Configuring Frame Relay; Overview; Framing - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - LINK LAYER CONFIGURATION GUIDE 2010-10-13 Configuration Manual

CHAPTER 2

Configuring Frame Relay

Overview

Framing

Copyright © 2010, Juniper Networks, Inc.
This chapter describes how to configure a Frame Relay interface on E Series routers.
This chapter contains the following sections:
Overview on page 105
Platform Considerations on page 107
References on page 108
Before You Configure Frame Relay on page 108
Configuring Frame Relay on page 108
End-to-End Fragmentation and Reassembly on page 116
Monitoring Frame Relay on page 120
Frame Relay is a public, connection-oriented packet service based on the core aspects
of the Integrated Services Digital Network (ISDN). Frame Relay eliminates all processing
at the network layer and greatly restricts data-link layer processing. Such simplified
processing is possible because of the availability of virtually error-free physical connections
and the presence of intelligent protocols at the end-user site, which can detect and
retransmit faulty or discarded packets.
Frame Relay shifts responsibility for error recovery and flow control to the end user,
thereby reducing protocol complexity and allowing high-speed packet delivery with low
transit delay.
For a list of the modules on which you can configure Frame Relay, see ERX Module Guide,
Appendix A, Module Protocol Support.
E Series routers support the following framing features:
HDLC for data-link framing
2-byte addresses only
105