DHCP Larger the 256

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CRU_Technologies
CRU_Technologies Posts: 24  Freshman Member
Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Administrator - WLAN Zyxel Certified Network Administrator - Nebula Zyxel Certified Network Administrator - Switch
in Security
HI,
I have had a quick look but can't see an answer.
On a USG300 is it possible to have a DHCP range larger than 256 addresses?
Simon.

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  • PeterUK
    PeterUK Posts: 3,866  Guru Member
    100 Answers 2500 Comments Friend Collector Seventh Anniversary
    Answer ✓
    Yes just change the subnet
  • CRU_Technologies
    CRU_Technologies Posts: 24  Freshman Member
    Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Administrator - WLAN Zyxel Certified Network Administrator - Nebula Zyxel Certified Network Administrator - Switch
    That simple ey? Would of been beneficial if the error on the USG was a bit more informative than 'Computer Says No'.
    Thanks though.
    Simon.
  • PeterUK
    PeterUK Posts: 3,866  Guru Member
    100 Answers 2500 Comments Friend Collector Seventh Anniversary
    you can use this to help where Host Address Range will be and on the DHCP increase the pool size 
    Online IP Subnet Calculator (subnet-calculator.com)
  • mMontana
    mMontana Posts: 1,428  Guru Member
    Zyxel Certified Network Administrator - Security Zyxel Certified Network Administrator - Switch 50 Answers 1000 Comments
    edited September 2021
    @CRU_Technologies AFAIK someone is managing a firewall should be aware about the 254 hosts limit of .C Class networks (subnet mask 24bits/255.255.255.0).
    I used 23 Bits mask (255.255.254.0) for allowing more than 300 customer devices into an hotspot network.

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