D-Link DWS-4026 [319/741] Virtual router redundancy protocol vrrp

VirtualRouterRedundancyProtocol(VRRP)

D-Link UnifiedWiredandWirelessAccessSystem

November2011 Page319

D‐LinkUWSUserManual

VirtualRouterRedundancyProtocol(VRRP)

TheVirtualRouterRedundancyprotocolisdesignedtohandledefaultrouterfailuresbyprovidingaschemeto

dynamicallyelectabackuprouter.Thedrivingforcewastominimize“blackhole”periodsduetothefailureof

thedefaultgatewayrouterduringwhichalltrafficdirectedtowardsitislostuntilthefa

ilureisdetected.Though

staticconfigurationofdefaultroutesispopular,suchanapproachissusceptibletoasinglepointoffailurewhen

thedefaultrouterfails.VRRPadvocatestheconceptofa“virtualrouter”associatedwithoneormoreIP

Addressesthatserveasdefaultgateways.IntheeventthattheVR

RPRoutercontrollingtheseIPAddresses

(formallyknownastheMaster)fails,thegroupofIPAddressesandthedefaultforwardingroleistakenover

byaBackupVRRPRouter.

VRRPConfiguration

UsetheVRRPConfigurationpagetoenableordisabletheadministrativestatusofavirtualrouter.

Todisplaythepage,clickLAN>L3Features>VRRP>VRRPConfigurationinthenavigationtree.

Figure211:VRRPConfiguration

•Ifyouchangetheadministrativemode,clickSubmittoapplythechangestothesys

tem.

Table190:VRRPConfiguration

Field Description

AdminMode ThissetstheadministrativestatusofVRRPintheroutertoactiveorinactive.

SelectEnableorDisablefromthedropdownmenu.ThedefaultisDisable.