PDF user manual for CopperEdge 150

+',$1HWPRGHOTo manage separate voice and data circuits on DSL ports andWAN ports and to allow economical use of IP addressing, theCE150 provides a dual netmodel, called High Density IP Access(HDIA). It requires that you set up base IP addresses and addressranges (or net masks) for voice and data subnets on WANports. It also requires that you set up base IP addresses and addressranges (or net masks) for IADs and hosts on DSL ports.HDIA allows you to place a router and hosts on different premisesbut on the same subnet and then assign to hosts a seriesof contiguous addresses by means of power-of-2 addressingboundaries. You must set the base address and address rangeson the DSL ports, but you must set the individual IP addresseson the hosts locally. Note in the two diagrams below that youmust set up two HDIA groups: one for data and one for voice.Voice Circuit (10.0.21.0)Data Circuit (10.0.20.0)IP Addr: 10.0.20.1DefaultRouterHostIADHDIAPhonesIP Addr: 10.0.21.2DSLAMIP Addr: 10.0.21.1VoiceGatewayHDIA Netmodel—Data and Voice NetworksEach IAD has an IP address for its voice VC. Similarly, the hoststhat the IAD serves through its Ethernet port have IP addresseson the data subnet. The data VCs on the subnet must bemapped to a single data VC on a WAN port. Also the data VC onthe WAN port must be mapped to an upstream data routerwhich itself must have an IP address on the subnet.IP Addr: 10.0.20.2Net mask: (/32)PII: 1.4.13.528IP Addr: 10.0.20.0Net mask: (/26)PII: 1.2.1.20IP Addr: 10.0.20.1DefaultRouterHostIADHDIAPhonesIP Addr: 10.0.21.2IP Addr: 10.0.21.2Net mask: (/32)PII: 1.4.13.22DSLAMIP Addr: 10.0.21.0Net mask: (/26)PII: 1.2.1.21IP Addr: 10.0.21.1VoiceGatewayHDIA Netmodel—IP Addresses and Netmasks&KDSWHU9RLFHRYHU'6/