Flex 700H reboots and issue

ticsystems
ticsystems Posts: 69  ZCNE Certified
First Comment Friend Collector Nebula Gratitude Fifth Anniversary
in USG FLEX H Series

Hy team.

I'm having serious issue with two 700H firmware 1.10(ABZI.1).

One of them had to go out of production and I had to buy a Flex700 and the problems were gone.

I have random reboots and system crashes.
One of the issue is that it seems that the device works but it does not assign DHCP and you cannot access it. I set a static IP and I can't access it via GUI. In console I can ping all interfaces, but the firewall is still blocked. Restarting solves the problem.

Another issue. Sometimes, when I connect a Zyxel 1 meter DAC or other DAC cable to the SFP+ module it restarts automatically. This is a problem because my ISP works with SFP+.
I have a video where the error appears.
With a cable in the console the error does not appear, it just restarts.

Another issue is that I cannot use any Transceiver because my 700H cannot work with them.

Another issue is that through SFP+ and DAC between switches is not correct. The vlan assignment is incorrect. By switching to copper the problems were solved.

I think the problems are in the SFP+ module

Since October it has been one problem after another....
I have tried to open support tickets but I have no response from Zyxel and I am desperate.

I have a 700H in a box and the licenses are running and another one in production that the customer is starting to get angry.

I need help, urgently....

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All Replies

  • PeterUK
    PeterUK Posts: 3,388  Guru Member
    100 Answers 2500 Comments Friend Collector Seventh Anniversary

    Its a whole new OS so problems are going to happen I guess the SFP+ module where not tested all that well sadly...

    as a workaround for your ISP by SFP+

    https://www.amazon.co.uk/10Gtek-Ethernet-Converter-1000Base-Tx-Transceiver/dp/B01MG48FD5/ref=sr_1_9

  • ticsystems
    ticsystems Posts: 69  ZCNE Certified
    First Comment Friend Collector Nebula Gratitude Fifth Anniversary

    Peter, it's what I do but this cooper makes me lose internet packages. The router is an Accedian and it is special. Just like Cisco.

  • Rathos
    Rathos Posts: 5  Freshman Member
    Zyxel Certified Network Engineer Level 2 - Security Zyxel Certified Network Engineer Level 1 - Security First Comment

    Good day together

    I now also have a 700H which I wanted to connect to an XGS1930-52HP via Zyxel DAC 1m SFP+ cable. The DHCP works correctly on all three VLANs. But I can't get access to the WAN and the firewall itself. Is this a setting of mine, or still a bug?

    Best regards
    Niklas

  • DanniKool
    DanniKool Posts: 37  Freshman Member
    First Answer First Comment Sixth Anniversary

    The SPF+ is still an issue/bug - especially with firmware 1.20. I'm using port 13 with a Zyxel SFP+ transciever as LAN connection to our XGS1930. I had to downgrade from 1.20P0 and 1.20P1 to a 1.10P1 beta firmware to make it stable. Zyxel Tech are working on ours to hopefully fix it.

  • juewerner
    juewerner Posts: 5  Freshman Member
    First Comment Third Anniversary

    I have the same problem. The SPF+ has an bug. The DHCP works not at a new start.

  • DanniKool
    DanniKool Posts: 37  Freshman Member
    First Answer First Comment Sixth Anniversary

    Run arp -a from a command prompt - copy the mac address of your gateway. In your H series firewall go to Network>Interface>the interface of your SFP+ (ge3) - select Overwrite Default MAC Address and insert the copied MAC address from the command prompt.

    That should do a workaround to the bug

  • juewerner
    juewerner Posts: 5  Freshman Member
    First Comment Third Anniversary

    It does not work. After reboot the switch (and all other switches/Access Points) behind the firewall on SFP+ Port lost the connection to the nebula cloud. Only the short unplugging of the cable connects new to nebula

  • DanniKool
    DanniKool Posts: 37  Freshman Member
    First Answer First Comment Sixth Anniversary

    That fixed it on our 700H - are you using the SPF+ for external or internal interface? What firmware level are you on?

  • juewerner
    juewerner Posts: 5  Freshman Member
    First Comment Third Anniversary

    Hallo, firmware level is the latest: v1.21and the SPF+ is a internal port.

  • ticsystems
    ticsystems Posts: 69  ZCNE Certified
    First Comment Friend Collector Nebula Gratitude Fifth Anniversary
    https://community.zyxel.com/en/discussion/comment/68622#Comment_68622

    Can you try setting the negotiation to 10GB and not Auto?

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