GS1915-8EP had offline on NCC

Tlml
Tlml Posts: 3
Friend Collector First Comment
edited November 2023 in Nebula

My switch, GS1915-8EP work normally, status online on NCC and had lasted firmware

a few days ago, it suddenly went offline on NCC until today, still not online again

connected devices behind it, seems to be working properly, including APs, status are online on ncc

I can not connect to my switch on local, it seems don’t have a ip, i can't find it with ip scan tool

Please help me, thanks

Best Answers

  • Tlml
    Tlml Posts: 3
    Friend Collector First Comment
    Answer ✓

    ZON utility can scan my switch, it’s IP is 0.0.0.0

    After settings static ip, working now

    I don’t know why have problems with DHCP IP

  • Zyxel_Melen
    Zyxel_Melen Posts: 2,091  Zyxel Employee
    250 Answers Zyxel Certified Network Engineer Level 1 - Switch Third Anniversary 1000 Comments
    Answer ✓

    Hi @Tlml,

    The switch's IP is 0.0.0.0 could be due to the DHCP pool size running out. You can set static IP or enlarge the DHCP pool size.

    For the switch offline problem, did you reboot the switch between August 26 - 27?

    Zyxel Melen


    Don't miss this great chance to upgrade your Nebula org. for free! 


All Replies

  • Tlml
    Tlml Posts: 3
    Friend Collector First Comment
    Answer ✓

    ZON utility can scan my switch, it’s IP is 0.0.0.0

    After settings static ip, working now

    I don’t know why have problems with DHCP IP

  • Zyxel_Melen
    Zyxel_Melen Posts: 2,091  Zyxel Employee
    250 Answers Zyxel Certified Network Engineer Level 1 - Switch Third Anniversary 1000 Comments
    Answer ✓

    Hi @Tlml,

    The switch's IP is 0.0.0.0 could be due to the DHCP pool size running out. You can set static IP or enlarge the DHCP pool size.

    For the switch offline problem, did you reboot the switch between August 26 - 27?

    Zyxel Melen


    Don't miss this great chance to upgrade your Nebula org. for free! 


  • Tlml
    Tlml Posts: 3
    Friend Collector First Comment
    https://community.zyxel.com/en/discussion/comment/56289#Comment_56289

    Hi @Zyxel_Melen

    i don't think DHCP pool size is over, the DHCP size = 251, and less than 30 devices

    I have restarted the switch and router many times, tried unplugging all cables... and also try ip scan and ip scan tools

    it was only solved when i used ZON utility, i was so happy when it appeared on the list i know the problem is solvesolved. i know the problem is in the ip, but i cant find the device to set it static ip

  • Zyxel_Melen
    Zyxel_Melen Posts: 2,091  Zyxel Employee
    250 Answers Zyxel Certified Network Engineer Level 1 - Switch Third Anniversary 1000 Comments

    Hi @Tlml,

    I'm glad to hear that your issue has been resolved. If the switch is offline again, please reference this FAQ first:

    https://community.zyxel.com/en/discussion/17937/zyxel-nebula-switch-troubleshooting-guide

    Zyxel Melen


    Don't miss this great chance to upgrade your Nebula org. for free! 


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