Zhone Technologies 600, 900, 800 manual Unnumbered IP Interface, Unnumbered Frame Relay IP Interface

Fully Meshed vs. Partially Meshed IPR Card

8.5.4Unnumbered IP Interface

When using a point-to-point Frame Relay IP interface, it is sometimes very useful for a user not to assign an IP address to this Frame Relay interface, but rather to use an IP address of another interface (e.g. Ethernet) in order to conserve an IP address and reduce the addressing burden that might otherwise occur. Unnumbered interfaces give the customer an opportunity to have just one IP address per whole IPR card, and use this address as a home IP address for all the attached WAN interfaces. IPR can be used as any or a combination of the settings shown in the previous sections described above. The reason for this is due to the fact that an IPR, the customer first defines a logical IP interface, which includes IPRs address on this IP interface and then can plug-and-play specified IP interfaces to any physical interface (Ethernet and/or PVCs). Figure 8-8below shows an Unnumbered Interface.

Ethernet IP Net

199.2.2.0

199.1.1.113

Frame Relay

Network

Router

Un-numbered IP Interface (Uses Ethernet's IP address of 199.1.1.113)

199.1.1.1

Router

Ethernet IP Net

199.2.2.0

Figure 8-8. Unnumbered Frame Relay IP Interface

8-10 Server Cards