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  1. #1
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    GT-AC 5300 LAN dropping out (in traffic stats)

    Hi All,
    Please excuse any mistakes or lack of forum protocol with my first post here.

    WIred LAN dropout

    I have recently purchased an AC5300 (firmware 3.0.0.4.384_81695-gfade4d7) I am keeping an eye on usage of my devices and have noticed that periodically my Wored LAN throughput spikes down to zero. I don't know if this is genuine or a bug. I'm wondering if there may be something on my network that is sending out corrupt packets, or if it is something malicious or anything else or perhaps even a router issue.

    I just wondered if anyone might have any clues where to start please, other than individually turning off each and every wired device to figure out which is causing it. That might sound easy, only 8 LAN ports, but I have tp-link powerline devices in the house also and the main one plugged into a router LAN port.

    There is nothing in the router system log that coincides with these spikes (that I can see).

    Any clues or ideas welcome please. ?



    Second observation/issue

    A slightly related note, using bandwidth monitor also shows WAN download speed of circa 4MB/S (first image) but in this picture attached I have a PS4 doing a download and it's showing 32.x MB/S in the individual clients and over view screen (my maximum) in the client list, why doesn't the WAN show 32/33 MB download in the traffic statistics ?

    Thanks for any possible assistance / ideas. Images attached below.
    Miniatura de Adjuntos Miniatura de Adjuntos IMG_7675.jpg  

    IMG_7678.jpg  

    IMG_7676.jpg  

    Last edited by MC123; 06-13-2020 at 01:43 PM.

  2. #2
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    Quote Originally Posted by MC123 View Post
    Hi All,
    Please excuse any mistakes or lack of forum protocol with my first post here.

    WIred LAN dropout

    I have recently purchased an AC5300 (firmware 3.0.0.4.384_81695-gfade4d7) I am keeping an eye on usage of my devices and have noticed that periodically my Wored LAN throughput spikes down to zero. I don't know if this is genuine or a bug. I'm wondering if there may be something on my network that is sending out corrupt packets, or if it is something malicious or anything else or perhaps even a router issue.

    I just wondered if anyone might have any clues where to start please, other than individually turning off each and every wired device to figure out which is causing it. That might sound easy, only 8 LAN ports, but I have tp-link powerline devices in the house also and the main one plugged into a router LAN port.

    There is nothing in the router system log that coincides with these spikes (that I can see).

    Any clues or ideas welcome please. ?



    Second observation/issue

    A slightly related note, using bandwidth monitor also shows WAN download speed of circa 4MB/S (first image) but in this picture attached I have a PS4 doing a download and it's showing 32.x MB/S in the individual clients and over view screen (my maximum) in the client list, why doesn't the WAN show 32/33 MB download in the traffic statistics ?

    Thanks for any possible assistance / ideas. Images attached below.

    if possible, setup a ping session on your lan device, and see if the drop take place, and the ping session stop correspondingly.

  3. #3
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    Thanks, I will try this.

    I have attached the recent log. I have notices a few entries as follows: (this is filtered) what port is eth2 (Ext Swith port 1) (logical port 9) is that the ethernet 1 cable ? I notice it seems to go down for about 5 seconds at a time ?

    attached Further down is the full log, can anyone spot anything of concern in there ? For some reason the box rebooted itself (I assume today , when the date reset to May 5th again).

    Full log here if anyone can spot if router is doing something strange https://drive.google.com/file/d/17rQ...ew?usp=sharing


    May 5 06:05:15 kernel: eth5 (Ext switch port: 7) (Logical Port: 15) Link UP 1000 mbps full duplex
    May 5 06:05:15 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link UP 1000 mbps full duplex
    May 5 06:05:15 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link DOWN.
    May 5 06:05:15 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link UP 1000 mbps full duplex
    Jun 13 06:27:18 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link DOWN.
    Jun 13 06:27:27 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link UP 1000 mbps full duplex
    Jun 13 15:15:02 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link DOWN.
    Jun 13 15:15:04 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link UP 1000 mbps full duplex
    Jun 14 11:27:19 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link DOWN.
    Jun 14 11:27:35 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link UP 1000 mbps full duplex
    Jun 14 11:43:08 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link DOWN.
    Jun 14 11:43:18 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link UP 1000 mbps full duplex
    Jun 14 17:09:21 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link DOWN.
    Jun 14 17:09:25 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link UP 100 mbps full duplex
    Jun 14 21:08:19 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link DOWN.
    Jun 14 21:08:24 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link UP 1000 mbps full duplex
    Jun 14 21:10:20 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link DOWN.
    Jun 14 21:10:24 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link UP 100 mbps full duplex
    Jun 15 05:21:02 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link DOWN.
    Jun 15 05:21:07 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link UP 1000 mbps full duplex

  4. #4
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    I noticed the following in the logs,

    Ethernet Auto Power Down and Sleep: Enabled
    May 5 06:05:15 kernel: Energy Efficient Ethernet: Enabled

    How do I disable this to see if this is causing the drop ?

  5. #5
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    Quote Originally Posted by MC123 View Post
    Thanks, I will try this.

    I have attached the recent log. I have notices a few entries as follows: (this is filtered) what port is eth2 (Ext Swith port 1) (logical port 9) is that the ethernet 1 cable ? I notice it seems to go down for about 5 seconds at a time ?

    attached Further down is the full log, can anyone spot anything of concern in there ? For some reason the box rebooted itself (I assume today , when the date reset to May 5th again).

    Full log here if anyone can spot if router is doing something strange https://drive.google.com/file/d/17rQ...ew?usp=sharing


    May 5 06:05:15 kernel: eth5 (Ext switch port: 7) (Logical Port: 15) Link UP 1000 mbps full duplex
    May 5 06:05:15 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link UP 1000 mbps full duplex
    May 5 06:05:15 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link DOWN.
    May 5 06:05:15 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link UP 1000 mbps full duplex
    Jun 13 06:27:18 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link DOWN.
    Jun 13 06:27:27 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link UP 1000 mbps full duplex
    Jun 13 15:15:02 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link DOWN.
    Jun 13 15:15:04 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link UP 1000 mbps full duplex
    Jun 14 11:27:19 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link DOWN.
    Jun 14 11:27:35 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link UP 1000 mbps full duplex
    Jun 14 11:43:08 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link DOWN.
    Jun 14 11:43:18 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link UP 1000 mbps full duplex
    Jun 14 17:09:21 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link DOWN.
    Jun 14 17:09:25 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link UP 100 mbps full duplex
    Jun 14 21:08:19 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link DOWN.
    Jun 14 21:08:24 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link UP 1000 mbps full duplex
    Jun 14 21:10:20 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link DOWN.
    Jun 14 21:10:24 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link UP 100 mbps full duplex
    Jun 15 05:21:02 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link DOWN.
    Jun 15 05:21:07 kernel: eth2 (Ext switch port: 1) (Logical Port: 9) Link UP 1000 mbps full duplex

    not sure if your client card always attaches to LAN 3
    just make

    1. disable client card eco mode or power saving mode
    2. swap to other LAN port

  6. #6
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    the eco function can be turned off using the phone's router application, there is the "ASUS ROUTER" function

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