About Configure the DHCP to assign the Default-Gateway

Applications IP Networking
1

I have a question. How to write the DHCP to assign the default-gateway to clients.

Thank you.

2

More details are required
What type is your DHCP server ISC DHCP or something else ?

3 
pool {
		
		option routers 10.13.7.1;
		option domain-name-servers 10.13.7.2;
		range 10.13.7.310.13.7.254;
		}