You can view and modify an existing subnet specification of an external network. For example, you can add IP ranges and IP addresses to the IP pool.


  1. Click the Manage & Monitor tab and click External Networks in the left pane.
  2. Right-click the external network name and select Properties.
  3. Click the Network Specification tab.
    You can view the current subnets with their Classless Inter-Domain Routing (CIDR) settings, DNS settings, and IP pools.

    The network CIDR is in format network_gateway_IP_address/subnet_prefix_length, for example,

  4. To modify a subnet specification, select the row of the target subnet, and click Modify.
  5. Modify the settings and the IP pool, and click OK.
  6. Click OK.