changing IP address of USB port

The BBB acquires IP address 192.168.7.2 on the USB port.
This does not give it access to my router and the internet at 192.168.1.1.
I’d like to assign a different IP address to the USB port.
But when I change the file etc/network/interfaces the change is not honored and it comes up 192.168.7.2 anyway.

Did you setup your host pc to act as a bridge between the 192.168.1.1
network and your usb 192.168.7.2?

Usually, in a all linux setup:

sudo sh -c "echo nameserver 8.8.8.8 > /etc/resolv.conf"

is enough on your bbb,

for a windows environment, enable internet connection sharing..

Regards,