How to Remove the Network Configuration on Neutron

1. Perform this step on the Horizon dashboard.
   1. Disassociate all floating IP addresses.
   2. Remove all floating IP addresses.
2. On a terminal window, type the following commands:

   # neutron router-gateway-clear router-id external-network-id
   
   # neutron router-interface-delete router-id subnet-id

   1. To remove the router gateway interface, type the following command:

      # neutron router-gateway-interface-delete router-id external-network-id
      

   2. To remove the remaining router interfaces, type the following command:

      # neutron router-interface-delete router-id subnet-id

3. Perform the following on the Horizon dashboard.
   1. Terminate all VM instances.
   2. Delete the subnets.

      If problems occur while deleting subnets, refer to How to Remove Vports.

   3. Delete the network.