The ppnnet network is a special-purpose campus network that is not attached to the rest of the campus network. Previously, OIT DNS, DHCP, BootP, and NTP services were not available to devices attached to ppnnet. All these services are now available on ppnnet.
Previously, devices attached to ppnnet had to be manually configured with their IP addresses and netmasks. Such devices may still be configured this way, however, now customers may instead choose to configure the device to use DHCP or BootP to learn that information. OIT DHCP and BootP Services will provide the devices with their IP addresses, netmasks, and other information.
A new set of DNS (Domain Name Service) servers have been installed to support devices attached to ppnnet. Devices attached to ppnnet that are configured to use DHCP or BootP to learn their network configuration will learn about these new DNS servers automatically. Manually configured devices attached to ppnnet may be manually configured to use these new DNS servers; see OIT Domain Name (DNS) Service. (Because devices attached to ppnnet can communicate only with other devices attached to that network, the ppnnet DNS service attempts to limit the information they provide to only include IP address information relevant for ppnnet.)
A new set of NTP (Network Time Protocol) servers have been installed to support devices attached to ppnnet. Devices attached to ppnnet that are configured to use DHCP or BootP to learn their network configuration will learn about these new NTP servers automatically. Manually configured devices attached to ppnnet, and those that ignore the NTP servers learned via DHCP or BootP may be manually configured to use these new NTP servers; see Network Time Protocol (NTP) Service.
Note that OIT Mobile IP Service remains unavailable to devices visiting ppnnet.
Any device which is multihomed on ppnnet and another campus network should not be reconfigured to use the new ppnnet DNS servers (or NTP) servers. The ppnnet DNS servers provide a limited view of DNS, for example, by trying to exclude information other than ppnnet IP addresses. This limited DNS service would not be appropriate for a device that can communicate with the rest of the campus network (or Internet).
Therefore, any device which is multihomed on ppnnet and another campus network should remain configured to use the campus DNS (and NTP) servers, not the ppnnet ones. Based upon that, such a device should not be configured to use DHCP or BootP on its ppnnet interface, as that could result in the device using the ppnnet DNS (and NTP) servers.