D-Link DWS-4026 [211/741] Vlan configuration

ConfiguringIGMPSnooping

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

November2011 Page211

D‐LinkUWSUserManual

VLANConfiguration

UsetheIGMPSnoopingVLANConfigurationpagetoconfigureIGMPsnoopingsettingsforVLANsonthe

system.

ToaccesstheIGMPSnoopingVLANConfigurationpage,clickLAN>L2Features >IGMPSnooping>VLAN

Configurationinthenavigationtree.

Figure122:IGMPSnoopingVLANConfiguration

Table104:IGMPSnoopingVLANConfigurationFields

Field Description

VLANID Fromthedrop‐downmenu,selecttheVLANIDoftheVLANtomodify,orselect

NewEntrytoconfiguresettingsforaVLANthatdoesnothaveIGMPSnooping

enabled.

AdminMode Enableistheonlyavailableoptionfromthedrop‐downmenu.Todisablethe

IGMPsnoopingadminmo

deontheVLAN,selecttheVLANfromtheVLANID

fieldandclickDelete.

FastLeaveAdminMode Enablingfast‐leaveallowstheswitchtoimmediatelyremovethelayer2LAN

interfacefromitsforwardingtableentryuponreceivinganIGMPleave

messageforthatmulticastgroupwithoutfirstsending outMA

C‐basedgeneral

queriestotheinterface.

Youshouldenablefast‐leaveadminmodeonlyonVLANswhereonlyonehost

isconnectedtoeachlayer2LANport.Thispreventstheinadvertentdropping

oftheotherhoststhatwereconnectedtothesamelayer2LANportbutwere

illinterestedinreceivingmulticasttrafficdirectedtothatgroup.Also,fast‐

leaveprocessingissupportedonlywithIGMPversion2host s.

GroupMembershipInterval TheGroupMembershipIntervaltimeistheamountoftimeinsecondsthata

switchwaitsforareportfromaparticulargrouponaparticularinterface

bef

oredeletingtheinterfacefromtheentry.Thisvaluemustbegreaterthan

theIGMPv3MaximumResponsetimevalue.Therangeis2to3600seconds.

MaximumResponseTime Entertheamountoftimeinsecondsthataswitchwillwaitaftersendinga

queryonaninterfacebecauseitdidno

treceiveareportforaparticulargroup

inthatinterface.ThisvaluemustbelessthantheGroupMembershipInterval

timevalue.Therangeis1to25seconds.