Chapter 7 Configuring Frame Relay; Introduction - Cabletron Systems Netlink FRX4000 User Manual

Introduction

Frame relay ports in the FRX4000 and FRX6000 are used to carry frame relay traffic,
as well as other protocols encapsulated in frame relay (per RFC 1490, via logical X.25
ports over frame relay). A frame relay port can act as physical DCE (non-T1/E1 port
only), connecting to end-user devices, or DTE, connecting to a network or frame relay
PVC.
Frame relay support includes:
RFC 1490 for HDLC, IP, IPX over frame relay
Line speeds up to 2.048 Mbps
LMI, Annex D link management
Annex F segmentation and re-assembly
Bandwidth allocation
Connection prioritization
Incoming and outgoing rate control (CIR)
Virtual circuit backup for single or multiple PVCs/DLCIs, including bandwidth
allocation on backup circuits
A frame relay port can contain multiple logical ports or channels.
Port Type Maximum Logical Ports/Channels
T1 24 channels per port
E1 30 channels per port
Other 56 logical ports in FRX4000, 56 per RLP in FRX6000. All 56
logical ports can reside on one physical port, or be spread over several
physical ports
Configuring Frame Relay
Chapter 7