Overview of IBM Networking
SNA Switching Services
SNA Switching Services
Note SNA Switching Services functionality supersedes all functionality previously available in the APPN feature in the Cisco IOS software. SNASw configuration will not accept the previous APPN configuration commands. Previous APPN users should use this chapter to configure APPN functionality using the new SNASw commands.
SNASw provides an easier way to design and implement networks with SNA routing requirements. Previously, this network design was accomplished using APPN with full network node (NN) support in the Cisco router. This type of support provided the SNA routing functionality needed, but was inconsistent with the trends in Enterprise networks today. The corporate intranet is replacing the SNA WAN. Enterprises are replacing their traditional SNA network with an IP infrastructure that supports traffic from a variety of clients, using a variety of protocols, requiring access to applications on a variety of platforms, including SNA applications on Enterprise servers.
While SNA routing is still required when multiple servers must be accessed, the number of nodes required to perform this function is decreasing as the IP infrastructure grows and as the amount of native SNA traffic in the network decreases.
SNASw enables an enterprise to develop their IP infrastructure, while meeting SNA routing requirements.
The number of NNs in the network and the amount of broadcast traffic are reduced. Configuration is simplified, and SNA data traffic can be transported within the IP infrastructure. The following features provide this functionality:
•HPR Capable SNA Routing Services
•Branch Extender
•Enterprise Extender (HPR/IP)
•Usability Features
•Management Enhancements
•LAN and
Benefits of SNASw
SNASw provides the following benefits:
•Scalable APPN Networks
•IP Infrastructure Support
•Reduced Configuration Requirements
•Network Design Simplicity
•Improved Availability
•Increased Management Capabilities
•Architectural Compliance
Cisco IOS Bridging and IBM Networking Configuration Guide
