USGFLEX 50 ip-address change

MattiS
MattiS Posts: 8  Freshman Member
First Comment Friend Collector
in Security

I need to change LAN ip-addresses from 192.168.10.xxx to 192.168.100.xxx

I haven't been able to find a spot where to do it?

Best Answers

  • Zyxel_Judy
    Zyxel_Judy Posts: 1,896  Zyxel Employee
    Zyxel Certified Network Engineer Level 2 - Nebula Zyxel Certified Network Engineer Level 2 - Switch Zyxel Certified Network Engineer Level 2 - Security Zyxel Certified Network Engineer Level 1 - Nebula
    Answer ✓

    Hi @MattiS ,

    Please see PeterUK's recommendation firstly.

    If you still want to change your LAN IP addresses from 192.168.10.xxx to 192.168.100.xxx, you can follow these steps:

    1. Navigate to: Configuration > Network > Interface
    2. Select the LAN interface you want to modify (e.g., lan1)
    3. Update the IP address
    4. Adjust DHCP configuration if necessary
    image.png
  • MattiS
    MattiS Posts: 8  Freshman Member
    First Comment Friend Collector
    Answer ✓
    https://community.zyxel.com/en/discussion/comment/71159#Comment_71159

    I want the LAN ip addresses to be 192.168.100.xxx. F.eg. Printer address is in the old firewall 192.168.100.200, so I want the printer to be the same address in this new Flex50.

All Replies

  • PeterUK
    PeterUK Posts: 3,624  Guru Member
    100 Answers 2500 Comments Friend Collector Seventh Anniversary
    edited October 2024

    If you have 50 devices with DHCP set for x days and you change the LAN subnet on the flex you have to reboot devices or wait x days for them to get the new IP in that subnet or change lease time to 3mins wait x days on the old lease then change the IP subnet and your devices will get a new IP in that subnet in 3 mins

    I don't recommend 192.168.100.xxx if you have a modem thats on 192.168.100.1

  • Zyxel_Judy
    Zyxel_Judy Posts: 1,896  Zyxel Employee
    Zyxel Certified Network Engineer Level 2 - Nebula Zyxel Certified Network Engineer Level 2 - Switch Zyxel Certified Network Engineer Level 2 - Security Zyxel Certified Network Engineer Level 1 - Nebula
    Answer ✓

    Hi @MattiS ,

    Please see PeterUK's recommendation firstly.

    If you still want to change your LAN IP addresses from 192.168.10.xxx to 192.168.100.xxx, you can follow these steps:

    1. Navigate to: Configuration > Network > Interface
    2. Select the LAN interface you want to modify (e.g., lan1)
    3. Update the IP address
    4. Adjust DHCP configuration if necessary
    image.png
  • MattiS
    MattiS Posts: 8  Freshman Member
    First Comment Friend Collector
    Answer ✓
    https://community.zyxel.com/en/discussion/comment/71159#Comment_71159

    I want the LAN ip addresses to be 192.168.100.xxx. F.eg. Printer address is in the old firewall 192.168.100.200, so I want the printer to be the same address in this new Flex50.

  • MattiS
    MattiS Posts: 8  Freshman Member
    First Comment Friend Collector

    Hello!

    Thank you, for your answer, Judy!

    I did that and added a bit lower a IP Pool start address to 192.168.100.33.

    However, now I see no computers in DHCP table! Why?

    I can't fix any IP addresses now.

    Best regards, Matti

  • PeterUK
    PeterUK Posts: 3,624  Guru Member
    100 Answers 2500 Comments Friend Collector Seventh Anniversary

    reboot the computers 

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