How to set up DHCP on a Huawei with access to the Internet?

Question

Huawei

Good evening everyone. This Huawei S5720S toy fell into the hands. I can't set it to router mode. Vlan 100 comes with IP 192.168.100.0/24 Internet on port 0/0/1. Created an internal vlan 120 with DHCP 10.1.1.0/24 . At connection to port c VLAN 120 ip the address on DHCP I receive. But there is no internet. IP address of Huawei with internet 192.168.100.5 . I set up the default route 0.0.0.0 0.0.0.0 192.168.100.5, there is an Internet on the Huawei itself, but there is no Internet from the ports where it is distributed DHCP 10.1.1.0/24. It rests on the gateway itself 10.1.1.1 (this is the IP huawei in vlan 120). Can anyone help me how to set it up so that from another vlan (created on a huawei) there is access to the Internet.
Thank you very much for your help.

Answer 1

What do you mean by the phrase "Vlan 100 comes with IP 192.168.100.0/24 Internet on port 0/0/1". At least put commas for clarity. Is there dhcp or what? What is the gateway?
From vlan 120 there should be a route to the hundredth vlan, otherwise how should routing between two isolated broadcast domains go between each other?