Configuring multilink frame relay, Overview, Bundle and bundle link – H3C Technologies H3C SR8800 User Manual

Page 73: Mfr interface and physical interface

Configuring multilink frame relay

Overview

Multilink frame relay (MFR) is a cost effective bandwidth solution for frame relay users. Based on the

FRF.16 protocol of the frame relay forum, it implements the MFR function on DTE/DCE interfaces.
MFR function provides a kind of logical interface, MFR interface. The MFR interface is composed of

multiple frame relay physical links bound together, and you can configure subinterfaces for the MFR

interface. The MFR interface provides high-speed and broadband links on frame relay networks.
To maximize the bandwidth of bundled interface, bundle physical interfaces of the same rate for the
same MFR interface when you configure the MFR interface so as to reduce management cost.

NOTE:
•

Only PIC-ET32G2L sub-cards support MFR.

•

An MFR interface contains up to 16 physical interfaces, but only 12 of them can stay up at the same time.

•

To make sure that a physical interface can join the bundle, make sure that the number of time slots
allocated for each physical interface in a bundle is the same.

Bundle and bundle link

Bundle and bundle link are two basic concepts related to MFR.
One MFR interface corresponds to one bundle, which may contain multiple bundle links. One bundle

link corresponds to one physical interface. A bundle manages its bundle links. The interrelationship
between bundle and bundle link is illustrated in

Figure 17

Figure 17 Illustration of bundle and bundle links

For the actual physical layer, a bundle link is visible. For the actual data link layer, a bundle is visible.

MFR interface and physical interface

An MFR interface is a kind of logic interface. Multiple physical interfaces can be bundled into one MFR

interface. One MFR interface corresponds to one bundle and one physical interface corresponds to one
bundle link. The configuration on a bundle and bundle links is actually configuration on an MFR

interface and physical interfaces.
The function and configuration of the MFR interface is the same with that on the FR interface in common

sense. Like the FR interface, the MFR interface supports DTE and DCE interface types as well as QoS
queue mechanism. After physical interfaces are bundled into an MFR interface, their original network

Bundle

Bundle Link

This manual is related to the following products:

H3C SR6600-X H3C SR6600 H3C MSR 5600 H3C MSR 50 H3C MSR 3600 H3C MSR 30 H3C MSR 2600 H3C MSR 20-2X[40] H3C MSR 20-1X H3C MSR 930 H3C MSR 900 H3C WX6000 Series Access Controllers H3C WX5000 Series Access Controllers H3C WX3000 Series Unified Switches H3C LSWM1WCM10 Access Controller Module H3C LSWM1WCM20 Access Controller Module H3C LSQM1WCMB0 Access Controller Module H3C LSRM1WCM2A1 Access Controller Module H3C LSBM1WCM2A0 Access Controller Module