
    time-a.nist.gov
    a.root-servers.net

    which completely degrades statistics, and possibly creates unwanted traffic to those sites.

    Is this a normal behaviour?
    Can it be avoided or filtered?

    Thanks for your support.

    davidsn.

  2. #2

    RE305 also flooding network with ntp requests

    Hi,

    the RE305 is exhibiting the same behavior (at least in AP mode) and flooding the network with a massive amount of ntp requests (about 80 per minute, i.e. 1.3 per second). Have you found a way to turn it off? Seems to me like a bug in the firmware.

    Regards,
    Michael Jahn

  3. #3
    Hi,

    I think it's fine, it won't affect the network.

  4. #4

    metered connections?

    ... you are ignoring the fact that some may have metered connections. This is a bug and will eat into your data plan - absolutely unnecessarily.

  5. #5
    I investigated this issue and wrote up my findings in detail for anyone who is interested.

    Current versions of TP-Link repeater firmware use 715,4 MB per month just to show us “Internet Status: Connected” on a page that no one ever visits is just stupid. It’s implemented in a way that puts a strain on consumer’s bandwidth caps and on public infrastructure.

    Windows uses 1,6 KB per month for NTP. TP-Link repeaters shouldn’t use any more than that.
    Last edited by Firmware; 12-18-2017 at 16:05.

  6. #6
    I have the same device and found the same thing, it will send many DNS and NTP request to detect the online status. I really can understand the device need to know the Internet status, it will also useful for me soem time.
    But I don't want it send too many packages always, although the data of 7MB/Day even can be ignored. So I tried to contact the support the tolink.\
    And fortunately, they told me that are optimizing this mechanism, too, then they provided me a Beta for my current usage, so lucky! It seems that the official FW may be released soon...I think...

    I can share my Beta to you with RE450 V1.
    http://support.tp-link.com/f/0b37ccf57c/?dl=1

  7. #7
    TP-Link has released new firmware for many of their range extenders that address this issue. The update changes the behavior from NTP+DNS requests on the public internet to ICMP pings on the local network.


 

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