
117021-A Rev. A 2-1
Chapter 2
Configuring Synchronous Services
This chapter describes how to edit line services for synchronous WAN circuits,
including parameters for the Link Access Procedure Balanced (LAPB) Protocol.
Topic in this chapter include
• About Synchronous Services
• Editing Synchronous Line Parameters
• Setting the IFTF Pattern
About Synchronous Services
Each synchronous interface
• Connects a Bay Networks router or switch to data communications equipment
(DCE) devices, such as DSUs, CSUs, and modems.
• Supports a range of physical connections, including V.35, X.21, RS-232, and
RS-449/422 balanced.
• Supports both leased and dial-up circuits. Refer to Configuring Dial Services
for information about configuring dial-up circuits.
• Supports many WAN software services, including PPP, X.25, Frame Relay,
SMDS, HDLC encapsulation, and ATM DXI.
• Operates from 1200 b/s to a maximum of 2.048 Mb/s, full-duplex.
You can configure synchronous interfaces to integrate IBM SDLC traffic into an
internetwork. Traffic is integrated by connecting local or remote IBM equipment
directly to the synchronous interface and configuring either DLSw for SDLC or
Transparent Sync Pass-Thru features.
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