Enterprise Extender used with the APPN extended border node function can replace SNA Network Interconnection (SNI) function in a way that does not require SNA legacy hardware, such as the 3745. Figure 1 shows how EE and EBN work together. Because EE with EBN requires that both endpoints be migrated from SNI, using EE with EBN as an SNI replacement technology requires cooperative changes with other partner companies.

Figure 1. How EE and EBN work together