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Enterasys Networks XSR CLI Router User Manual

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Frame Relay Map Class Commands

9-96 Configuring Frame Relay

Mode

VirtualCircuitconfiguration:XSR(config-fr-dlci)#

Example

ThefirstthreecommandsinthefollowingexamplesetupSerialsub‐interface1/0.1with

associatedDLCI16.ThelasttwocommandsdefinemapclassHello.

XSR(config)#interface serial 1/0.1 point-to-point

XSR(config-if<S1/0>)#interface serial 1/0.1 point-to-point

XSR(config-subif)#frame-relay interface-dlci 16

XSR(config-fr-dlci)#class Hello

XSR(config)#map-class frame-relay Hello

XSR(config-map-class<Hello>)#frame-relay cir out 128000

frame-relay adaptive-shaping

Thiscommandenablesandselectsthemechanismtotriggeradaptiveshaping,thedynamic

impositionoftrafficshapingparameters(CIR ,Bc,Be)basedonexternalfeedbackindicating

upstreamcongestionconditions.

FrameRelayswitchesuseBECN(BackEndCongestionNotification)toindicatecongestionand

throttletheDTEtrafficrate.

Syntax

frame-relay adaptive-shaping

Syntax of the “no” Form

Thenocommanddisablesadaptiveshaping:

no frame-relay adaptive-shaping

Mode

MapClassconfiguration:XSR(config-map-class)#

Default

Disabled

Example

ThisexamplesetsFrameRelaymap‐classnormlinkwithtrafficshaping:

XSR(config)#map-class frame-relay normlink

XSR(config-map-class)#frame-relay adaptive-shaping

frame-relay bc

ThiscommandspecifiestheoutgoingCommittedburstsize(Bc)foraFrameRelaymap‐class.

Committedburstisspecifiedinbits,butanimplicittimefactorisderivedfromthesampling

interval(Tc)ontheswitch,whichisdefinedastheburstsizedividedbytheCommitted

InformationRate(CIR).This

isexpressedintheformula:Tc=Bc/CIR.Formoreinformation,refer

to“frame‐relaycir”onpage 98.

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