2. Routing

The up to 42 deep hierarchy of routing levels built into IPv9 must have been one of the key features for its wide deployment. The ability to assign a whole network, or group of networks to an electronic component must be seen as one of the reasons for its takeup. The use of the Compact Disk Hologram units is typical of the usage. They typically have a level 37 network number assigned to each logical part, and a level 36 network number assigned to the whole device. This allows the CDH management protocol to control the unit as a whole, and the high-street vendor to do remote diagnostics on discreet elements of the device. This still allows sub-chip routing to be done using the 38th level addressing to download new nanocode. As yet, no requirement has been found for levels 40-42, with level 39 still being used for experimental interrogation of atomic structure of components where required.