Specifications

Configuring VLANs
March 15, 2011 Page 9 of 20
Figure 3 Example of VLAN Propagation Using GVRP
AdministrativelyconfiguringaVLANonan802.1QswitchcreatesastaticVLANentrythatwill
alwaysremainregisteredandwillnottimeout.However,GVRP‐createddynamicentrieswill
timeout,andtheirregistrationswillberemovedfromthememberlistiftheendstationis
removed.Thisensuresthat,
ifswitchesaredisconnectedorifendstationsareremoved,the
registeredinformationremainsaccurate.
TheendresultofGVRPdynamicVLANconfigurationisthateachport’segresslistisupdated
withinformationaboutVLANsthatresideonthatport,eveniftheactualstationontheVLANis
severalhops
away.
Configuring VLANs
Onceyouhaveplannedyourimplementationstrategyasdescribedin“PreparingforVLAN
Configuration”onpage 3,youcanbeginconfiguringVLANsasdescribedinthissection.The
followinginformationforconfiguringVLANsonanEnterasysswitchwillbecovered:
• PlatformSpecificDifferences(page10)
• DefaultSettings(page11)
• ConfiguringStatic
VLANs(page12)
• CreatingaSecureManagementVLAN(page14)
• ConfiguringDynamicVLANs(page15)
• ConfiguringProtocol‐BasedVLANClassification(page16)
Note: If a port is set to “forbidden” for the egress list of a VLAN, then the VLAN’s egress list will not
be dynamically updated with that port.
End
Station A
Switch 4
Switch 5
= Port registered as a member of VLAN Blue
= Port declaring VLAN Blue
D
R
1
123
D
R
D
1
R
R
312
D
R
D
1
R
Switch 1 Switch 2
Switch 3