DHCP internet on Huawei 5720 switch?

Question

Computer networks

Given: RJ45 wire from the router (physically and programmatically not available) and a HUAWEI s5720 switch. DHCP is configured on the wire and an IP like 192.168.64.133 will be displayed. VLANs are cut on the switch and its own network is configured like 172.25.3.0.
How to get the Internet on the switch while maintaining your network?

Answer 1

If the RJ45 wire from the router is really physically inaccessible, then it will not be possible to get the Internet to the switch, because the wire and the switch must first be physically connected.
If the wire is still physically available, then it must be connected to the switch.
And then the question arises, in which VLAN do you place the port with the cable from the router. If there is some of your host or router in the same VLAN, then via DHCP it will receive not only its IP, but also the network mask and gateway address. Ports assigned to other VLANs on the switch will theoretically be separated from the Internet and keep broadcast traffic in "their" local mesh-vlan.
I apologize for the vague terminology of the answer, but it seems to me that it roughly corresponds to the level of wording in the question.

Answer 2

I solved my problem, and here's how: although I'm not an expert, it's not a fig, but oh well.
The port that looks at the Internet started in Vlan with the dhcp alloc setting, on other ports I raised the Vlans I needed. I already found out the IP of the router that distributes the Internet, I registered the statics of the form 0.0.0.0 0.0.0.0 192.168.64.1.
Since there is no access to the router and there is no way to register NAT, a PC was found that went out on a different cord, and as I was told, apart from this PC, nothing else is connected through this cord, the IP output and poppy of this PC are registered on the router.
I changed the poppy address on the switch port towards the router to the poppy PC and it all worked.