Contents
Figures ........................... xi
Tables ...........................xiii
Notices ...........................xv
Notice to Users of Online Versions of This Book...........xvii
Trademarks .........................xix
xxi
About the Software .......................xxi
Conventions Used in This Manual .................xxii
IBM 2210 Nways Multiprotocol Router Publications ...........xxii
Summary of Changes for the IBM 2210 Software Library .........xxiv
Editorial Changes ......................xxvi
Getting Help .........................xxvi
Exiting a Lower Level Environment .................xxvii
Chapter 1. APPN ....................... 1
What is APPN? ........................ 1
Peer-to-Peer Communications .................. 1
APPN Node Types ...................... 1
What APPN FunctionsAre Implemented on the Router? ........ 3
APPN Network Node Optional Features ............... 6
High-Performance Routing ................... 6
Dependent LU Requester (DLUR) ................ 9
APPN Connection Network ...................12
Branch Extender .......................13
Extended Border Nodes ....................14
Branch Extender vs. Extended Border Node.............16
Managing a Network Node ...................17
Entry Point Capabilities for APPN-relatedAlerts ........... 17
SNMP Capabilities for APPN MIBs ................19
TopologyDatabase Garbage Collection .............. 19
Configurable Held Alert Queue..................19
Implicit Focal Point ...................... 19
Dynamic Definition of Dependent LUs (DDDLU) ...........20
TN3270E Server .......................20
Support for Subarea SNA Connections from the TN3270E Server to the Host 23
Enterprise Extender Support for HPR over IP ............25
Supported DLCs ........................25
Router Configuration Process ...................25
Configuration Changes That Require the APPN Function to Restart ....26
Configuration Requirements for APPN ...............26
Configuring the Router as an APPN Network Node ..........26
Configuring Branch Extender ..................30
Configuring Extended Border Nodes................31
High-Performance Routing ...................36
DLUR ...........................36
Configuring Focal Points ....................36
Configuring Held Alert Queue Size ................36
Defining Transmission Group (TG) Characteristics ..........36
Calculating APPN Routes Using TG Characteristics ..........37
© Copyright IBM Corp. 1994, 1998 iii