Cisco WS C4224V 8FXS - 200Mbps Ethernet Switch Software Configuration Manual page 257

Chapter 12 Configuring Other Routing Protocols
Figure 12-1 The Cisco Four-Phase SNA-to-IP Integration Model
Phase 1
SNA/APPN
SNA centric
Phase 3
SNA
IP
IP client
OL-2031-02
Network
Appl
The phases can be differentiated by the protocol that runs in each of three key
elements in the network: the mainframe/midrange computer, the network
backbone, and the desktop. This section describes the characteristics of each of
the phases along with the problems solved, types of products and technologies
implemented, and challenges.
Catalyst 4224 Access Gateway Switch Software Configuration Guide
Phase 2
SNA
IP
SNA
IP transport
Phase 4
IP
IP centric
IBM SNA
12-5