Page 129 - 5G Basics - Core Network Aspects

Core network aspects 1

Figure 2 – An example of LINP federation with a LINP exchanger's federation functions

A network-to-network interface (NNI) reference point is specified on each side of the LINP exchanger.
Federation functions are recommended to allow the use of different independent protocols at the NNI and
VMI reference points between the LINP exchanger and each administrative domain. This is illustrated in
Figure 2 where NNI' and VMI' notations are used to represent that the protocol used at the NNI (or VMI)
reference point could be different from that used in the NNI' (or VMI') reference point.

6.2 LINP federation without LINP exchangers

LINP federation may be completed without requiring help from the LINP exchanger and its federation
functions [b-GENI Architecture]. Figure 3 shows an example of LINP federation where two LINPs from two
different administrative domains are federated with no LINP exchanger involved. In this example, an LINP
operator uses two LINP management functions that individually reside in the two different administrative
domains. The two LINPs and the constituent virtual resources are coordinated to ensure the connectivity.
Once the LINP federation is established, a NNI reference point and a VMI reference point are specified
between the administrative domains.

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