DX3301-T0 Becomes Unreachable Over LAN

JackZY
JackZY Posts: 10  Freshman Member
First Comment
in Home Router

My DX3301-T0 on firmware V5.50(ABVY.5.3)C0 has been in service as router for my FTTP service for 3 days, and although it performs really well during most of the day, it appears to become isolated from my LAN around 1am every night….and becomes unreachable via wifi or ethernet; my only recourse is to restart the router, after which it returns to normal.

I see that the last entries in the System Log are at 01:00 and which indicate a new PPP0E connection, but nothing thereafter until the morning restart. In the morning I find the router is unreachable, but indicating no problems on its LEDs, and my ONT continues to show the normal 3 green lights….so I have to restart the router. All then fine till next 1am. The PPP0E is set to Auto Connect.

Any suggestions as to a remedy please?

Jack

Accepted Solution

  • JackZY
    JackZY Posts: 10  Freshman Member
    First Comment
    Answer ✓

    Not using DNS Proxy…..I always use static ones (Google/OpenDNS etc) but just for this particular specific config I left it as ISP DNS (previous attempts had been Google).

    I too do the same re DHCP addresses, separate blocks for static (pc/laptop), and then separate DHCP block for Smartphones.

    I moved my PC to a different router eth port, but the same thing happened overnight and I had to reseat the cable in its router port to make it work.

    However, yesterday I thought that the router might be misguidedly ceasing all the LAN ports overnight because there is no active, powered LAN connection usually from around 5pm to 7am. So I connected a Raspberry Pi to one of the LAN ports and left it running overnight, with a small running Bash script sending a ping to the router every 10 minutes, and this morning find that my pc connects normally with no reseating required. So not a true 'fix', but an acceptable workaround.

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All Replies

  • Peter2
    Peter2 Posts: 141  Ally Member
    5 Answers First Comment Friend Collector First Anniversary

    What is the value of the DHCP lease time ? It should be 1 day at least .

  • JackZY
    JackZY Posts: 10  Freshman Member
    First Comment

    It is set at 1 day already.

    Prior to choosing to use the DX3301 I had been using a Plusnet Hub 2 and this problem didn't occur.

  • Peter2
    Peter2 Posts: 141  Ally Member
    5 Answers First Comment Friend Collector First Anniversary

    Have you activated the logs for DHCP , System and PPPoE in the maintenance log setting menu ?

  • JackZY
    JackZY Posts: 10  Freshman Member
    First Comment

    System and PPP0E logging were in force from the start; I've just added the 2 DHCP options and 'saved' the setting.

  • JackZY
    JackZY Posts: 10  Freshman Member
    First Comment

    I've reverted to my Plusnet router for the time being. Meanwhile I've tried to alter the DX firmware to an earlier version 4.2 also 4 but the firmware uploads fails. Will retry with a fresh setup of 5.3 in due course.

  • JackZY
    JackZY Posts: 10  Freshman Member
    First Comment

    Yesterday I reset the DX3301 to factory settings and reconfigured its settings from scratch. In operation it works a dream, so I left it on overnight once again. But this morning it was once more not reachable from my static-ip PC; pings failed. This time I then tried swapping the PC<>router cable to a different router LAN port, and found it was pingable and all worked fine. Swapped back to the original router ethernet port, also that now worked OK. Nothing in the log gives any clue tho.

  • Peter2
    Peter2 Posts: 141  Ally Member
    5 Answers First Comment Friend Collector First Anniversary

    DHCP is activated with option DNS proxy ?

    I myself always define a limited number of IP adresses for DHCP and give the static ones outside of this segment .

  • JackZY
    JackZY Posts: 10  Freshman Member
    First Comment
    Answer ✓

    Not using DNS Proxy…..I always use static ones (Google/OpenDNS etc) but just for this particular specific config I left it as ISP DNS (previous attempts had been Google).

    I too do the same re DHCP addresses, separate blocks for static (pc/laptop), and then separate DHCP block for Smartphones.

    I moved my PC to a different router eth port, but the same thing happened overnight and I had to reseat the cable in its router port to make it work.

    However, yesterday I thought that the router might be misguidedly ceasing all the LAN ports overnight because there is no active, powered LAN connection usually from around 5pm to 7am. So I connected a Raspberry Pi to one of the LAN ports and left it running overnight, with a small running Bash script sending a ping to the router every 10 minutes, and this morning find that my pc connects normally with no reseating required. So not a true 'fix', but an acceptable workaround.

  • Peter2
    Peter2 Posts: 141  Ally Member
    5 Answers First Comment Friend Collector First Anniversary

    maybe you can use static DHCP for the devices …

  • JackZY
    JackZY Posts: 10  Freshman Member
    First Comment

    Thanks Peter, yes I could….I did think about it, but for instance, when I'm trying/swapping routers I'd then need to enter all the different mac addresses…..and in the past I've had many routers (over a 12 year period I've bought, tested and resold approx 250 of them - I don't do that anymore, but I do like the occasional dabble!). Simpler to give each new pc/laptop device a planned fixed setup (which I use for rdp access to many of them).

    My all-time favourite DSL modem router is the Zyxel VMG3925 with Billion 8800NL close second. Quite a few higher-priced ones didn't do so well on my earlier pre-FTTC/FTTP 4 mile line. However, now with FTTP, this DX3301 is number 1.

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