To Next Page

To Previous Page

Configuring DVMRP ip dvmrp

21-52 Routing Protocol Configuration

Configuring DVMRP

Purpose

ToenableandconfiguretheDistanceVectorMulticastRoutingProtocol(DVMRP)onaninterface.

DVMRProutesmulticasttrafficusingatechniqueknownasReversePathForwarding.Whena

routerreceivesapacket,itfloodsthepacketoutofallpathsexcepttheonethatleadsbacktothe

packet’ssource.Doing

soallowsadatastreamtoreachallVLANs(possiblymultipletimes).Ifa 

routerisattachedtoasetofVLANsthatdonotwanttoreceivefromaparticularmulticastgroup,

theroutercansenda“prune”messagebackupthedistributiontreetostopsubsequentpackets

from

travelingwheretherearenomembers.DVMRPwillperiodicallyrefloodinordertoreach

anynewhoststhatwanttoreceivefromaparticulargroup.

Commands

ip dvmrp

UsethiscommandtoenableordisableDVMRPonaninterface.

Syntax

ip dvmrp

no ip dvmrp

Parameters

None.

Defaults

None.

Mode

Routercommand,Interfaceconfiguration:Matrix>Router(config‐if(Vlan1))#

Usage

IGMPmustbeenabledonallVLANsrunningDVMRP.Todothis,usethesetigmpenable

commandasdescribedin“setigmpenable”onpage 9‐3.ItisalsorecommendedthatIGMP

queryingbeenabledonallVLANsrunningDVMRP.Todothis,usethesetigmpquery‐enable



commandasdescribedin“setigmpquery‐enable”onpage 9‐6.

Note: IGMP must be enabled on all VLANs running DVMRP. To do this, use the set igmp enable

command as described in “set igmp enable” on page 9-3. It is also recommended that IGMP

querying be enabled on all VLANs running DVMRP. To do this, use the set igmp query-enable

command as described in “set igmp query-enable” on page 9-6.

For information about... Refer to page...

ip dvmrp 21-52

ip dvmrp metric 21-53

show ip dvmrp route 21-53

Enterasys Matrix DFE-Gold Series User Manual

Questions and Answers: