Enterasys Matrix DFE-Gold Series - Enabling;Disabling GVRP; Purpose

Enabling/Disabling GVRP set vlan dynamicegress
7-22 802.1Q VLAN Configuration
Enabling/Disabling GVRP
Purpose
TodynamicallycreateVLANsacrossaswitchednetwork.TheGVRP(GARPVLANRegistration
Protocol)commandsetisusedtodisplayGVRPconfigurationinformation,thecurrentglobal
GVRPstatesetting,individualportsettings(enableordisable)andtimersettings.Bydefault,
GVRPisenabledonallports,andgloballyonthedevice.

GARP VLAN Registration Protocol (GVRP) Operation
Thefollowingsectionsdescribethedeviceoperationwhenitsportsareoperatingunderthe
GenericAttributeRegistrationProtocol(GARP)application–GARPVLAN RegistrationProtocol
(GVRP).
Overview
ThepurposeofGVRPistodynamicallycreateVLANsacrossaswitchednetwork.WhenaVLAN
isdeclared,theinformationistransmittedoutGVRPconfiguredportsonthedeviceinaGARP
formattedframeusingtheGVRPmulticastMACaddress.Aswitch/routerthatreceivesthisframe,
examinestheframe,andextracts
theVLANIDs.GVRPthencreatestheVLANsandaddsthe
receivingporttoitstaggedmemberlistfortheextractedVLANID(s).Theinformationisthen
transmittedouttheotherGVRPconfiguredportsofthedevice.Figure 7‐1showsanexampleof
howVLANbluefromendstation
Awouldbepropagatedacrossaswitch/routernetwork.
How It Works
InFigure 7‐1,Device4,port1isregisteredasbeingamemberofVLANBlueandthendeclares
thisfactoutallitsports(2and3)toDevice1andDevice 2.Thesetwodevicesregisterthisinthe
portegresslistsoftheports(Device1,port1
andDevice2,port1)thatreceivedtheframeswith
theinformation.Device2,whichisconnectedtoDevice3andDevice5declaresthesame
informationtothosetwodevicesandtheportegresslistofeachportisupdatedwiththenew
information,accordingly.