Nokia Network Voyager for IPSO 4.0 Reference Guide 73If no change is desired, skip the step.a. To change the IP address, enter the appropriate IP address in the New IP address field,.There is no default.b. In the New mask length field, enter the appropriate value. The range is 8 to 30, and thereis no default.c. To delete an IP address, click the Delete box.NoteChanging an IP address and deleting an IP address at the same time prevents multipleaddresses from being assigned to a single interface.8. Click Apply.9. Click Save.Token Ring ExampleThis section describes how you might use Network Voyager to configure the interfaces of yourIP security platform in an example network.In a company’s main office, IP650 A terminates a serial line to an Internet service provider,running PPP with a keepalive value of 10.IP650 A also provides Internet access for an FDDI ring and a remote branch office connected awith Token Ring.The branch office contains IP650 B, which routes traffic between a local fast Ethernet networkand a Token Ring. IP650 B provides access to the main office and the Internet. This exampleconfigures the Token Ring interface on IP650 A.