Pool size issue

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carles

carles Posts: 5

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July 2018 edited April 2021 in Security

I'm struggling with an USG310 firewall.

I have an interface which IP is 192.168.0.1, netmask 255.255.252.0.

I'd like to setup its DHCP server so as the pool starts at 192.168.1.1 and ends at 192.168.3.229 (pool size 737).

The problem is that the firewall does not allow me to specify a pool larger than 250.

If I change the inicial address to 192.168.0.1, then I'm allowed to specify a size of 500 (aprox).

I don't understand the reason. Any help? Thanks in advance!

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Accepted Solution

Zyxel_Stanley Posts: 1,367 Zyxel Employee

July 2018 edited July 2018 Answer ✓
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Hi @carles
Welcome to Zyxel community.

Before you saving the IP address and DHCP configuration, the system checking if it has overlap to others interfaces.

In the default setting, your interface address 192.168.0.0/22 has overlap to LAN2 and dmz interfaces. So you can’t save configuration successfully.

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carles Posts: 5 Freshman Member

July 2018
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Sorry,

I didn't take attention to the settings of the other interfaces...

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Zyxel_Stanley Posts: 1,367 Zyxel Employee

July 2018 edited July 2018 Answer ✓
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Hi @carles
Welcome to Zyxel community.

Before you saving the IP address and DHCP configuration, the system checking if it has overlap to others interfaces.

In the default setting, your interface address 192.168.0.0/22 has overlap to LAN2 and dmz interfaces. So you can’t save configuration successfully.

5

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