IBM SC30-3681-08 Chapter 28. Using XTP

Chapter 28. Using XTP
This chapter describes the X.25 Transport Protocol (XTP) for transporting X.25
traffic over TCP/IP.Included are the following sections:
v“The X.25 Transport Protocol”
v“DTE Address Wildcards” on page 363
v“XTP Backup Peer Function” on page364
v“Local XTP” on page 365
v“XTP and Closed User Groups” on page365
v“Configuring XTP” on page 366
v“Configuration Procedures” on page 366
The X.25 Transport Protocol
X.25 Transport Protocol (XTP) provides you with the services of a “protocol
forwarder.”A protocol forwarder is the focal point for inbound and outbound protocol
packet processing. Forwarders receive packets on one network interface and send
them to another interface.
XTP is designed to work with X.25 devices that are situated at multiple remote
sites. In such environments, XTP can eliminate the use of X.25 packet-switched
networks for communicating with servers at one or more centralized locations.
Toenable this, you use routers at the server and remote locations to encapsulate
the data and deliver the X.25 packets between the clients and server via TCP/IP.
Figure 19on page 362 illustrates a network configuration before and after using
XTP.
© Copyright IBM Corp. 1994, 1998 361